Thematic catalog of blog reviews v1.0, updated 27.07.2023
I decided to do a bit of tidying up on the blog, check whether some product links are still current, and generally get things in order. There may be further changes as well.
While doing all this, I noticed that some really interesting and still relevant reviews had been buried under others that are less on-topic for now. So I wanted to put together a guide, table of contents, or catalog—whatever you prefer. I’ve moved all my reviews, some articles, and a selection of the most useful reviews by other authors into this catalog.
The catalog structure may change a little (quite possibly, in fact). For now, I’ve grouped things by topic and date, from newest to oldest, but I’ll probably split some sections further. Also, since some reviews cover how to use the product as well as the theory behind it, they’ll be listed under DIY or Learn, as appropriate.
I won’t add detailed explanations for now. Writing up more than 700 comments would take a lot of time and effort, though I may add notes to some entries, since review titles aren’t always very informative.
I’ll start, of course, with power supplies.
Baseus CCCP30UE 2A1C 30 W power supply (charger)
24 V, 10 A power supply—how can this happen??
MP-U200S48 power supply, 48 V, 4 A
Repairing a Panasonic air conditioner power supply; review added
Repair and review of the Bluetti EB55 power station
A 500 W charger—so that's what you are, Abibas
Repairing two PSU60B power supplies from a mini PBX
A simple repair of a small power supply, plus a little theory
Another power supply repair: a case where it's worth doing
A relatively simple repair of a pair of power supplies
Repairing a SVEN SB-550 power supply and replacing the PWM controller
MeanWell LRS-200-12: review and modifications
MeanWell NET-35, or a riddle from the manufacturer
Reviewing and converting a Meanwell LRS-150-12 power supply into a UPS
New version of the PSU-UPS adapter board: prototype
Meanwell AD-55A, a power supply with UPS functionality—or how to turn a UPS into a UPS
19 V, 3.42 A power supply: cheap and dreary
Gospower G0966A-540-0278 power supply, 54 V 2.78 A (64 V 6 A)
MeanWell EPP-500-54 power supply
Compact OVEN BP60A-S power supply for automation cabinets
60 V, 5 A power supply and a few notes on modifying it
Sanmim SM-PLG06A power supplies: when power isn't everything
YS-65SCB power supply, 24 V 65 W
A not-quite-ordinary 25/5 V power supply
YS-U50SL power supply, 24 V, 2.3 A
UM-U120S power supply, 12 V, 10 A
MeanWell HDR-15-24 power supply
24 V, 6 A power supply from Geekcreit
Novatek-Electro PS-220/24-1.5 industrial power supply
Low-profile MeanWell LRS-350-48 power supply
Used VeriFone 9V (9.3V)-4A power supply. Now model SM09003A.
VeriFone 9V-4A power supply. Now the AU1370933g model.
VeriFone 9V-4A power supply (model Au-7992n
Low-profile MeanWell LRS-100-48 power supply
LRC-60-1050 and LRC-60-1400 LED power supplies (drivers) for LEDs up to 60 W
A pair of 60 W power supplies, rated for 12 and 24 V
NVVV S-800-70 power supply for the RD6012 converter
Modiary MDA238 42 V 2 A charger for 10S lithium battery packs
DIY MeanWell PSC-160A-C: fixing its shortcomings, modifications, and an update to the review
MeanWell PSC-160A-C, 160 W power supply with UPS function
Sanmim GPA40B power supply, 12 V 40 W
Used 12 V 5 A power supplies
Geekcreit 36 V 180 W power supply, another entry in the “people’s” series
24 V 8–10 A power supply
DIY MeanWell SP-320-5 power supply, 5 V 55 A
ACCORD ACC-1000W-80G power supply
68 V 600 W power supply, and a little more about the RD6006 converter
Low-profile Meanwell LRS-350-24 power supply
TMP-30124C power supply by Traco Power
460 W in a tiny box? No problem: a compact 12 V power supply from HP
Another low-profile power supply, 12 V 20 A
Low-profile S-120-24 power supply, 24 V 120 W
SANMIM GFA15A-5 power supply, 5 V 15 W
SANMIM GPT70A-12 power supply, 70 W 12 V
Low-profile SANMIM GFA20A-12 power supply, 12 V 20 W
Compact built-in PLF12A-12 power supply, 12 V 1 A
A brief look at a small, low-power supply
24 V 20 A power supply
48 V - 12.5 A power supply
48 V 125 W power supply: inexpensive, but very good
24 V 300 W power supply: competitor or companion to the “people’s” 24/100 supply ?
24 V 3 A power supply
Compact Hi-Link HLK-PM12 power supply
Compact power supply with power factor correction and a claimed output of 400 W
12 V 10 A board (claimed)
Mean Well IRM-60-24ST power supply, sixth of six
Mean Well HDR-100-12N power supply, fifth of six
Mean Well HDR-60-12 power supply, fourth of six
Mean Well EPS-65S-24 power supply, third of six
500 W switching power supply for audio amplifiers
EPP-100-12 power supply, second of six
MeanWell SDR-120-24, first of six
RPS-120-27 power supply made by Mean Well
24 V 1.2 (2) A power supplies
Another power supply power supplies, now 48 V 0.5 (1) A
12 V 0.5 (1) A power supplies
12 V 3 A power supply for access control systems
Inexpensive 12.6 V 3 A charger
Another charger for assembling 3S Li-Ion battery packs
12.6 V 3 A charger, or continuing the discussion about modifying a cordless drill battery
Another power supply, this time 12 V 50 A or 600 W
Another power supply, this time 24 V, 20 A and 480 W
Another power supply: 12 V, 30 A and 360 W
A small uninterruptible power supply for access control systems
12 V, 20 A and 240 W power supply with passive cooling
Power supplies, small and very small
48 V, 5 A and 240 W, or a power supply that managed to surprise me
36 V, 10 A and 360 W, or more on how power supplies work + a small bonus
Learn 5 V, 7.2 A and 36 W, or a short guide to choosing the right power supply.
S-180-12 180W 12V / 15A power supply in an unusual form factor
24 V 5 A power supply, plus an extra 1 A as a bonus :)
24 V 100 W power supply with a pretty good result
5 V 2 A power supply with a microUSB plug
Another 12 V power supply, this time rated for 1 A.
12 V 6–8 A power supply that was a pleasant surprise.
DIY A dual-voltage power supply: it can be useful sometimes, but unfortunately... + Modification.
DIY 12 V 5 A power supply, or how it could have been made.
12 V 180 W power supply.
DIY 12 V 3 A power supply and a small upgrade to a UPS
DIY 20 W LED driver, or modifying a light fixture
Standard voltage converters, i.e. without any digital control, QC/PD or other "features".
Step-up voltage converter rated for up to 400 W
Step-down voltage converter with output current up to 10 (12) A
Powerful dual-channel DC-DC converter
Step-down voltage converter with output current up to 20 A
Compact, high-efficiency step-down converter based on the MP2225
5 V, 5 A converter based on the TPS40057. Small, inexpensive, and great.
A pair of small isolated voltage converters with bipolar outputs
Small 15 W isolated voltage converter
Small isolated voltage converters rated for up to 50 W
Compact, powerful isolated voltage converters
Powerful and unusual universal converter based on the LTC3780
DC-DC step-down module rated for 10 A
DIY Multichannel DC-DC converter
DIY Multichannel DC-DC converter: Pico PSU ATX and a little about how to use it
Learn DIY A pair of step-up converters and a small upgrade to SEPIC
Learn Universal voltage converter, or a few words about what SEPIC is
Learn DIY DC-DC converter, as sometimes happens.
Inexpensive and convenient DC-DC converter.
Adjustable power supplies and converters
New model of the RuiDeng RK6006 adjustable converter
RD6024 adjustable converter
RD6012P(W) hybrid adjustable voltage converter
XYH3606, a versatile adjustable converter with Wi-Fi and other goodies
RuiDeng RD6006P hybrid adjustable converter
WZ5005 adjustable voltage converter: could it really be an alternative to DPS converters?
Fnirsi DC-6006L adjustable voltage converter
RD6018, a new converter model from RuiDeng
RD6012(W) adjustable voltage converter, a new version from Rui Deng
DIY XYS3580 adjustable SEPIC voltage converter
XH-M403 adjustable voltage converter
New RD6006 (W) voltage converter module from Rui Deng
Versatile adjustable voltage converter powered by USB and supporting QC mode
Voltage converter + control module with an attractive design
DPX6012S, or a new addition to the world of adjustable power supply boards
DPH5005, an adjustable voltage converter with a universal input
DPS-5020 adjustable voltage converter and its enclosure
DIY Kit for building a 35 V, 5 A linear adjustable power supply
DPS8005 adjustable DC-DC converter + USB + Bluetooth
DIY Gandf digital linear power supply board, 50 V, 10 A
Power module for a 30 V, 10 A linear power supply
Kit for building a 60 V, 20 A linear adjustable power supply
CPS-6011 adjustable power supply, or another GOPHERT
DIY Adjustable power supply kit board, or a proper power supply should be heavy, part 2
DIY ZXY6020S, or the next chapter in the story of a homemade high-power bench power supply
GOPHERT CPS-3205 bench power supply, or that rare case....
DIY Adjustable power supply kit board, or a proper power supply should be heavy
DIY A simple adjustable DC-DC converter, or a DIY bench power supply V2.
DIY A decent ZXY6005S DC-DC module, or a DIY bench power supply.
Power supplies and converters with USB outputs, plus QC, PD, and even power bank mode.
Baseus 160W CCZX-160CX car charger
An interesting power bank based on the SW6208 chip for eight 18650 cells
Compact converter with QC support and two outputs
Choetech PD6008 power supply (charger) with up to 100 W output power
Choetech Q6006 power supply (charger) with 61 W PD support and GaN technology
CHOETECH Q4004 power supply (charger) with 60 W PD support
Choetech QC 18W power supply (charger) bought on sale
An interesting cable and cross-board for installing YZXstudio converter modules
ZC823 v13, an updated version of the multi-charger board
Two more multi-standard DC-DC voltage converter modules from YZXstudio
Small DC-DC converters with USB connectors
Three QC/PD multi-standard voltage converter boards
Compact voltage converter with Quick Charge support
5 V, 8 A voltage converter with four USB outputs
Cheap QC 3.0 charger module
Compact QC 3.0 charger / power supply
DC-DC converter with QC 3.0 support
AUKEY PA-T15 charging station with 5 USB ports and Quick Charge 3.0 support, plus a brief comparison with the AUKEY PA-T1 Quick Charge 2.0
BlitzWolf BW-S4 charger with a genuine 50 W output
Raxfly charger (power supply), 5 V with a claimed current of 7.2 A
A not-so-great USB charger (power supply)
DIY 5 V, 6 A charger with 6 ports and charging current display
More articles on power supplies and converters
DIY Air conditioner power supply, or the story of a repair
DIY Preparing power supplies for a multichannel battery tester
A couple of small 9/12 V and 5 V UPS units
Learn DIY How to turn a simple converter into a constant-current regulator
DIY A simple MILWAUKEE charger modification
A power supply: how not to build one
Learn DIY A simple repair of a UC2845-based power supply
Learn DIY Converting a cordless screwdriver to lithium, part two: charging it properly
Batteries.
Samsung INR21700-33J batteries, you won't find them cheaper
BAK N21700CG 5000mAh batteries from Nkon
LG INR21700-M50LT batteries from Nkon
Vapcell IFR32700 G62 batteries, take two
Vapcell F56 5600mAh batteries, almost top of the 21700 class
Vapcell N36 18650 3650mAh batteries
Vapcell T39 21700 3900mAh, just high-current batteries
Vapcell LG-INR21700H40B batteries with a capacity of 4000mAh
Vapcell A11 18350 1100mAh batteries bought locally
BL1860 battery for Makita tools
Makita tool batteries and charger
EVE IFR33140 15Ah batteries bought locally
Shadows of Forgotten Ancestors, or batteries from the past
Vapcell 18500 N24 2400mAh batteries
Vapcell 18650 F35 batteries with a claimed capacity of 3500mAh
Three models of prismatic LiFePO4 batteries from Nkon: a mini-review
More Vapcell LiFePO4 32700 batteries with a claimed capacity of 6200mAh
Vapcell F52 21700 5200mAh batteries
EagleTac 17650 1600mAh batteries from Nkon
No-name 18650 batteries with a capacity of 2600mAh
EVE INR18650-25P 2500mAh - 20A battery (sold under the TerraE brand)
Sanyo UR14500AC 740mAh batteries salvaged from equipment
Sanyo UR18500Y 1300mAh batteries salvaged from a battery pack
BAK H18650CC 2150mAh batteries
Battery for Kindle PaperWhite EY21
LiitoKala Lii-50A battery life test: 200 cycles
XG NCR21700 batteries
LiitoKala Lii-40E battery, 26700, 4000mAh
LiitoKala 26650-55A battery, 26650, 5000mAh
Liitokala Lii-51S battery, 26650, 20 A, 5100mAh
LiitoKala Lii-50A battery, 26650, 5000mAh
Vapcell T42 21700 4200mAh 35A batteries
Vapcell K29 18650 2900mAh 20A batteries
Vapcell ANR26650M1-B LiFePO4 batteries
Vapcell F32 and F34 batteries: review and comparison
Vapcell P2150A 21700 5000mAh, a little more than just a battery
Vapcell K31 18650 3150mAh 18A/35A batteries
Vapcell P50 21700 5000mAh 15A/25A batteries
Vapcell K40 21700 4000mAh 30A/45A batteries
Decent budget BAK N18650CK 3000mAh - 6.1A batteries
LiNiCoMnO2 CATL 3.7V 50Ah batteries
Vapcell T20 21700 2000mAh 40A/60A batteries
Vapcell INR18650 2000mAh 38A batteries: could these be the highest-current 18650s??
