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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.

Just recently, I came across a review of 3.3 V linear voltage regulators. I even joined the discussion, and at some point the topic of powering devices that run on 3.3 V from a lithium battery came up. Since this topic overlapped with one of my upcoming reviews, I decided to do a little experimenting myself.

In today's review, I want to tell you about a rather useful device: a universal voltage converter. What it is, how it works, and what it can do—as always, read on.

Continuing my series on electronic kits, this time I want to tell you about a device that can add to a beginner radio enthusiast’s collection of test equipment. It’s not really a measuring instrument, but it definitely helps with measurements.

Many of you already know that I have a soft spot for all kinds of power supplies. This review is two in one: this time, I’ll be looking at an electronics kit for building the core of a bench power supply, as well as a real-world implementation of it. A heads-up: there’ll be lots of photos and text, so stock up on coffee :)

Today I’ll write not only about a product I tested, but also about how sometimes you plan one thing and, for some reason, end up with something completely different. Anyway, if you’re interested, read on.

This is the fourth article in a series about building a rather specialized device: a powerful electronic load. I’d been planning to publish it for a long time, but somehow never got around to finishing the device.

I needed some powerful MOSFETs for one of my future projects. Of course, I could have bought them locally, but they cost almost three times as much here as they do in China. Since counterfeits are sometimes a possibility, and I could get them for a review, I decided to give them a try and test them while I was at it. There won't be any teardown, but there will be a build :)

Some time ago, I came up with the idea of building a simple but useful device. I had everything I needed at home, except for an ammeter-voltmeter, so I ordered one, received it, and started building what I had in mind. More after the jump.

With this review, I’d like to continue introducing readers to all sorts of useful electronic components. Reviews like this don’t come along very often, but I hope they can be useful too. Anyway, as always, the rest is after the jump.

I felt like adding a TV to the bedroom. In this situation, an ordinary person would go to the store and buy a new TV. But that didn’t interest me, and it seemed too easy, so I decided to build a TV myself—well, almost build one :) If you’re interested, come on in. I hope I won’t disappoint.

Recently, single-board mini computers such as Cubie, Raspberry Pi, and the like have become quite popular (in certain circles). But sometimes enthusiasts use these devices to build NAS storage, torrent downloaders, or something similar. These applications usually use high-capacity 3.5-inch hard drives, which in turn require two supply voltages: 12 V and 5 V. This power supply was intended for just such an application.

Somehow, I got sidetracked from reviewing the various DIY projects that are my usual subject. In this review, I decided to make up for that. So, here it is: a charger with balancing for a battery made from two lithium cells.

I got a similar power supply, and naturally I wanted to see what they have in common and what’s different. I’ll also share my own power supply design. If you’re interested, read on.

A while ago, I published a review showing how to build a PWM regulator using a KR142EN5A. I also mentioned one of the most common and probably cheapest controllers for DC-DC converters: the MC34063. Today, I'll try to add to that earlier review.

And so, my brief run of bad luck in experiments with various batteries has come to an end. As usual, I ordered the battery for a specific purpose, but read on to find out what it was and about the battery itself.

I'm almost certain that many seasoned radio amateurs recognized the title of an article published way back in 1988. Back then, these electronic clocks were sold as kits for home assembly and cost quite a lot: 16 rubles (and the most interesting thing was that the display alone cost even more). Many people probably got into building these clocks and tinkering with them, and I was no exception. If you're interested, read on—I think you'll like it.

I've mentioned a few times that I also install video surveillance systems. So I decided to order this unusual power bank to help me out. What it is, why I got it, what's inside, and what can be done with it—read on.