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Around March, readers sent me a link to a rather interesting product. And since it’s right up my alley, I ordered one for a review—to try it out myself and show it to everyone else, as they say.

Surely every radio amateur, and not just radio amateurs, gradually accumulates lots of different components, fasteners, and all sorts of other small bits and pieces. And all this stuff has to be stored somewhere, preferably not in one big pile. For this, people use either whatever they have on hand, such as matchboxes assembled into large organizers, or storage boxes bought for the purpose. Today I want to tell you about one such box.

I’ve already reviewed one of the boxes from the Gearbest sale, but there were two boxes, so today I’m reviewing the second one. In fact, this TV box was ordered first, but due to shipping quirks, it arrived second. We’ll take it apart, test it, and analyze it.

I’ve already told you about the kit for building a 3D printer, and today I want to tell you about my saga of building a laser engraver. It didn’t all go as smoothly as I’d hoped, but I did get a positive result in the end. Anyway, if you’re interested in little desktop machines, read on. I hope you’ll find it interesting.

Memory cards are among the most popular products bought from our online stores and from stores in China. They’re used in tablets, media players, phones, camcorders, TV boxes, and so on. So when I was offered the chance to try out a new memory card, I didn’t hesitate much—it was sure to come in handy. So, here’s a brief look at a small memory card.

I finally got around to trying out an unusual SEPIC converter (or so I thought at first). It’s unusual, at the very least, because it uses just one inductor, whereas a conventional one always uses two (or a coupled inductor).

Before New Year, readers asked me to review a couple of converters. Well, it wasn't really any trouble, and I was curious myself, so I ordered them, received them, and tested them. I was actually more interested in a slightly different converter, but I still haven't gotten around to it, so I'll cover that one another time. Today, though, I'm reviewing a simple DC-DC converter rated for 10 A.

Today I’m reviewing another kit that lets you build a multichannel voltage converter. Some time ago, at readers’ request, I ordered several different voltage converters. I chose the one I’m reviewing today myself, just out of curiosity—I wanted to see what it was, and thought it might come in handy for someone. Photos, schematics, tests—everything as usual :)

Many of you have probably heard the name thermal imager. Some of you may have seen one in movies or various technical programs, but I doubt many people know what it is or how it works. In this review, I’ll try to explain in plain language what this device is. As always, I’ll cover everything: a description, a short test, and a teardown.

This review continues the previous one, but since doing two reviews in a row about the same product would be somewhat illogical and inappropriate, at least the opening will focus on one of the interesting parts I bought for the future power supply.

I recently posted a review of video cameras, and today's review is about a little helper that makes setting up IP cameras easier. The helper is a slightly modified compact TP-Link TL-WR702N router. Anyway, if you're interested in making something useful yourself, read on. I hope you'll find it interesting.