Li-NMC 26800 Yuliang 3.7 V 7000mAh multi-component batteries
Vapcell F14 batteries, 1400mAh and 3A in an 18350 size
Vapcell P30 batteries, 3000mAh with a current rating of up to 20A
Vapcell K54 batteries rated at 5400mAh and up to 15A
LG INR18650-MJ1 batteries from Vapcell
Vapcell K15 18500 1500mAh 15A batteries
Vapcell 14650 V11 1100mAh 6A batteries
LiFePO4 EVE Energy 3.2V 90Ah batteries
Protected Liitokala NCR18650B batteries rated at 3400mAh
A short test of a 66160-size LTO battery
Vapcell 21700 T50 batteries, 5Ah with a load current of up to 20/35A, or Samsung's new cell in different “clothing”?
LG 20650 HG6 batteries from VapCell
Samsung INR18650-25S batteries from VapCell
Life test of a 1500mAh 18650 LTO battery: 1200 cycles
VapCell 26650 batteries with a capacity of 4200mAh and a current rating of up to 32A
Samsung INR21700-48X batteries from VapCell
Vapcell Boston Power Swing 5300 batteries in an unusual form factor
Learn M18 battery for Milwaukee power tools
Samsung INR21700-50G batteries from VapCell
Murata US18650VC7 batteries from Vapcell
18650-size LTO batteries with a capacity of 1500mAh
LiitoKala LiFePO4 batteries rated at 30Ah
Samsung INR18650-25S batteries, or what's replacing the classic 25R
Vapcell batteries, part seven: protected 18650 cells with a load current of up to 15A
VapCell IFR10370 140mAh batteries, part six: 10370 size
VapCell INR26350 A20 2000mAh batteries, part five: 26350 size
Liitokala LiFePO4 batteries rated at 32Ah
LG HG2 batteries from a local store
Vapcell batteries, part five: 18650 size
BL1013 battery for Makita tools
Vapcell batteries, part four: 16340, 14500, and protected 18650 cells, plus a charger
Battery for the Teclast Tbook 10S tablet
Vapcell batteries in 16340, 18650, and 21700 sizes
HJ802540 battery: a short test with an unexpected result
Sanyo NCR18650GA 3500mAh: a new life test, or how to kill a battery quickly. Updated 20.06.2020
Lithium Werks (formerly A123 Systems) ANR26650M1-B 2500mAh batteries: it doesn't get any better?
JGNE 26650 LiFePO4 batteries with capacities of 2300, 3000, and 3600mAh
A pair of JGNE18650 LiFePO4 batteries, 1600 and 1800mAh
VapCell IFR32700 6500mAh 30A G65 batteries: big, high-capacity, high-current
VapCell IFR26650 2600mAh 3.2V 55A/75A batteries
VapCell G53 26650 5300mAh 20A batteries, maximum capacity at currents up to 20A
VapCell G45 21700 4500mAh 20A batteries
VapCell INR18500 2200mAh 4A L22 batteries
VapCell M11 18350 1100mAh 9A batteries
VapCell INR14500 1000mAh 10A H10, small but powerful
Learn CSB HRL-1234W-F2-FR battery pack, or thoughts on replacing them with LiFePO4
Learn Liitokala 32700 LiFePO4 and a comparison with similar VariCore batteries
VariCore 32700 LiFePO4 batteries and a few thoughts on replacing lead-acid batteries in a UPS
TrustFire 14500 batteries with a capacity of 900mAh
Basen BS217A battery, 4000mAh in a 21700 size
Basen BS26003 batteries, 4.5Ah in a 26650 size
Basen 18650 2500mAh 22A batteries
BASEN B30 18650 3000mAh batteries
BASEN 18650 3500mAh batteries, standard and protected
LG HG2 batteries and an interesting experiment
Samsung ICR18650-26F and ICR18650-26H batteries, plus a few notes on other similar models
More high-capacity batteries: Sanyo NCR18650GA
Sanyo NCR20700B, interesting 20700-size batteries
LG INR21700-M50T, high-capacity batteries in the 21700 format
LG INR18650-HG2L, “chocolate bars” in new clothes
Molicel INR21700-P42A, more batteries from E-One Moli Energy
Molicel INR18650-P28A batteries from E-One Moli Energy
Panasonic NCR18650G, really the highest-capacity 18650 battery?
Panasonic NCR18650BD batteries, Tesla in your pocket
LG INR18650MH1 batteries with a capacity of 3100mAh and a current rating of up to 10A
Red Sony/Murata US18650VTC6, “Red Heat”
Samsung INR18650-25R, a timeless classic
Sony/Murata US18650VTC4 batteries, “Die, but not today”
High-drain LG ICR18650-HB3 batteries
LG ICR18650-HE4 batteries
Samsung ICR18650-22P batteries
LiitoKala lii-35A-N, or what's on the other side of the barricades
High-drain Samsung INR21700-40T battery with a capacity of 4000mAh and a claimed current rating of 35A
LG INR18650-M36 batteries claim a record 3600mAh capacity—is that true??
High-capacity LG INR18650-MJ1 batteries and a somewhat unusual “test subject”
Murata US18650-VTC5D batteries, the highest-capacity high-drain cells
A couple more Murata US18650VTC6 cells and a comparison with the previous batteries
Genuine LG INR18650-HG2 batteries and my first experience buying from nkon
Yet more Liitokala NCR18650B 3400mAh batteries
Batteries: counterfeit or genuine? Here's how it happens
High-drain Samsung INR 18650-20S battery
A pair of nearly nameless Chinese protected batteries
Review and test of batteries from nkon.nl: Sony/Murata VTC6
Chinese battery cycle-life test, update 29.03: 450 cycles
Review and test of batteries from nkon.nl: Sony/Murata VTC5A
Review and test of batteries from nkon.nl: Samsung INR21700-50E
Review and test of batteries from nkon.nl: Samsung INR18650-35E
Review and test of batteries from nkon.nl: Samsung INR18650-30Q
Liitokala HG2 battery, or how Chinese sellers rip you off, part 2
More VTC6 batteries, this time with tabs
Testing INR18650-25R batteries from Ali after 3 years
Protected Liitokala 3400 mAh batteries, another batch
Another batch of batteries, this time counterfeit SONY VTC6s
18650 3400 mAh batteries
Batteries for Uniden radios: BP-38, BP-40
NCR18650B 3400 mAh from LiitoKala
LiitoKala Lii-40A 21700 4000mAh batteries
Soshine LiFePO4 batteries, or three plus one
Soshine 14500 Lifepo4 Battery Kit 700 mAh
Another batch of batteries: Samsung ICR18650-26HM
Sony VTC6 batteries, high-current test
Camera batteries: different, yet so alike
Popular Panasonic NCR18650B protected batteries
A few TrustFire 16340 batteries and testing them
TrustFire batteries, and more TrustFire: two TrustFire cells, sizes 14500 and 18350
Several different, yet identical, camera batteries
SANYO UR18650ZY
Another batch of Samsung batteries, this time protected ICR18650-32A cells
INR18650-25R test and the short story of an order
A quick look at a netbook battery, very brief
A bunch of assorted batteries for cameras and other useful devices :)
What awful 14500 and 10440 batteries
NB-4L and NB-7L batteries for Canon cameras
DIY TrustFire 14500 protected 900mAh batteries, part two: continuing the experiment.
Goonk is Goonk, or an intensive interrogation.
DIY TrustFire TF26650 5000mAh 3.7V: testing, a decent result, and a little DIY.
DIY 2200mAh 18650 Li-ion Battery for Power Tool: could be better.
TrustFire TF 16340 880 mAh, or when the result isn't what you expect.
TrustFire 18650 2400mAh: brief, but spot-on.
DIY TrustFire 14500 batteries and a little DIY.
DIY A pair of UltraFire TR17670 1800mAh 3.7V batteries and a little DIY.
Electrical is, you could say, a "young" section.
DIN-rail power supplies aren't included here, since they were added to the power supplies section earlier.
CS-8 eight-channel I/O module for home and industrial automation systems
eWelink single-phase WiFi relay rated for 63 A
DDS238-2 wattmeter, energy meter, and WiFi-controlled relay, rated for up to 65 A
ZUBR-D2-63 voltage relay from DS Electronics
VC-115 voltage relay from Novatek-Electro
OM-110 power limiter relay from Novatek-Electro
EM-126T multifunction WiFi relay from Novatek-Electro
EM-482 interface converter from Novatek-Electro
OB-215 digital I/O module from Novatek-Electro
PEF-321AVR three-phase automatic transfer switch controller from Novatek-Electro
RN-119 voltage relay from Novatek-Electro
EM-130 programmable WiFi astronomical timer from Novatek-Electro
UPS-1000 uninterruptible power supply from Novatek-Electro
RPM-416 electrical parameter recorder from Novatek-Electro
RN-11 voltage indicator from Novatek-Electro
EM-129 WiFi energy meter with protection and control functions from Novatek-Electro
RN-263t multifunction voltage relay from Novatek-Electro
Novatek-Electro PEF-320 phase selector
PEF-301 phase selector from Novatek-Electro
What is an astronomical timer? Another handy little gadget.
DIN-rail voltage, current, and power meter. A powerful little gadget.
Electronic loads
I never really thought there would be so many of them, and there’s at least one more possible use for a panel ammeter-voltmeter.
Atorch DL24EW electronic load
Atorch DL24M electronic load, 600 W kit
DIY Atorch DL24, an inexpensive electronic load with four-wire connections
Learn DIY Power module for a multichannel battery tester
ZH-YU ZB206+ battery capacity tester and how it measures internal resistance
DIY Kit for building a simple 150 W electronic load
DIY Sousim electronic load controller, or another device for using up "excess" electricity
A pair of electronic loads, or my experience buying from Taobao
DIY Power supply inside out, or the control board for an electronic load
Amateur radio, odds and ends, and other useful gadgets
Delta AFB0712SH fans, another attempt
Decent leads for a bench power supply and alligator clips
More fans, or how I bought Sunon
Interesting 70 mm AVC fans
Multimeter fuses, 1 and 10 A
A soft, great soldering iron cable, but......
M3 plastic fastener kit
Colored button caps
Illuminated push-button switches for a 16 mm hole
Frames for assembling battery packs from 32xx0 cells
A couple of types of stranded wire with silicone insulation
A couple of types of 5 mm LED holders
Set of 300 plastic PCB standoffs
Multimeter probes + tip set
A selection of connectors for banana plugs
Universal battery holder with a four-wire connection
HY-510 thermal paste and thermal pad
A radio amateur's helpers: three hot-melt adhesives and one thermal paste
Learn Universal battery holder with a four-wire connection
Enclosed 18650 battery holders, with a switch too :)
Holders for four 18650 batteries
Stars-922 thermal adhesive
3x18650 holders, a mini review
Dual 18650 battery holders
A brief review of BST-706 solder paste
More crimp terminal and insulated ferrule kits for joining wires
Crimp terminal kit for stranded wire
Learn Nickel strips, or what battery packs are made with
A couple of 18650 holders: Keystone vs. Blossom
Single frames for assembling 18650, 18500, and 18350 battery packs
Balance connector with wire
Good-quality holders for 18650 batteries
Frames for assembling battery packs from 18500/18650 cells
Carbide drill bit set, 0.5–0.9 mm: a short review on a sharp subject
DIY Various bits and pieces, or a small upgrade to an engraving machine
K5 Pro, or what to do when you don't have thermal paste on hand
A really useful find, or let's talk about storage systems
Tamiya L6.2 battery connectors
Two types of holders for 18650 batteries
Thermal pad
DIY LG Chocolate flex cable and a small repair.
Learn DIY Paper for making PCBs using the toner transfer method, or how to make a PCB at home.
