Electronics and technology blog    /    Page 62

When I ordered a board for my bench power supply, I decided to get a rotary encoder for it too, since the original one was soldered to the board and I really didn't want to desolder it.

I had a small homemade power supply that I used to test and power various little projects. But I built it a long time ago, and it had become outdated both mentally and physically. At first I wanted to buy a ready-made replacement, but “that’s not how we do things,” so I decided to build one myself again.

I spotted this power supply on the ChinaBay website and wanted to take a closer look. Since they ended up providing it to me for free, it would have been sacrilege not to experiment with it. Anyway, more after the jump.

Summer and hot weather arrived unexpectedly once again, and since I’m responsible for a small server room, I wanted a way to monitor the room temperature remotely.

I was looking for capacitors to repair motherboards and various power supplies. I found what I think are some decent ones. More details below.

A while ago, I bought myself a Bluetooth headset. I’d been using an old adapter for years, but it’s pretty bulky, so I decided to get a smaller one.

In some of my reviews, I use a small multimeter as a second measuring instrument. In this review, I want to tell you about my little helper.

I got so into experimenting with LED lighting and modifying light fixtures that when I was offered a product to test, I couldn't resist and decided to try a factory-made LED driver. If you're interested, read on to see how the idea developed.

In my previous review, I wrote about an ammeter with a display. This time I decided to take a look at a voltmeter bought from the same seller.

I’d been wanting to pick up a small ammeter and voltmeter, in a form factor suitable for mounting in a panel or plastic enclosure. I chose them, ordered, paid, and received them—in other words, nothing unusual so far. Now it’s time to take a closer look at what arrived. First, the ammeter.

It all started when I got tired of replacing bulbs in small light fixtures. I decided to get to the bottom of the problem—maybe not forever, but at least for a long time. Read on to see how it turned out.

I've published several LED reviews, so it's time to write about what you can use to power them. This review covers three components (links and prices included), all of which are needed for one purpose: building an LED driver.

Every electronics hobbyist—and plenty of other people too—runs into situations where a small, compact, affordable step-down voltage converter would come in handy. This review is about just such a device.

I’d wanted to get a Bluetooth headset for my phone for a long time, for when my hands are busy at work, and for my computer at home too—just to make chatting on Skype more convenient. I’d been looking at Plantronics headsets, but the outrageous $100 price tag put me off, so I decided to buy one from China. Read on to find out how it turned out.

Just yesterday I posted a review of some poor-quality 10-watt LEDs. Today I received some 10-watt LEDs, bought from a different seller.

I bought this item right at the beginning of my AliExpress days, but I still decided to share my thoughts on this kit. It’s a rather specialized product, but it might come in handy for someone.

It all started when I spotted a lot for a 100 W LED on sale at a big discount in a group-buy. I love gadgets like this, so I couldn't resist.

It all started with a plan to renovate the kitchen, which meant we needed new lights. After looking around the market and in stores, we decided to buy them on AliExpress. Read on to see how it turned out.