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Today I have another review of another power supply. I realize I may have already worn you out with these, but several readers asked me about this one, and I was interested in it myself, so I went ahead and bought it. The review will consist mostly of photos and a little text. In addition to the tests, I’ll also describe a simple method for testing a PSU relatively safely while it’s operating at a temperature close to its limit.

I use power tools often, and it just so happens that quite a few of them are battery-powered. But this is the first time I’ve tested a cordless rotary hammer, so I’m doubly curious to see what it’s like. As usual, we’ll take a look, take it apart, and put it to the test.

I have a real soft spot for gadgets with vacuum displays. When I saw something like this in one of the comments, I got excited and decided to buy one for myself. The only difference was that the one I saw had a few extra “bells and whistles,” like a clock and something else, but I just wanted an indicator—and I found one :) A short review of a large indicator with a “warm” display.

Today I'm reviewing a rather interesting and useful device, if it weren't for a few "buts" that slightly spoiled my overall impression of what is, all things considered, a pretty decent piece of hardware. I'm talking about an eight-channel relay module with remote control over Ethernet.

Another batch of holders for 18650 batteries arrived recently, so I decided to put together a short review in case it comes in handy for someone. I've reviewed similar holders several times before, so this one is more of a follow-up to the previous reviews.

Somehow, despite having more than 35 years of experience with a soldering iron, I had never used soldering paste, although I’d heard a lot about it. So I decided to fill that gap by picking up a tube of one product from this large family for review: Best BS-706 paste. If you’re interested in my first attempts at using soldering paste and what I thought of it, come on in.

Today I’m reviewing another TV box from Mecool, built around the long-familiar S912 SoC. There’s nothing unusual about it, except for a slight sense of déjà vu that stayed with me while using the box, especially when inspecting it. Why? Read on for the review, which, as always, includes an inspection, a teardown, a few tests, and my conclusions.

I’ve already posted a review of a very similar device once before—the title was almost the same, too. This time, though, the little meter is a bit cheaper, and its quality is definitely no worse than the previous one. So, here’s a quick review of a useful little gadget for electronics hobbyists.

GearBest is having a sale on an interesting TV box model built around a Realtek processor.

Power banks are pretty rare subjects in my reviews. Somehow, I hardly ever use them in everyday life, but when I was offered the chance to review one, I decided not to turn it down. As usual, this review covers the exterior, teardown, tests, and conclusions.

I sometimes order small meters for battery packs, and I finally got around to testing them and writing a mini-review. A look at the device, a few tests, and some conclusions. I hope you find it useful.

I ordered this meter quite a while ago from a different store, but after browsing AliExpress I found a listing for a device that looks exactly the same. Since I'm almost certain they all come from the same basement large factory, here's a link to another store.

I've had this display lying around for quite a while, but I've only just gotten around to writing a review. I probably won't have much that's new to say, since this type of display is so common that it's hard to find a radio hobbyist who hasn't heard of it. The only difference from the popular 1602 and 2004 models is that this one has 16 characters across four lines.

Many of my readers know how much I enjoy writing power supply reviews. It’s probably my favorite topic. But today’s review will be a little different from my usual ones—and for good reason, it’ll be short. So, if you’re interested in switching power supplies, come on in.

This story began quite a while ago. First, about four and a half years ago, I bought several LED lights that had worked pretty well all this time. Then one of them finally failed. Since I didn't want to replace them all, the obvious decision was to repair it and, while I was at it, put together a "repair kit" for the others, which were still working.

About six months ago, I reviewed a Mecool TV box with voice control. Today, I’ll show you a very similar, though different, TV box from the same company with roughly the same features. As always, the review will include an inspection, teardown, tests, and a summary table.

Not long ago, I posted a review of a somewhat unusual electronic cigarette from Wismec, and mentioned that I’d ordered some atomizers for it. I liked a particular type of heating element, and I also found out that they’re hard to find in local stores, so I decided to order a few as spares from AliExpress. Anyway, here’s a short review with plenty of photos.

For some reason, there are very few reviews of power supplies like this. That’s understandable: buyers are usually more interested in high-power models than in little units rated at just 3 W. But compact models are sometimes exactly what you need for various low-power devices, especially when they’re highly reliable. Today I’m taking a look at just such a power supply, made by Hi-Link.