Radio Components and Modules
74HCT125, SGM6130, and a little about repairing a 3D printer board
Used SPA20N60C3 transistors: something strange
Used HY3708 transistors
FDA59N30 transistors: second attempt
EGS002 board and display for building a pure sine wave inverter
Used FDA59N30 transistors compared with new ones
An interesting, but slightly odd, battery protection board
Universal trigger (cheater) supporting QC and PD protocols
DIY A tiny encoder and restoring an old mouse
KSD-01F thermal switch in a TO-220 package
Learn DIY A few capacitors and how they affect converter ripple
50 Hz transformers, or almost 15 kg of iron in one article
USB galvanic isolation module
DIY USR Ethernet-UART module and a little about how to use it
PSMN020-150W and PSMN040-200W: MOSFETs for linear operation, plus an IRFP260M "bonus"
Adapter for an electronic load to test power supplies with USB outputs
1–47 mΩ, 0.5% current-sense shunts from Isabellenhütte
DIY QC 3.0 controller for repairing a charger
IXTK90N25L2, or how I bought used transistors on Taobao
DIY Samwha BL capacitors, a strange cable, and a little about batch-modifying drivers
20 mΩ 2512 SMD resistors
1604 character LCD
3 W LED arrays in the 2820 package
Nichicon, Epcos, and Elna, or how I bought capacitors on Taobao
DIY FR9888, a synchronous step-down converter IC
DIY TRI1461, another tiny IC for building a DC-DC converter
DIY MP2359DJ, a decent little PWM controller
DIY A large OLED display, or building a powerful power supply, part 2
DIY IRFP250 MOSFETs: review and a little about their use.
DIY ICL7660, another useful little IC.
DIY TV tuner with an LVDS interface, or bringing an old monitor back to life.
DIY SC6038, or a DIY charger for a 7.4 V battery.
Learn DIY MC34063: one of the most common PWM (PFM) controllers, plus a brief look at how DC-DC converters work
DIY CDRH104R inductor assortment and a brief look back at its history.
DIY IC for a Li-Ion battery charger.
DIY AMC7135, or reviving a notoriously bad flashlight.
DIY 2004 display, or when 1602 is no longer enough.
DIY HC- 06 Bluetooth module, or an unexpected turn in the bench power supply story.
DIY 1602 LCD, or stone soup
DIY Rotary encoder, just a decent, ordinary encoder.
Capacitors suitable for use on motherboards and elsewhere.
DIY LED strip, or making do with what you have
DIY The IC and other components of a high-power LED driver.
10 W LED modules, part two.
Capacitor assortment
100 W LED matrix.
10 W LED modules.
Measuring instruments, including kits for assembling them
An inexpensive, decent pulse oximeter
UNI-T UTG932E signal generator and upgrade to the UTG962E
HT-A2 thermal imager with 320x240-pixel resolution
Bluetooth module for the Fnirsi FNB48 USB tester and a brief overview of the software
DIY Modifying the UT181A multimeter's RTC power circuit
New from Fnirsi: the FNB48 USB tester
MUSTOOL X2 Pocket multimeter and clamp meter
ZKEtech EBC-X 0510 eight-channel battery tester
FNIRSI-1C15 mini oscilloscope
ZKEtech EBC-A40L electronic load and battery tester
DIY Finishing the LCR meter build and switching it to battery power
Fnirsi FNC88 USB tester
Inexpensive Sndway SW-T40 rangefinder
DIY Modifications to the EBC-A10H electronic load, part one
Small, simple 60 V, 10 A ammeter-voltmeter
TC66 (C), USB tester with USB Type-C connectivity and a built-in trigger for various protocols
Ammeter-voltmeter with a VFD display and power measurement
EBC-A20, another electronic load from ZKEtech
ZKEtech EBC-A10H electronic load
YR1035, another milliohm meter and an improved version of the YR1030
SIN90S, ammeter-voltmeter with expanded functionality
Panel ammeter-voltmeter, 100 V, 10 A
Small ammeter for currents up to 5 A
Small voltmeters for up to 30–35 V
SNDWAY SW-S70 laser distance meter
Multichannel voltmeter module
Learn YR1030, a milliohm meter for measuring low resistance and battery internal resistance
An infrared thermometer for the home workshop
Power-Z FL001T, or another all-purpose USB meter
ZY1276, an all-purpose USB meter from YZXstudio
DIY VAC1100A ammeter-voltmeter with a measurement range up to 120 V, 100 A, and a little more
Uni-T UT-D07A Bluetooth adapter for UT181A, UT171A, and UT71E multimeters
Small, simple oscilloscope
DIY Advanced XJW01 LCR meter kit
USB tester, attempt number two
USB tester, meter, or just a display??
EONE ET201, a 2-in-1 multimeter, or how a snake and a hedgehog were crossed
DXL360S, dual-axis digital angle finder
OWON B35, an interesting multimeter for careful users
FLUKE - 15B+, reliable, well-made, expensive
DIY Miniature multifunction meter for all kinds of projects
Uni-T UT181A, professional logging multimeter
Multimeters: so alike, yet so different
Thermal imaging cameras: what they are and how they work
ZKE EBC-A10, a multifunctional electronic load with a battery tester
Multimeters come in all shapes and sizes
Another handy little gadget: a compact voltmeter with a 99.9 V measurement range
RLC and ESR meter, or a device for measuring capacitors, inductors, and low-resistance resistors.
DIY Kit for building a popular transistor tester
DIY Kit for building a simple DDS signal generator
DIY Build your own oscilloscope? Really? Yes! DSO138, an oscilloscope kit
DIY Panel ammeter-voltmeter and how to use it.
ACM04, clamp meter with True RMS and DC current measurement.
RZD-60 60-meter laser rangefinder: small but mighty.
Mastech MS8910, for when you want something extra alongside a regular multimeter.
DS203, a decent, compact, and simple oscilloscope at a nice price.
Compact DT8250 infrared non-contact thermometer
NF8108 cable tester: a good tool with an unpleasant catch.
USB thermometer: mixed results
Compact and quite decent VC921 multimeter
Voltmeter with a 0.56-inch display.
Ammeter with a 0.56-inch display, or simply a number display.
Tools, soldering irons, etc.
Worx wu533 cordless circular saw
6.0, 6.35 and 8 mm collets for a router
DIYNY-D08 spot welder controller
Makita battery-powered trim router
Ksger handle for a T12 soldering station, or tips for soldering irons
Two-speed brushless drill/driver
DIY T12 soldering iron controller and a compact soldering station built around it
18 V Makita battery-powered drill/driver
Special alligator clips for connecting to batteries
An interesting soldering iron at a relatively low price
DIY 6Y880 spot welder controller and various other components
A quick look at a small pair of tweezers
125 mm angle grinder for a Makita battery
Spot welder powered by supercapacitors
SH72, a compact soldering iron, or a TS100 for the budget-conscious
DIY Inexpensive kit for building a T12 soldering station
Pigong 8858 hot air rework station and a kit of assorted accessories
Accessory set for an oscillating multi-tool
Worx cordless rotary hammer, or when all you have is a hammer, everything looks like a nail
Raitool trim router, or “file to fit after assembly”
Review of the KSGER 2-in-1 soldering station with T12 tips and a hot air gun
Bakon BK3200 soldering station rated at 120 W
Review of various accessories for an oscillating tool
A decent wire stripping and crimping kit
UNI-T UT387B, a hidden utility detector
DIY Laser engraver with a 10 W laser
STANLEY STSJ6501-A9, also known as the DeWalt DW349, or simply a jigsaw
GORDAK 863, a 3-in-1 soldering station
TL866CS, a universal programmer
MILWAUKEE 2626-20 M18 CORDLESS MULTI-TOOL oscillating saw
STANLEY STDH7213 corded hammer drill
Milwaukee Electric Tool 2607-22CT M18 Hammer Drill Kit
DIY A small CNC router/engraver
A pair of cordless drill/drivers
GJ-8018LCD, a basic hot air gun and a brief comparison
Flexible shaft and holder for a rotary tool
DIY Bakon BK950D, a small soldering station with a T12 iron
DIY Kit for building a laser engraver with a 2.5 W laser
DIY ZONESTAR P802, also known as the Prusa i3, or building a 3D printer from a kit
BX205, a self-leveling five-beam cross-line laser level with a plumb point
An interesting USB microscope
TS100 soldering iron, or a familiar tool in a new guise
A brief review of a small soldering iron and a little theory.
0.6-6.5mm 400W 220V Mini Die Grinder. Or simply, a rotary tool.
A set of assorted attachments for a handheld grinder.
Hakko T12 tips and using them in a non-Hakko soldering station.
Conical drill bits
Audio equipment
Learn DIY Kit for assembling a speaker protection board
Signal level meter with a VFD display
DIY AK4495SEQ + USB converter: building a DAC from a kit
DIY DarTZeel amplifier clone for those who like a warm sound
DIY Kit for building an LM3886-based stereo power amplifier
Learn Stereo volume control with input selector and VFD display
Auxiliary devices and other items that don't fit into the other sections
4S capacitor balancer and a little about how it works
Active capacitive balancer for 6S battery packs
Learn Active balancers for lithium batteries: what they are and why you need one
RS485 module with galvanic isolation for connecting RD60xx series converters
Protection board for 3S battery packs
4S 40A protection board for LiFePO4 and an example of using it in a UPS
Contactless sensor for controlling lighting
Relay module controlled via Ethernet, USB and (surprisingly) RS485
Voltage indicator for 1-7S lithium battery packs
Learn DIY 64x32 LED RGB panels, or how to buy this kind of equipment in China
Learn DIY LED panels and controllers, or how to build an LED display, part two
Learn DIY LED panels and controllers, or how to build an LED display, part one
DIY More LED panels: upgrading a scrolling LED display
Small protection board for 2S lithium battery packs
DIY LED RGB panel, or my first encounter with a scrolling LED display
DIY Battery protection board, or how to rebuild a cordless drill battery
Digital PWM speed controller for a brushed DC motor.
A rather unusual button
Learn DIY 125 kHz RFID reader, or DIY when you least expect it :)
125 kHz RFID key fobs: a mini-review.
DIY USB-RS232 TTL converter: a good product at a low price.
Consumer electronics, including clocks and chargers for cylindrical batteries
Makita Power Tool Battery Charger
An Unusual Power Bank with QC/PD Output up to 22 W and Some Quirks
Another Little Clock with NTP Synchronization and an LED Display
Vapcell U2 Universal Charger
A Simple Clock with an LED Display and NTP Synchronization
EleksTube IPS Desk Clock
Casio WV-59DE-1AVEF Watch
Vapcell S4 Plus Four-Bay Charger with Charging Current up to 3 A per Slot
Osram vs. Gauss: How I Looked for a Halogen Replacement—One Year Later, Things Are Still Bad
DIY A Display for the Start-7231 Clock, or a Nostalgia Post
Digital Clock with an “Analog” VFD Display
Desk Clock with a Large VFD Display and Wi-Fi Time Synchronization
Desk Clock with a VFD Display and Wi-Fi
DIY “A Clock That Doesn't Tick” from China with a Japanese Display
Sony DSC-W800 Camera, or Challenging Stereotypes
DIY LED Ceiling Lights, Part 2: Fixing the Mistakes
Ugreen PB107 Power Bank with a Claimed Capacity of 10,000 mAh
Epilot E4 Power Bank for Four 18650 Cells with Pass-Through Charging
WeLoop Hey 3S Fitness Watch
A Power Bank for 8 18650 Cells, More or Less
iLife A6 Robot Vacuum
ILIFE A4 Robot Vacuum, a Little Helper Around the House
DIY Power Bank and Charger for Four 18650 Cells
RGB LED Strip and Several Controllers
Scales for Very Light Items, 0.001 g–10 g.
Gaomon 860T, Another Graphics Tablet.
FL-4H-LCD-D, or a Charger from an Unknown Manufacturer.
Povos PQ8602, an Electric Shaver from China.
Nitecore i2, a Pretty Good Charger for Li-Ion, Ni-MH, and Ni-Cd Batteries.
Another Set of Kitchen Scales
HUION 1060 Pro, a Pretty Good Graphics Tablet.
UltraFire C2 Cree XR-E, or an Average Flashlight That Thinks It's a Thrower.
DIY A Clock That Doesn't Tick
DIY An Unusual Power Bank That Couldn't Escape a Few Modifications.
A Small Flashlight with a CREE XM-L T6
DIY 4.3-Inch Monitors and a Bit of DIY Hacking.
Spoon Scale, Mixed Feelings.
Universal Air Conditioner Remote (Almost Tactical :)))
A Simple Standalone Smoke Detector, or a Device That Can Really Save Lives.
5 W LED Ceiling Lights
Computer
Orico USB 3.0 hub and USB Bluetooth 5.0 adapter
USB hub for Raspberry combined with an Ethernet adapter
ORICO Chroma CN300 500GB external SSD with USB-C interface
Affordable PowerLink SP402F 4+2-port PoE switch
MechZone dual-band WiFi repeater
Choetech PD 100W cable, 1.8 m long
128GB external SSD with USB Type-C interface
DIY WiFi USB adapter for a T2 tuner and a small modification
Samsung 860 EVO 250 GB SSD
Alfawise 256GB, a quick look at a microSD card
Zheino M3-128 128GB mSATA SSD
Learn What is PoE? A look at a pair of switches
RECADATA 120 GB M.2 SSD
Bidirectional HDMI switch
MIXZA 128GB microSD memory card
A quick look at a small mSATA-to-M.2 adapter
Learn DIY HDMI dummy plug, or how to bring the PIPO X10 back to life
Affordable USB video capture device
KingDian N480 - 240GB, M.2 SSD and an adapter for it
Small four-port USB 3.0 hub from Ugreen
Learn Ezcap 284 HDMI, component and composite video capture device
PTVdisplay DA02, or trying to connect a smartphone to a TV
SanDisk SDDD2, or a two-in-one flash drive
Mele F10 Deluxe, a very handy learning remote
KingDian S280 480GB SSD, just a fast SSD
ORICO 2139U3, a 2.5-inch hard drive/SSD enclosure and a couple of cables
ASUS RT-AC1200GU, WiFi router with gigabit ports
KingDian M280 - 120GB, an mSATA-form-factor SSD
ORICO 9558RU3, or five hard drives in one box
2GB DDR2 Kingston KVR800D2N6, or a quick look at another memory module
Kingston 4GB SO-DIMM DDR3L, a comparison
Netac N5M mSATA, a quick look at a small SSD
Server network PCI card with two Gigabit Ethernet ports
850 Evo, or a 250 GB Samsung solid-state drive
Netac P500 64GB Micro SD, a quick look at a tiny memory card
DIY TP-link TL-WR702N, or my new little helper
Compact Bluetooth keyboard with an interesting touchpad
USB 3.0 Gigabit network adapter
Viboton S1, a decent little wireless keyboard with a Russian layout
USB network adapter, and what I wanted to use it for.
Four-port USB 3.0 hub.
USB video adapter, or almost a graphics card.
ORICO PFU3-2P. Dual-port PCI-Express USB 3.0 card.
USB 3.0 - HDD or what to do with a 2.5-inch hard drive.
SSK 32GB: Not everything with a blue connector is USB 3.0.
Unbranded 32GB microSD.
DIY A decent cooler for the Acer 5720Z and similar models.
A decent compact wireless keyboard, but with a few quirks.
HDMI-to-VGA converter.
Gigabit Ethernet PCI Express network adapter
DIY Motherboard for repairing a Toshiba Satellite L755D laptop
A really cheap Bluetooth adapter.
Bluetooth headset
Video Surveillance
Dahua IPC-HDBW4431R-ZS surveillance camera, or what the competition has to offer
DS-2CD1141-I or another Hikvision camera
Hikvision DS-2CD2085FWD-I, an 8-megapixel surveillance camera
Reolink RLC-410WS: 4 MP, 5 GHz WiFi and built-in memory card
Reolink C1 Pro network pan-and-tilt camera with 2560x1440 resolution
ESCAM Q8 and Sricam SP022 network cameras: so different, yet so alike
ESCAM G02, a pan-and-tilt IP camera with 1280x720 resolution
An inexpensive 1080p IP camera from OWSOO
A pair of 1080p AHD cameras from KKmoon
A pair of AHD 1920x1080 cameras + DVR
Learn A budget kit with four AHD cameras and a DVR, or what AHD-M is all about
ESCAM QD410, a 4-megapixel camera: comparative review
Szsinocam SZ-IPC-7032CSW, a 2-megapixel IP camera
Learn A DVR and four cameras, or what video surveillance is all about
The 4 MP DS-2CD2042WD-I and an updated version of my favorite DS-2CD2032F-I in one review
DS-2CD2032 cameras I like.
Mini PCs and TV boxes
Beelink T4 Mini PC
Beelink GT-King Pro TV box based on the new Amlogic S922X-H
Magicsee N5 NOVA TV box based on the RK3318
Beelink L55, a mini computer with an i3-5005U processor
The surveyor's computer, or simply the Acute Angle AA-B4
Compact DVB-T2 tuner
MECOOL-KIII-PRO, a decent TV box with a built-in T2 tuner
Scishion Ai SE, a powerful TV box based on the Rockchip RK3399
Mecool KM9, a TV box with an Amlogic S905X2 processor
Tanix TX6 TV box, another option based on the Allwinner H6
MECOOL M8S Plus DVB-T2 TV box, a hot one
H96 Max TV box based on the new Amlogic S905X2
Magicsee C400 hybrid TV box with a DVB-T2/S2 tuner
HYSTOU P04 i3-7100U mini PC, or the computer I couldn't overheat
H96 MAX, or let's mod it once, then again
X9T, just a TV box based on the Amlogic S912
EACHLINK H6 Mini, another TV box based on the Allwinner H6
Mecool M8S Plus L TV box based on the S912
Mecool KM8, a TV box with voice control and Certified Android TV
Beelink Gemini X45 Premium with a Celeron J4105 processor, 6GB RAM and 128GB SSD
HYSTOU FMP04 mini PC with an i5-7200U processor
Beelink AP34 Pro, a mini PC with 6 GB of RAM
Alfawise T1, a mini PC with an N4100 processor based on Gemini Lake
Xiaomi MiBox 3 TV box, international version
Tanix TX28 TV box, 4/32, USB 3.0, 5 GHz and RK3328
Alfawise S95, a basic TV box with an S905W
Alfawise A95X R1, an inexpensive TV box
Mecool M8S PRO L TV box, an updated version of the Mecool M8S
MINIX NEO N42C, a small computer based on the Intel N4200
Zidoo H6 Pro, a TV box based on the AllWinner H6
Alfawise H96 Mini TV box based on the new Amlogic T962E SoC
Beelink GT1 TV box, Ultimate version
Wechip V8, an S905W-based TV box, or attempt number two
Z66X Z2 TV box based on the new ZX296716 SoC
ACEPC AK1, or another PC
Tanix TX3 Mini TV box with an S905W inside
Vorke Z6 TV box: what it's really like
Alfawise Z28 Pro, an RK3328-based TV box with 2/16 GB of memory
SCISHION V88 Mars II, a rather controversial TV box
Beelink BT3 Pro mini PC, another one
Beelink M1, a mini PC with an Intel N3450
LAKE I, another TV box with a Realtek RTD1295 inside
Vorke V1 Plus mini PC, or a new version of the workhorse
MX9 PRO, a mini TV box based on RK3328
MECOOL M8S PRO, a very small TV box, or DDR3 vs DDR4
Beelink AP42, another mini PC based on Apollo Lake N4200
Z28, a TV box with the new RK3328
YUNDOO Y8, a powerful TV box
Beelink SEA I, a TV box based on Realtek 1295, with HDMI input
A95X King, a small TV box based on RK3229
PIPO X10, or variations on the desktop tablet theme
VOYO V1 mini PC, the first swallow with Apollo Lake
CHUWI HiBox, a small but unusual computer
Sunvell T95K Pro, a TV box based on the well-known Amlogic S912, but with an original design
HYSTOU FMP06, a small computer based on the Celeron N3150
Vorke V1 mini PC, a little workhorse
Nexbox A95X media player based on Amlogic S905X
MECOOL BB2 media player
YUNDOO Y2, a TV box with the new S912 processor
Mini M8S II, or the Mini M8S with an updated processor
Beelink BT7, a small computer based on the Atom X7-Z8700
Vensmile i10, a small but interesting computer based on the Celeron 3755U
NEXBOX MXQ PRO, an affordable TV box based on Amlogic S905
HYSTOU FMP03, a mini PC with a Core-I3-5010U processor
Sunvell T95, a nice-looking TV box based on Amlogic S905
Mini M8S, a decent little TV box based on Amlogic S905
MX4, another TV box based on the now-familiar RK3229
Mini MXQ, a TV box with the new RK3229
Wintel Pro CX-W8, an affordable Windows 10 mini PC
Onda M2 Mini PC, small, but not Atom-based
MeeGoPad T03 PRO, it's back, but is it any better?
A TV box with the new S905—let's see how it performs
Beelink i68 TV Box 4K
PIPO X9, a tablet and TV box hybrid.
MXIII-G, a 4K + Gigabit Ethernet TV box that needed no modifications
MeeGoPad T02, almost the smallest computer running Windows 8.1
Vensmile W10 - a TV box/mini PC, even smaller, thinner, and lighter
PIPO X7S, Windows and Android—can they live together?.
Pocket P1, a mini PC about the size of a smartphone.
PIPO X7, a Windows 8.1 TV box that can easily replace a small computer.
TV box MXQ S85 Amlogic S805
A decent DVB-T2 tuner at a reasonable price.
CubieTruck, or simply Cubie.
Phones and tablets
Main camera for the Cubot Power and how to replace it
CUBOT POWER, a strange smartphone
Teclast P80 Pro, a brief look at a small tablet
VOYO i8 Pro 4G tablet, 3/64 GB, 10.1-inch
AlldoCube Power M3 4G, a tablet with a 10.1-inch screen
Lenovo P2 smartphone, a high-capacity battery and AMOLED screen
CUBOT Magic smartphone, another Cubot
Vernee Thor Plus smartphone, or what happens when you cross the Thor and Thor-E and add AMOLED
Coolpad Max A8, a decent smartphone with a 5.5-inch screen
Cube iPlay 10, a tablet with a 10-inch Full HD screen
Gretel A7, a decent budget smartphone
Expro x1 by IRULU, a small, modest tablet
VOYO VBOOK V2, an 11.6-inch netbook with an N3450 processor
Vernee Thor E smartphone, the next in the Thor lineup
Cubot Rainbow 2 smartphone
UMI Plus E, a smartphone based on the Helio P20
Teclast Tbook 10 S, a tablet that needs no upgrades
Doogee Y6 smartphone, or yet another Doogee
Cubot Cheetah 2 mobile phone, an honest battery and a healthy appetite
Leagoo T1 Plus, a smartphone with a 5.5-inch screen
Another look at the Leagoo M5 smartphone
Cubot Rainbow
Ulefone U007, a look at another smartphone
CUBE U27GT, a small Android tablet
DOOGEE X5 MAX, an affordable smartphone with Android 6
Vernee Thor, impressions after almost a month of use
Cube iwork8 Ultimate, a small Windows tablet with an Atom x5-Z8300
Teclast X98 Pro, so this is what Cherry Trail is like
Onda V891W, a tablet with every chance of becoming popular.
Miscellaneous
How to protect electronic devices and keep them running when the mains voltage is too high
How to choose an electronic load
DC-DC converters: how they differ and how to choose the right one
A common and dangerous mistake in PCB layout
What is an LCR meter and what is it for?
Something that occasionally comes in for repair: a strange charger
Pure sine wave inverter, or how the Chinese have gotten out of hand
How to charge a battery faster without violating its operating guidelines
Delivery delays, lost parcels, and indifferent customer support? Meest-express is the place for you. Updated 05.01.23
How to choose an adjustable converter
Off-grid power: what to do during rolling blackouts, part 3: batteries
Power supplies: how they differ and how to choose the right one
Off-grid power: what to do during rolling blackouts, part 2: UPSs and inverters
Off-grid power: what to do during rolling blackouts, part 1: power banks
Design mistakes found in switching power supplies
DIY solar power station—is it really possible? Absolutely!
Notes on converting a manual sprayer to battery power
Rulers: unusual varieties
Another little tool, this time a map measurer
An interesting 0–21 mm micrometer
Emulator for controlling a QC/PD power supply
DIY Full-extension stainless steel telescopic slides
Jeep Willys Transporter-6 in camouflage
A pair of cables for connecting audio equipment
Silver marker
ABOXOO ET001 electronic cigarette
Wismec WS-04 atomizer, 1.3 Ω resistance and 8–14 W power
Wismec Active Kit 80W With Bluetooth Music vaping device
Homgeek manual mini espresso/lungo coffee maker
A cute little kitty
Cosmetics organizers and a quick-witted seller
A handbag I liked.
A set of thread, needles, and all sorts of sewing bits and pieces.
A loose striped sweater, or a man's take on women's clothing.
Notes from a heavy smoker, or a few e-cigarette liquids + bonus
ECT CE4W-2, or my first electronic cigarette.
While doing all this, I noticed that some really interesting and still relevant reviews had been buried under others that are less on-topic for now. So I wanted to put together a guide, table of contents, or catalog—whatever you prefer. I’ve moved all my reviews, some articles, and a selection of the most useful reviews by other authors into this catalog.
The catalog structure may change a little (quite possibly, in fact). For now, I’ve grouped things by topic and date, from newest to oldest, but I’ll probably split some sections further. Also, since some reviews cover how to use the product as well as the theory behind it, they’ll be listed under DIY or Learn, as appropriate.
I won’t add detailed explanations for now. Writing up more than 700 comments would take a lot of time and effort, though I may add notes to some entries, since review titles aren’t always very informative.
I’ll start, of course, with power supplies.
Baseus CCCP30UE 2A1C 30 W power supply (charger)
24 V, 10 A power supply—how can this happen??
MP-U200S48 power supply, 48 V, 4 A
Repairing a Panasonic air conditioner power supply; review added
Repair and review of the Bluetti EB55 power station
A 500 W charger—so that's what you are, Abibas
Repairing two PSU60B power supplies from a mini PBX
A simple repair of a small power supply, plus a little theory
Another power supply repair: a case where it's worth doing
A relatively simple repair of a pair of power supplies
Repairing a SVEN SB-550 power supply and replacing the PWM controller
MeanWell LRS-200-12: review and modifications
MeanWell NET-35, or a riddle from the manufacturer
Reviewing and converting a Meanwell LRS-150-12 power supply into a UPS
New version of the PSU-UPS adapter board: prototype
Meanwell AD-55A, a power supply with UPS functionality—or how to turn a UPS into a UPS
19 V, 3.42 A power supply: cheap and dreary
Gospower G0966A-540-0278 power supply, 54 V 2.78 A (64 V 6 A)
MeanWell EPP-500-54 power supply
Compact OVEN BP60A-S power supply for automation cabinets
60 V, 5 A power supply and a few notes on modifying it
Sanmim SM-PLG06A power supplies: when power isn't everything
YS-65SCB power supply, 24 V 65 W
A not-quite-ordinary 25/5 V power supply
YS-U50SL power supply, 24 V, 2.3 A
UM-U120S power supply, 12 V, 10 A
MeanWell HDR-15-24 power supply
24 V, 6 A power supply from Geekcreit
Novatek-Electro PS-220/24-1.5 industrial power supply
Low-profile MeanWell LRS-350-48 power supply
Used VeriFone 9V (9.3V)-4A power supply. Now model SM09003A.
VeriFone 9V-4A power supply. Now the AU1370933g model.
VeriFone 9V-4A power supply (model Au-7992n
Low-profile MeanWell LRS-100-48 power supply
LRC-60-1050 and LRC-60-1400 LED power supplies (drivers) for LEDs up to 60 W
A pair of 60 W power supplies, rated for 12 and 24 V
NVVV S-800-70 power supply for the RD6012 converter
Modiary MDA238 42 V 2 A charger for 10S lithium battery packs
DIY MeanWell PSC-160A-C: fixing its shortcomings, modifications, and an update to the review
MeanWell PSC-160A-C, 160 W power supply with UPS function
Sanmim GPA40B power supply, 12 V 40 W
Used 12 V 5 A power supplies
Geekcreit 36 V 180 W power supply, another entry in the “people’s” series
24 V 8–10 A power supply
DIY MeanWell SP-320-5 power supply, 5 V 55 A
ACCORD ACC-1000W-80G power supply
68 V 600 W power supply, and a little more about the RD6006 converter
Low-profile Meanwell LRS-350-24 power supply
TMP-30124C power supply by Traco Power
460 W in a tiny box? No problem: a compact 12 V power supply from HP
Another low-profile power supply, 12 V 20 A
Low-profile S-120-24 power supply, 24 V 120 W
SANMIM GFA15A-5 power supply, 5 V 15 W
SANMIM GPT70A-12 power supply, 70 W 12 V
Low-profile SANMIM GFA20A-12 power supply, 12 V 20 W
Compact built-in PLF12A-12 power supply, 12 V 1 A
A brief look at a small, low-power supply
24 V 20 A power supply
48 V - 12.5 A power supply
48 V 125 W power supply: inexpensive, but very good
24 V 300 W power supply: competitor or companion to the “people’s” 24/100 supply ?
24 V 3 A power supply
Compact Hi-Link HLK-PM12 power supply
Compact power supply with power factor correction and a claimed output of 400 W
12 V 10 A board (claimed)
Mean Well IRM-60-24ST power supply, sixth of six
Mean Well HDR-100-12N power supply, fifth of six
Mean Well HDR-60-12 power supply, fourth of six
Mean Well EPS-65S-24 power supply, third of six
500 W switching power supply for audio amplifiers
EPP-100-12 power supply, second of six
MeanWell SDR-120-24, first of six
RPS-120-27 power supply made by Mean Well
24 V 1.2 (2) A power supplies
Another power supply power supplies, now 48 V 0.5 (1) A
12 V 0.5 (1) A power supplies
12 V 3 A power supply for access control systems
Inexpensive 12.6 V 3 A charger
Another charger for assembling 3S Li-Ion battery packs
12.6 V 3 A charger, or continuing the discussion about modifying a cordless drill battery
Another power supply, this time 12 V 50 A or 600 W
Another power supply, this time 24 V, 20 A and 480 W
Another power supply: 12 V, 30 A and 360 W
A small uninterruptible power supply for access control systems
12 V, 20 A and 240 W power supply with passive cooling
Power supplies, small and very small
48 V, 5 A and 240 W, or a power supply that managed to surprise me
36 V, 10 A and 360 W, or more on how power supplies work + a small bonus
Learn 5 V, 7.2 A and 36 W, or a short guide to choosing the right power supply.
S-180-12 180W 12V / 15A power supply in an unusual form factor
24 V 5 A power supply, plus an extra 1 A as a bonus :)
24 V 100 W power supply with a pretty good result
5 V 2 A power supply with a microUSB plug
Another 12 V power supply, this time rated for 1 A.
12 V 6–8 A power supply that was a pleasant surprise.
DIY A dual-voltage power supply: it can be useful sometimes, but unfortunately... + Modification.
DIY 12 V 5 A power supply, or how it could have been made.
12 V 180 W power supply.
DIY 12 V 3 A power supply and a small upgrade to a UPS
DIY 20 W LED driver, or modifying a light fixture
Standard voltage converters, i.e. without any digital control, QC/PD or other "features".
Step-up voltage converter rated for up to 400 W
Step-down voltage converter with output current up to 10 (12) A
Powerful dual-channel DC-DC converter
Step-down voltage converter with output current up to 20 A
Compact, high-efficiency step-down converter based on the MP2225
5 V, 5 A converter based on the TPS40057. Small, inexpensive, and great.
A pair of small isolated voltage converters with bipolar outputs
Small 15 W isolated voltage converter
Small isolated voltage converters rated for up to 50 W
Compact, powerful isolated voltage converters
Powerful and unusual universal converter based on the LTC3780
DC-DC step-down module rated for 10 A
DIY Multichannel DC-DC converter
DIY Multichannel DC-DC converter: Pico PSU ATX and a little about how to use it
Learn DIY A pair of step-up converters and a small upgrade to SEPIC
Learn Universal voltage converter, or a few words about what SEPIC is
Learn DIY DC-DC converter, as sometimes happens.
Inexpensive and convenient DC-DC converter.
Adjustable power supplies and converters
New model of the RuiDeng RK6006 adjustable converter
RD6024 adjustable converter
RD6012P(W) hybrid adjustable voltage converter
XYH3606, a versatile adjustable converter with Wi-Fi and other goodies
RuiDeng RD6006P hybrid adjustable converter
WZ5005 adjustable voltage converter: could it really be an alternative to DPS converters?
Fnirsi DC-6006L adjustable voltage converter
RD6018, a new converter model from RuiDeng
RD6012(W) adjustable voltage converter, a new version from Rui Deng
DIY XYS3580 adjustable SEPIC voltage converter
XH-M403 adjustable voltage converter
New RD6006 (W) voltage converter module from Rui Deng
Versatile adjustable voltage converter powered by USB and supporting QC mode
Voltage converter + control module with an attractive design
DPX6012S, or a new addition to the world of adjustable power supply boards
DPH5005, an adjustable voltage converter with a universal input
DPS-5020 adjustable voltage converter and its enclosure
DIY Kit for building a 35 V, 5 A linear adjustable power supply
DPS8005 adjustable DC-DC converter + USB + Bluetooth
DIY Gandf digital linear power supply board, 50 V, 10 A
Power module for a 30 V, 10 A linear power supply
Kit for building a 60 V, 20 A linear adjustable power supply
CPS-6011 adjustable power supply, or another GOPHERT
DIY Adjustable power supply kit board, or a proper power supply should be heavy, part 2
DIY ZXY6020S, or the next chapter in the story of a homemade high-power bench power supply
GOPHERT CPS-3205 bench power supply, or that rare case....
DIY Adjustable power supply kit board, or a proper power supply should be heavy
DIY A simple adjustable DC-DC converter, or a DIY bench power supply V2.
DIY A decent ZXY6005S DC-DC module, or a DIY bench power supply.
Power supplies and converters with USB outputs, plus QC, PD, and even power bank mode.
Baseus 160W CCZX-160CX car charger
An interesting power bank based on the SW6208 chip for eight 18650 cells
Compact converter with QC support and two outputs
Choetech PD6008 power supply (charger) with up to 100 W output power
Choetech Q6006 power supply (charger) with 61 W PD support and GaN technology
CHOETECH Q4004 power supply (charger) with 60 W PD support
Choetech QC 18W power supply (charger) bought on sale
An interesting cable and cross-board for installing YZXstudio converter modules
ZC823 v13, an updated version of the multi-charger board
Two more multi-standard DC-DC voltage converter modules from YZXstudio
Small DC-DC converters with USB connectors
Three QC/PD multi-standard voltage converter boards
Compact voltage converter with Quick Charge support
5 V, 8 A voltage converter with four USB outputs
Cheap QC 3.0 charger module
Compact QC 3.0 charger / power supply
DC-DC converter with QC 3.0 support
AUKEY PA-T15 charging station with 5 USB ports and Quick Charge 3.0 support, plus a brief comparison with the AUKEY PA-T1 Quick Charge 2.0
BlitzWolf BW-S4 charger with a genuine 50 W output
Raxfly charger (power supply), 5 V with a claimed current of 7.2 A
A not-so-great USB charger (power supply)
DIY 5 V, 6 A charger with 6 ports and charging current display
More articles on power supplies and converters
DIY Air conditioner power supply, or the story of a repair
DIY Preparing power supplies for a multichannel battery tester
A couple of small 9/12 V and 5 V UPS units
Learn DIY How to turn a simple converter into a constant-current regulator
DIY A simple MILWAUKEE charger modification
A power supply: how not to build one
Learn DIY A simple repair of a UC2845-based power supply
Learn DIY Converting a cordless screwdriver to lithium, part two: charging it properly
Batteries.
Samsung INR21700-33J batteries, you won't find them cheaper
BAK N21700CG 5000mAh batteries from Nkon
LG INR21700-M50LT batteries from Nkon
Vapcell IFR32700 G62 batteries, take two
Vapcell F56 5600mAh batteries, almost top of the 21700 class
Vapcell N36 18650 3650mAh batteries
Vapcell T39 21700 3900mAh, just high-current batteries
Vapcell LG-INR21700H40B batteries with a capacity of 4000mAh
Vapcell A11 18350 1100mAh batteries bought locally
BL1860 battery for Makita tools
Makita tool batteries and charger
EVE IFR33140 15Ah batteries bought locally
Shadows of Forgotten Ancestors, or batteries from the past
Vapcell 18500 N24 2400mAh batteries
Vapcell 18650 F35 batteries with a claimed capacity of 3500mAh
Three models of prismatic LiFePO4 batteries from Nkon: a mini-review
More Vapcell LiFePO4 32700 batteries with a claimed capacity of 6200mAh
Vapcell F52 21700 5200mAh batteries
EagleTac 17650 1600mAh batteries from Nkon
No-name 18650 batteries with a capacity of 2600mAh
EVE INR18650-25P 2500mAh - 20A battery (sold under the TerraE brand)
Sanyo UR14500AC 740mAh batteries salvaged from equipment
Sanyo UR18500Y 1300mAh batteries salvaged from a battery pack
BAK H18650CC 2150mAh batteries
Battery for Kindle PaperWhite EY21
LiitoKala Lii-50A battery life test: 200 cycles
XG NCR21700 batteries
LiitoKala Lii-40E battery, 26700, 4000mAh
LiitoKala 26650-55A battery, 26650, 5000mAh
Liitokala Lii-51S battery, 26650, 20 A, 5100mAh
LiitoKala Lii-50A battery, 26650, 5000mAh
Vapcell T42 21700 4200mAh 35A batteries
Vapcell K29 18650 2900mAh 20A batteries
Vapcell ANR26650M1-B LiFePO4 batteries
Vapcell F32 and F34 batteries: review and comparison
Vapcell P2150A 21700 5000mAh, a little more than just a battery
Vapcell K31 18650 3150mAh 18A/35A batteries
Vapcell P50 21700 5000mAh 15A/25A batteries
Vapcell K40 21700 4000mAh 30A/45A batteries
Decent budget BAK N18650CK 3000mAh - 6.1A batteries
LiNiCoMnO2 CATL 3.7V 50Ah batteries
Vapcell T20 21700 2000mAh 40A/60A batteries
Vapcell INR18650 2000mAh 38A batteries: could these be the highest-current 18650s??
Li-NMC 26800 Yuliang 3.7 V 7000mAh multi-component batteries
Vapcell F14 batteries, 1400mAh and 3A in an 18350 size
Vapcell P30 batteries, 3000mAh with a current rating of up to 20A
Vapcell K54 batteries rated at 5400mAh and up to 15A
LG INR18650-MJ1 batteries from Vapcell
Vapcell K15 18500 1500mAh 15A batteries
Vapcell 14650 V11 1100mAh 6A batteries
LiFePO4 EVE Energy 3.2V 90Ah batteries
Protected Liitokala NCR18650B batteries rated at 3400mAh
A short test of a 66160-size LTO battery
Vapcell 21700 T50 batteries, 5Ah with a load current of up to 20/35A, or Samsung's new cell in different “clothing”?
LG 20650 HG6 batteries from VapCell
Samsung INR18650-25S batteries from VapCell
Life test of a 1500mAh 18650 LTO battery: 1200 cycles
VapCell 26650 batteries with a capacity of 4200mAh and a current rating of up to 32A
Samsung INR21700-48X batteries from VapCell
Vapcell Boston Power Swing 5300 batteries in an unusual form factor
Learn M18 battery for Milwaukee power tools
Samsung INR21700-50G batteries from VapCell
Murata US18650VC7 batteries from Vapcell
18650-size LTO batteries with a capacity of 1500mAh
LiitoKala LiFePO4 batteries rated at 30Ah
Samsung INR18650-25S batteries, or what's replacing the classic 25R
Vapcell batteries, part seven: protected 18650 cells with a load current of up to 15A
VapCell IFR10370 140mAh batteries, part six: 10370 size
VapCell INR26350 A20 2000mAh batteries, part five: 26350 size
Liitokala LiFePO4 batteries rated at 32Ah
LG HG2 batteries from a local store
Vapcell batteries, part five: 18650 size
BL1013 battery for Makita tools
Vapcell batteries, part four: 16340, 14500, and protected 18650 cells, plus a charger
Battery for the Teclast Tbook 10S tablet
Vapcell batteries in 16340, 18650, and 21700 sizes
HJ802540 battery: a short test with an unexpected result
Sanyo NCR18650GA 3500mAh: a new life test, or how to kill a battery quickly. Updated 20.06.2020
Lithium Werks (formerly A123 Systems) ANR26650M1-B 2500mAh batteries: it doesn't get any better?
JGNE 26650 LiFePO4 batteries with capacities of 2300, 3000, and 3600mAh
A pair of JGNE18650 LiFePO4 batteries, 1600 and 1800mAh
VapCell IFR32700 6500mAh 30A G65 batteries: big, high-capacity, high-current
VapCell IFR26650 2600mAh 3.2V 55A/75A batteries
VapCell G53 26650 5300mAh 20A batteries, maximum capacity at currents up to 20A
VapCell G45 21700 4500mAh 20A batteries
VapCell INR18500 2200mAh 4A L22 batteries
VapCell M11 18350 1100mAh 9A batteries
VapCell INR14500 1000mAh 10A H10, small but powerful
Learn CSB HRL-1234W-F2-FR battery pack, or thoughts on replacing them with LiFePO4
Learn Liitokala 32700 LiFePO4 and a comparison with similar VariCore batteries
VariCore 32700 LiFePO4 batteries and a few thoughts on replacing lead-acid batteries in a UPS
TrustFire 14500 batteries with a capacity of 900mAh
Basen BS217A battery, 4000mAh in a 21700 size
Basen BS26003 batteries, 4.5Ah in a 26650 size
Basen 18650 2500mAh 22A batteries
BASEN B30 18650 3000mAh batteries
BASEN 18650 3500mAh batteries, standard and protected
LG HG2 batteries and an interesting experiment
Samsung ICR18650-26F and ICR18650-26H batteries, plus a few notes on other similar models
More high-capacity batteries: Sanyo NCR18650GA
Sanyo NCR20700B, interesting 20700-size batteries
LG INR21700-M50T, high-capacity batteries in the 21700 format
LG INR18650-HG2L, “chocolate bars” in new clothes
Molicel INR21700-P42A, more batteries from E-One Moli Energy
Molicel INR18650-P28A batteries from E-One Moli Energy
Panasonic NCR18650G, really the highest-capacity 18650 battery?
Panasonic NCR18650BD batteries, Tesla in your pocket
LG INR18650MH1 batteries with a capacity of 3100mAh and a current rating of up to 10A
Red Sony/Murata US18650VTC6, “Red Heat”
Samsung INR18650-25R, a timeless classic
Sony/Murata US18650VTC4 batteries, “Die, but not today”
High-drain LG ICR18650-HB3 batteries
LG ICR18650-HE4 batteries
Samsung ICR18650-22P batteries
LiitoKala lii-35A-N, or what's on the other side of the barricades
High-drain Samsung INR21700-40T battery with a capacity of 4000mAh and a claimed current rating of 35A
LG INR18650-M36 batteries claim a record 3600mAh capacity—is that true??
High-capacity LG INR18650-MJ1 batteries and a somewhat unusual “test subject”
Murata US18650-VTC5D batteries, the highest-capacity high-drain cells
A couple more Murata US18650VTC6 cells and a comparison with the previous batteries
Genuine LG INR18650-HG2 batteries and my first experience buying from nkon
Yet more Liitokala NCR18650B 3400mAh batteries
Batteries: counterfeit or genuine? Here's how it happens
High-drain Samsung INR 18650-20S battery
A pair of nearly nameless Chinese protected batteries
Review and test of batteries from nkon.nl: Sony/Murata VTC6
Chinese battery cycle-life test, update 29.03: 450 cycles
Review and test of batteries from nkon.nl: Sony/Murata VTC5A
Review and test of batteries from nkon.nl: Samsung INR21700-50E
Review and test of batteries from nkon.nl: Samsung INR18650-35E
Review and test of batteries from nkon.nl: Samsung INR18650-30Q
Liitokala HG2 battery, or how Chinese sellers rip you off, part 2
More VTC6 batteries, this time with tabs
Testing INR18650-25R batteries from Ali after 3 years
Protected Liitokala 3400 mAh batteries, another batch
Another batch of batteries, this time counterfeit SONY VTC6s
18650 3400 mAh batteries
Batteries for Uniden radios: BP-38, BP-40
NCR18650B 3400 mAh from LiitoKala
LiitoKala Lii-40A 21700 4000mAh batteries
Soshine LiFePO4 batteries, or three plus one
Soshine 14500 Lifepo4 Battery Kit 700 mAh
Another batch of batteries: Samsung ICR18650-26HM
Sony VTC6 batteries, high-current test
Camera batteries: different, yet so alike
Popular Panasonic NCR18650B protected batteries
A few TrustFire 16340 batteries and testing them
TrustFire batteries, and more TrustFire: two TrustFire cells, sizes 14500 and 18350
Several different, yet identical, camera batteries
SANYO UR18650ZY
Another batch of Samsung batteries, this time protected ICR18650-32A cells
INR18650-25R test and the short story of an order
A quick look at a netbook battery, very brief
A bunch of assorted batteries for cameras and other useful devices :)
What awful 14500 and 10440 batteries
NB-4L and NB-7L batteries for Canon cameras
DIY TrustFire 14500 protected 900mAh batteries, part two: continuing the experiment.
Goonk is Goonk, or an intensive interrogation.
DIY TrustFire TF26650 5000mAh 3.7V: testing, a decent result, and a little DIY.
DIY 2200mAh 18650 Li-ion Battery for Power Tool: could be better.
TrustFire TF 16340 880 mAh, or when the result isn't what you expect.
TrustFire 18650 2400mAh: brief, but spot-on.
DIY TrustFire 14500 batteries and a little DIY.
DIY A pair of UltraFire TR17670 1800mAh 3.7V batteries and a little DIY.
Electrical is, you could say, a "young" section.
DIN-rail power supplies aren't included here, since they were added to the power supplies section earlier.
CS-8 eight-channel I/O module for home and industrial automation systems
eWelink single-phase WiFi relay rated for 63 A
DDS238-2 wattmeter, energy meter, and WiFi-controlled relay, rated for up to 65 A
ZUBR-D2-63 voltage relay from DS Electronics
VC-115 voltage relay from Novatek-Electro
OM-110 power limiter relay from Novatek-Electro
EM-126T multifunction WiFi relay from Novatek-Electro
EM-482 interface converter from Novatek-Electro
OB-215 digital I/O module from Novatek-Electro
PEF-321AVR three-phase automatic transfer switch controller from Novatek-Electro
RN-119 voltage relay from Novatek-Electro
EM-130 programmable WiFi astronomical timer from Novatek-Electro
UPS-1000 uninterruptible power supply from Novatek-Electro
RPM-416 electrical parameter recorder from Novatek-Electro
RN-11 voltage indicator from Novatek-Electro
EM-129 WiFi energy meter with protection and control functions from Novatek-Electro
RN-263t multifunction voltage relay from Novatek-Electro
Novatek-Electro PEF-320 phase selector
PEF-301 phase selector from Novatek-Electro
What is an astronomical timer? Another handy little gadget.
DIN-rail voltage, current, and power meter. A powerful little gadget.
Electronic loads
I never really thought there would be so many of them, and there’s at least one more possible use for a panel ammeter-voltmeter.
Atorch DL24EW electronic load
Atorch DL24M electronic load, 600 W kit
DIY Atorch DL24, an inexpensive electronic load with four-wire connections
Learn DIY Power module for a multichannel battery tester
ZH-YU ZB206+ battery capacity tester and how it measures internal resistance
DIY Kit for building a simple 150 W electronic load
DIY Sousim electronic load controller, or another device for using up "excess" electricity
A pair of electronic loads, or my experience buying from Taobao
DIY Power supply inside out, or the control board for an electronic load
Amateur radio, odds and ends, and other useful gadgets
Delta AFB0712SH fans, another attempt
Decent leads for a bench power supply and alligator clips
More fans, or how I bought Sunon
Interesting 70 mm AVC fans
Multimeter fuses, 1 and 10 A
A soft, great soldering iron cable, but......
M3 plastic fastener kit
Colored button caps
Illuminated push-button switches for a 16 mm hole
Frames for assembling battery packs from 32xx0 cells
A couple of types of stranded wire with silicone insulation
A couple of types of 5 mm LED holders
Set of 300 plastic PCB standoffs
Multimeter probes + tip set
A selection of connectors for banana plugs
Universal battery holder with a four-wire connection
HY-510 thermal paste and thermal pad
A radio amateur's helpers: three hot-melt adhesives and one thermal paste
Learn Universal battery holder with a four-wire connection
Enclosed 18650 battery holders, with a switch too :)
Holders for four 18650 batteries
Stars-922 thermal adhesive
3x18650 holders, a mini review
Dual 18650 battery holders
A brief review of BST-706 solder paste
More crimp terminal and insulated ferrule kits for joining wires
Crimp terminal kit for stranded wire
Learn Nickel strips, or what battery packs are made with
A couple of 18650 holders: Keystone vs. Blossom
Single frames for assembling 18650, 18500, and 18350 battery packs
Balance connector with wire
Good-quality holders for 18650 batteries
Frames for assembling battery packs from 18500/18650 cells
Carbide drill bit set, 0.5–0.9 mm: a short review on a sharp subject
DIY Various bits and pieces, or a small upgrade to an engraving machine
K5 Pro, or what to do when you don't have thermal paste on hand
A really useful find, or let's talk about storage systems
Tamiya L6.2 battery connectors
Two types of holders for 18650 batteries
Thermal pad
DIY LG Chocolate flex cable and a small repair.
Learn DIY Paper for making PCBs using the toner transfer method, or how to make a PCB at home.
Radio Components and Modules
74HCT125, SGM6130, and a little about repairing a 3D printer board
Used SPA20N60C3 transistors: something strange
Used HY3708 transistors
FDA59N30 transistors: second attempt
EGS002 board and display for building a pure sine wave inverter
Used FDA59N30 transistors compared with new ones
An interesting, but slightly odd, battery protection board
Universal trigger (cheater) supporting QC and PD protocols
DIY A tiny encoder and restoring an old mouse
KSD-01F thermal switch in a TO-220 package
Learn DIY A few capacitors and how they affect converter ripple
50 Hz transformers, or almost 15 kg of iron in one article
USB galvanic isolation module
DIY USR Ethernet-UART module and a little about how to use it
PSMN020-150W and PSMN040-200W: MOSFETs for linear operation, plus an IRFP260M "bonus"
Adapter for an electronic load to test power supplies with USB outputs
1–47 mΩ, 0.5% current-sense shunts from Isabellenhütte
DIY QC 3.0 controller for repairing a charger
IXTK90N25L2, or how I bought used transistors on Taobao
DIY Samwha BL capacitors, a strange cable, and a little about batch-modifying drivers
20 mΩ 2512 SMD resistors
1604 character LCD
3 W LED arrays in the 2820 package
Nichicon, Epcos, and Elna, or how I bought capacitors on Taobao
DIY FR9888, a synchronous step-down converter IC
DIY TRI1461, another tiny IC for building a DC-DC converter
DIY MP2359DJ, a decent little PWM controller
DIY A large OLED display, or building a powerful power supply, part 2
DIY IRFP250 MOSFETs: review and a little about their use.
DIY ICL7660, another useful little IC.
DIY TV tuner with an LVDS interface, or bringing an old monitor back to life.
DIY SC6038, or a DIY charger for a 7.4 V battery.
Learn DIY MC34063: one of the most common PWM (PFM) controllers, plus a brief look at how DC-DC converters work
DIY CDRH104R inductor assortment and a brief look back at its history.
DIY IC for a Li-Ion battery charger.
DIY AMC7135, or reviving a notoriously bad flashlight.
DIY 2004 display, or when 1602 is no longer enough.
DIY HC- 06 Bluetooth module, or an unexpected turn in the bench power supply story.
DIY 1602 LCD, or stone soup
DIY Rotary encoder, just a decent, ordinary encoder.
Capacitors suitable for use on motherboards and elsewhere.
DIY LED strip, or making do with what you have
DIY The IC and other components of a high-power LED driver.
10 W LED modules, part two.
Capacitor assortment
100 W LED matrix.
10 W LED modules.
Measuring instruments, including kits for assembling them
An inexpensive, decent pulse oximeter
UNI-T UTG932E signal generator and upgrade to the UTG962E
HT-A2 thermal imager with 320x240-pixel resolution
Bluetooth module for the Fnirsi FNB48 USB tester and a brief overview of the software
DIY Modifying the UT181A multimeter's RTC power circuit
New from Fnirsi: the FNB48 USB tester
MUSTOOL X2 Pocket multimeter and clamp meter
ZKEtech EBC-X 0510 eight-channel battery tester
FNIRSI-1C15 mini oscilloscope
ZKEtech EBC-A40L electronic load and battery tester
DIY Finishing the LCR meter build and switching it to battery power
Fnirsi FNC88 USB tester
Inexpensive Sndway SW-T40 rangefinder
DIY Modifications to the EBC-A10H electronic load, part one
Small, simple 60 V, 10 A ammeter-voltmeter
TC66 (C), USB tester with USB Type-C connectivity and a built-in trigger for various protocols
Ammeter-voltmeter with a VFD display and power measurement
EBC-A20, another electronic load from ZKEtech
ZKEtech EBC-A10H electronic load
YR1035, another milliohm meter and an improved version of the YR1030
SIN90S, ammeter-voltmeter with expanded functionality
Panel ammeter-voltmeter, 100 V, 10 A
Small ammeter for currents up to 5 A
Small voltmeters for up to 30–35 V
SNDWAY SW-S70 laser distance meter
Multichannel voltmeter module
Learn YR1030, a milliohm meter for measuring low resistance and battery internal resistance
An infrared thermometer for the home workshop
Power-Z FL001T, or another all-purpose USB meter
ZY1276, an all-purpose USB meter from YZXstudio
DIY VAC1100A ammeter-voltmeter with a measurement range up to 120 V, 100 A, and a little more
Uni-T UT-D07A Bluetooth adapter for UT181A, UT171A, and UT71E multimeters
Small, simple oscilloscope
DIY Advanced XJW01 LCR meter kit
USB tester, attempt number two
USB tester, meter, or just a display??
EONE ET201, a 2-in-1 multimeter, or how a snake and a hedgehog were crossed
DXL360S, dual-axis digital angle finder
OWON B35, an interesting multimeter for careful users
FLUKE - 15B+, reliable, well-made, expensive
DIY Miniature multifunction meter for all kinds of projects
Uni-T UT181A, professional logging multimeter
Multimeters: so alike, yet so different
Thermal imaging cameras: what they are and how they work
ZKE EBC-A10, a multifunctional electronic load with a battery tester
Multimeters come in all shapes and sizes
Another handy little gadget: a compact voltmeter with a 99.9 V measurement range
RLC and ESR meter, or a device for measuring capacitors, inductors, and low-resistance resistors.
DIY Kit for building a popular transistor tester
DIY Kit for building a simple DDS signal generator
DIY Build your own oscilloscope? Really? Yes! DSO138, an oscilloscope kit
DIY Panel ammeter-voltmeter and how to use it.
ACM04, clamp meter with True RMS and DC current measurement.
RZD-60 60-meter laser rangefinder: small but mighty.
Mastech MS8910, for when you want something extra alongside a regular multimeter.
DS203, a decent, compact, and simple oscilloscope at a nice price.
Compact DT8250 infrared non-contact thermometer
NF8108 cable tester: a good tool with an unpleasant catch.
USB thermometer: mixed results
Compact and quite decent VC921 multimeter
Voltmeter with a 0.56-inch display.
Ammeter with a 0.56-inch display, or simply a number display.
Tools, soldering irons, etc.
Worx wu533 cordless circular saw
6.0, 6.35 and 8 mm collets for a router
DIYNY-D08 spot welder controller
Makita battery-powered trim router
Ksger handle for a T12 soldering station, or tips for soldering irons
Two-speed brushless drill/driver
DIY T12 soldering iron controller and a compact soldering station built around it
18 V Makita battery-powered drill/driver
Special alligator clips for connecting to batteries
An interesting soldering iron at a relatively low price
DIY 6Y880 spot welder controller and various other components
A quick look at a small pair of tweezers
125 mm angle grinder for a Makita battery
Spot welder powered by supercapacitors
SH72, a compact soldering iron, or a TS100 for the budget-conscious
DIY Inexpensive kit for building a T12 soldering station
Pigong 8858 hot air rework station and a kit of assorted accessories
Accessory set for an oscillating multi-tool
Worx cordless rotary hammer, or when all you have is a hammer, everything looks like a nail
Raitool trim router, or “file to fit after assembly”
Review of the KSGER 2-in-1 soldering station with T12 tips and a hot air gun
Bakon BK3200 soldering station rated at 120 W
Review of various accessories for an oscillating tool
A decent wire stripping and crimping kit
UNI-T UT387B, a hidden utility detector
DIY Laser engraver with a 10 W laser
STANLEY STSJ6501-A9, also known as the DeWalt DW349, or simply a jigsaw
GORDAK 863, a 3-in-1 soldering station
TL866CS, a universal programmer
MILWAUKEE 2626-20 M18 CORDLESS MULTI-TOOL oscillating saw
STANLEY STDH7213 corded hammer drill
Milwaukee Electric Tool 2607-22CT M18 Hammer Drill Kit
DIY A small CNC router/engraver
A pair of cordless drill/drivers
GJ-8018LCD, a basic hot air gun and a brief comparison
Flexible shaft and holder for a rotary tool
DIY Bakon BK950D, a small soldering station with a T12 iron
DIY Kit for building a laser engraver with a 2.5 W laser
DIY ZONESTAR P802, also known as the Prusa i3, or building a 3D printer from a kit
BX205, a self-leveling five-beam cross-line laser level with a plumb point
An interesting USB microscope
TS100 soldering iron, or a familiar tool in a new guise
A brief review of a small soldering iron and a little theory.
0.6-6.5mm 400W 220V Mini Die Grinder. Or simply, a rotary tool.
A set of assorted attachments for a handheld grinder.
Hakko T12 tips and using them in a non-Hakko soldering station.
Conical drill bits
Audio equipment
Learn DIY Kit for assembling a speaker protection board
Signal level meter with a VFD display
DIY AK4495SEQ + USB converter: building a DAC from a kit
DIY DarTZeel amplifier clone for those who like a warm sound
DIY Kit for building an LM3886-based stereo power amplifier
Learn Stereo volume control with input selector and VFD display
Auxiliary devices and other items that don't fit into the other sections
4S capacitor balancer and a little about how it works
Active capacitive balancer for 6S battery packs
Learn Active balancers for lithium batteries: what they are and why you need one
RS485 module with galvanic isolation for connecting RD60xx series converters
Protection board for 3S battery packs
4S 40A protection board for LiFePO4 and an example of using it in a UPS
Contactless sensor for controlling lighting
Relay module controlled via Ethernet, USB and (surprisingly) RS485
Voltage indicator for 1-7S lithium battery packs
Learn DIY 64x32 LED RGB panels, or how to buy this kind of equipment in China
Learn DIY LED panels and controllers, or how to build an LED display, part two
Learn DIY LED panels and controllers, or how to build an LED display, part one
DIY More LED panels: upgrading a scrolling LED display
Small protection board for 2S lithium battery packs
DIY LED RGB panel, or my first encounter with a scrolling LED display
DIY Battery protection board, or how to rebuild a cordless drill battery
Digital PWM speed controller for a brushed DC motor.
A rather unusual button
Learn DIY 125 kHz RFID reader, or DIY when you least expect it :)
125 kHz RFID key fobs: a mini-review.
DIY USB-RS232 TTL converter: a good product at a low price.
Consumer electronics, including clocks and chargers for cylindrical batteries
Makita Power Tool Battery Charger
An Unusual Power Bank with QC/PD Output up to 22 W and Some Quirks
Another Little Clock with NTP Synchronization and an LED Display
Vapcell U2 Universal Charger
A Simple Clock with an LED Display and NTP Synchronization
EleksTube IPS Desk Clock
Casio WV-59DE-1AVEF Watch
Vapcell S4 Plus Four-Bay Charger with Charging Current up to 3 A per Slot
Osram vs. Gauss: How I Looked for a Halogen Replacement—One Year Later, Things Are Still Bad
DIY A Display for the Start-7231 Clock, or a Nostalgia Post
Digital Clock with an “Analog” VFD Display
Desk Clock with a Large VFD Display and Wi-Fi Time Synchronization
Desk Clock with a VFD Display and Wi-Fi
DIY “A Clock That Doesn't Tick” from China with a Japanese Display
Sony DSC-W800 Camera, or Challenging Stereotypes
DIY LED Ceiling Lights, Part 2: Fixing the Mistakes
Ugreen PB107 Power Bank with a Claimed Capacity of 10,000 mAh
Epilot E4 Power Bank for Four 18650 Cells with Pass-Through Charging
WeLoop Hey 3S Fitness Watch
A Power Bank for 8 18650 Cells, More or Less
iLife A6 Robot Vacuum
ILIFE A4 Robot Vacuum, a Little Helper Around the House
DIY Power Bank and Charger for Four 18650 Cells
RGB LED Strip and Several Controllers
Scales for Very Light Items, 0.001 g–10 g.
Gaomon 860T, Another Graphics Tablet.
FL-4H-LCD-D, or a Charger from an Unknown Manufacturer.
Povos PQ8602, an Electric Shaver from China.
Nitecore i2, a Pretty Good Charger for Li-Ion, Ni-MH, and Ni-Cd Batteries.
Another Set of Kitchen Scales
HUION 1060 Pro, a Pretty Good Graphics Tablet.
UltraFire C2 Cree XR-E, or an Average Flashlight That Thinks It's a Thrower.
DIY A Clock That Doesn't Tick
DIY An Unusual Power Bank That Couldn't Escape a Few Modifications.
A Small Flashlight with a CREE XM-L T6
DIY 4.3-Inch Monitors and a Bit of DIY Hacking.
Spoon Scale, Mixed Feelings.
Universal Air Conditioner Remote (Almost Tactical :)))
A Simple Standalone Smoke Detector, or a Device That Can Really Save Lives.
5 W LED Ceiling Lights
Computer
Orico USB 3.0 hub and USB Bluetooth 5.0 adapter
USB hub for Raspberry combined with an Ethernet adapter
ORICO Chroma CN300 500GB external SSD with USB-C interface
Affordable PowerLink SP402F 4+2-port PoE switch
MechZone dual-band WiFi repeater
Choetech PD 100W cable, 1.8 m long
128GB external SSD with USB Type-C interface
DIY WiFi USB adapter for a T2 tuner and a small modification
Samsung 860 EVO 250 GB SSD
Alfawise 256GB, a quick look at a microSD card
Zheino M3-128 128GB mSATA SSD
Learn What is PoE? A look at a pair of switches
RECADATA 120 GB M.2 SSD
Bidirectional HDMI switch
MIXZA 128GB microSD memory card
A quick look at a small mSATA-to-M.2 adapter
Learn DIY HDMI dummy plug, or how to bring the PIPO X10 back to life
Affordable USB video capture device
KingDian N480 - 240GB, M.2 SSD and an adapter for it
Small four-port USB 3.0 hub from Ugreen
Learn Ezcap 284 HDMI, component and composite video capture device
PTVdisplay DA02, or trying to connect a smartphone to a TV
SanDisk SDDD2, or a two-in-one flash drive
Mele F10 Deluxe, a very handy learning remote
KingDian S280 480GB SSD, just a fast SSD
ORICO 2139U3, a 2.5-inch hard drive/SSD enclosure and a couple of cables
ASUS RT-AC1200GU, WiFi router with gigabit ports
KingDian M280 - 120GB, an mSATA-form-factor SSD
ORICO 9558RU3, or five hard drives in one box
2GB DDR2 Kingston KVR800D2N6, or a quick look at another memory module
Kingston 4GB SO-DIMM DDR3L, a comparison
Netac N5M mSATA, a quick look at a small SSD
Server network PCI card with two Gigabit Ethernet ports
850 Evo, or a 250 GB Samsung solid-state drive
Netac P500 64GB Micro SD, a quick look at a tiny memory card
DIY TP-link TL-WR702N, or my new little helper
Compact Bluetooth keyboard with an interesting touchpad
USB 3.0 Gigabit network adapter
Viboton S1, a decent little wireless keyboard with a Russian layout
USB network adapter, and what I wanted to use it for.
Four-port USB 3.0 hub.
USB video adapter, or almost a graphics card.
ORICO PFU3-2P. Dual-port PCI-Express USB 3.0 card.
USB 3.0 - HDD or what to do with a 2.5-inch hard drive.
SSK 32GB: Not everything with a blue connector is USB 3.0.
Unbranded 32GB microSD.
DIY A decent cooler for the Acer 5720Z and similar models.
A decent compact wireless keyboard, but with a few quirks.
HDMI-to-VGA converter.
Gigabit Ethernet PCI Express network adapter
DIY Motherboard for repairing a Toshiba Satellite L755D laptop
A really cheap Bluetooth adapter.
Bluetooth headset
Video Surveillance
Dahua IPC-HDBW4431R-ZS surveillance camera, or what the competition has to offer
DS-2CD1141-I or another Hikvision camera
Hikvision DS-2CD2085FWD-I, an 8-megapixel surveillance camera
Reolink RLC-410WS: 4 MP, 5 GHz WiFi and built-in memory card
Reolink C1 Pro network pan-and-tilt camera with 2560x1440 resolution
ESCAM Q8 and Sricam SP022 network cameras: so different, yet so alike
ESCAM G02, a pan-and-tilt IP camera with 1280x720 resolution
An inexpensive 1080p IP camera from OWSOO
A pair of 1080p AHD cameras from KKmoon
A pair of AHD 1920x1080 cameras + DVR
Learn A budget kit with four AHD cameras and a DVR, or what AHD-M is all about
ESCAM QD410, a 4-megapixel camera: comparative review
Szsinocam SZ-IPC-7032CSW, a 2-megapixel IP camera
Learn A DVR and four cameras, or what video surveillance is all about
The 4 MP DS-2CD2042WD-I and an updated version of my favorite DS-2CD2032F-I in one review
DS-2CD2032 cameras I like.
Mini PCs and TV boxes
Beelink T4 Mini PC
Beelink GT-King Pro TV box based on the new Amlogic S922X-H
Magicsee N5 NOVA TV box based on the RK3318
Beelink L55, a mini computer with an i3-5005U processor
The surveyor's computer, or simply the Acute Angle AA-B4
Compact DVB-T2 tuner
MECOOL-KIII-PRO, a decent TV box with a built-in T2 tuner
Scishion Ai SE, a powerful TV box based on the Rockchip RK3399
Mecool KM9, a TV box with an Amlogic S905X2 processor
Tanix TX6 TV box, another option based on the Allwinner H6
MECOOL M8S Plus DVB-T2 TV box, a hot one
H96 Max TV box based on the new Amlogic S905X2
Magicsee C400 hybrid TV box with a DVB-T2/S2 tuner
HYSTOU P04 i3-7100U mini PC, or the computer I couldn't overheat
H96 MAX, or let's mod it once, then again
X9T, just a TV box based on the Amlogic S912
EACHLINK H6 Mini, another TV box based on the Allwinner H6
Mecool M8S Plus L TV box based on the S912
Mecool KM8, a TV box with voice control and Certified Android TV
Beelink Gemini X45 Premium with a Celeron J4105 processor, 6GB RAM and 128GB SSD
HYSTOU FMP04 mini PC with an i5-7200U processor
Beelink AP34 Pro, a mini PC with 6 GB of RAM
Alfawise T1, a mini PC with an N4100 processor based on Gemini Lake
Xiaomi MiBox 3 TV box, international version
Tanix TX28 TV box, 4/32, USB 3.0, 5 GHz and RK3328
Alfawise S95, a basic TV box with an S905W
Alfawise A95X R1, an inexpensive TV box
Mecool M8S PRO L TV box, an updated version of the Mecool M8S
MINIX NEO N42C, a small computer based on the Intel N4200
Zidoo H6 Pro, a TV box based on the AllWinner H6
Alfawise H96 Mini TV box based on the new Amlogic T962E SoC
Beelink GT1 TV box, Ultimate version
Wechip V8, an S905W-based TV box, or attempt number two
Z66X Z2 TV box based on the new ZX296716 SoC
ACEPC AK1, or another PC
Tanix TX3 Mini TV box with an S905W inside
Vorke Z6 TV box: what it's really like
Alfawise Z28 Pro, an RK3328-based TV box with 2/16 GB of memory
SCISHION V88 Mars II, a rather controversial TV box
Beelink BT3 Pro mini PC, another one
Beelink M1, a mini PC with an Intel N3450
LAKE I, another TV box with a Realtek RTD1295 inside
Vorke V1 Plus mini PC, or a new version of the workhorse
MX9 PRO, a mini TV box based on RK3328
MECOOL M8S PRO, a very small TV box, or DDR3 vs DDR4
Beelink AP42, another mini PC based on Apollo Lake N4200
Z28, a TV box with the new RK3328
YUNDOO Y8, a powerful TV box
Beelink SEA I, a TV box based on Realtek 1295, with HDMI input
A95X King, a small TV box based on RK3229
PIPO X10, or variations on the desktop tablet theme
VOYO V1 mini PC, the first swallow with Apollo Lake
CHUWI HiBox, a small but unusual computer
Sunvell T95K Pro, a TV box based on the well-known Amlogic S912, but with an original design
HYSTOU FMP06, a small computer based on the Celeron N3150
Vorke V1 mini PC, a little workhorse
Nexbox A95X media player based on Amlogic S905X
MECOOL BB2 media player
YUNDOO Y2, a TV box with the new S912 processor
Mini M8S II, or the Mini M8S with an updated processor
Beelink BT7, a small computer based on the Atom X7-Z8700
Vensmile i10, a small but interesting computer based on the Celeron 3755U
NEXBOX MXQ PRO, an affordable TV box based on Amlogic S905
HYSTOU FMP03, a mini PC with a Core-I3-5010U processor
Sunvell T95, a nice-looking TV box based on Amlogic S905
Mini M8S, a decent little TV box based on Amlogic S905
MX4, another TV box based on the now-familiar RK3229
Mini MXQ, a TV box with the new RK3229
Wintel Pro CX-W8, an affordable Windows 10 mini PC
Onda M2 Mini PC, small, but not Atom-based
MeeGoPad T03 PRO, it's back, but is it any better?
A TV box with the new S905—let's see how it performs
Beelink i68 TV Box 4K
PIPO X9, a tablet and TV box hybrid.
MXIII-G, a 4K + Gigabit Ethernet TV box that needed no modifications
MeeGoPad T02, almost the smallest computer running Windows 8.1
Vensmile W10 - a TV box/mini PC, even smaller, thinner, and lighter
PIPO X7S, Windows and Android—can they live together?.
Pocket P1, a mini PC about the size of a smartphone.
PIPO X7, a Windows 8.1 TV box that can easily replace a small computer.
TV box MXQ S85 Amlogic S805
A decent DVB-T2 tuner at a reasonable price.
CubieTruck, or simply Cubie.
Phones and tablets
Main camera for the Cubot Power and how to replace it
CUBOT POWER, a strange smartphone
Teclast P80 Pro, a brief look at a small tablet
VOYO i8 Pro 4G tablet, 3/64 GB, 10.1-inch
AlldoCube Power M3 4G, a tablet with a 10.1-inch screen
Lenovo P2 smartphone, a high-capacity battery and AMOLED screen
CUBOT Magic smartphone, another Cubot
Vernee Thor Plus smartphone, or what happens when you cross the Thor and Thor-E and add AMOLED
Coolpad Max A8, a decent smartphone with a 5.5-inch screen
Cube iPlay 10, a tablet with a 10-inch Full HD screen
Gretel A7, a decent budget smartphone
Expro x1 by IRULU, a small, modest tablet
VOYO VBOOK V2, an 11.6-inch netbook with an N3450 processor
Vernee Thor E smartphone, the next in the Thor lineup
Cubot Rainbow 2 smartphone
UMI Plus E, a smartphone based on the Helio P20
Teclast Tbook 10 S, a tablet that needs no upgrades
Doogee Y6 smartphone, or yet another Doogee
Cubot Cheetah 2 mobile phone, an honest battery and a healthy appetite
Leagoo T1 Plus, a smartphone with a 5.5-inch screen
Another look at the Leagoo M5 smartphone
Cubot Rainbow
Ulefone U007, a look at another smartphone
CUBE U27GT, a small Android tablet
DOOGEE X5 MAX, an affordable smartphone with Android 6
Vernee Thor, impressions after almost a month of use
Cube iwork8 Ultimate, a small Windows tablet with an Atom x5-Z8300
Teclast X98 Pro, so this is what Cherry Trail is like
Onda V891W, a tablet with every chance of becoming popular.
Miscellaneous
How to protect electronic devices and keep them running when the mains voltage is too high
How to choose an electronic load
DC-DC converters: how they differ and how to choose the right one
A common and dangerous mistake in PCB layout
What is an LCR meter and what is it for?
Something that occasionally comes in for repair: a strange charger
Pure sine wave inverter, or how the Chinese have gotten out of hand
How to charge a battery faster without violating its operating guidelines
Delivery delays, lost parcels, and indifferent customer support? Meest-express is the place for you. Updated 05.01.23
How to choose an adjustable converter
Off-grid power: what to do during rolling blackouts, part 3: batteries
Power supplies: how they differ and how to choose the right one
Off-grid power: what to do during rolling blackouts, part 2: UPSs and inverters
Off-grid power: what to do during rolling blackouts, part 1: power banks
Design mistakes found in switching power supplies
DIY solar power station—is it really possible? Absolutely!
Notes on converting a manual sprayer to battery power
Rulers: unusual varieties
Another little tool, this time a map measurer
An interesting 0–21 mm micrometer
Emulator for controlling a QC/PD power supply
DIY Full-extension stainless steel telescopic slides
Jeep Willys Transporter-6 in camouflage
A pair of cables for connecting audio equipment
Silver marker
ABOXOO ET001 electronic cigarette
Wismec WS-04 atomizer, 1.3 Ω resistance and 8–14 W power
Wismec Active Kit 80W With Bluetooth Music vaping device
Homgeek manual mini espresso/lungo coffee maker
A cute little kitty
Cosmetics organizers and a quick-witted seller
A handbag I liked.
A set of thread, needles, and all sorts of sewing bits and pieces.
A loose striped sweater, or a man's take on women's clothing.
Notes from a heavy smoker, or a few e-cigarette liquids + bonus
ECT CE4W-2, or my first electronic cigarette.
This page was found when searching for:
https://www.kirich.blog/obzory/1054-tematicheskiy-katalog-obzorov-bloga
https://www.kirich.blog/obzory/1054-tematicheskiy-katalog-obzorov-bloga
Discounted products
You may be interested in
Category: Documentation
I decided to start a topic where I’ll collect translations of descriptions and manuals for various...
I came across a couple of coupons for new users and thought they might be useful....
Banggood is having a sale. This might be useful to someone....
Category: ---
Dear blog readers! In this section, you can ask all kinds of questions and discuss technical...
Discounted products
Support the project
All the content on the site and the advice are free, but we’d be grateful for your support of the project and the channel!
Discuss on the forumHave a question or some experience to share? Discuss the article with the author and readers: the forum is a convenient place to share schematics and photos.
Go to the forumOnly registered readers can comment. It takes a minute to sign up, and you can log in with the same account you use on the forum.
Log inRegister



