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A few words about power supply in difficult conditions, briefly, and as a preview.

A while ago, I came across a review of a fairly basic pulse oximeter and thought, why don't I have one yet? So I ordered one. A brief look at the purchase and a few conclusions.

I’d already been asked about this device, and that’s exactly why I ordered one—to get a hands-on look at it. This time, I’ll be looking at a power limiter for connected devices. It can help when the combined power draw of the connected loads might exceed the available power limit.

Another device from Novatek, and this time we're looking at an interface converter—in this case, from RS-485 to WiFi, with data transmission over the MODBUS-TCP protocol. As always, we'll take a look, take it apart, test it, and draw some conclusions.

I think the vast majority of people reading this have used a computer mouse. Like any device, mice sometimes break, but sometimes you can give them a second life.

Today I have an ATS on my desk—short for Automatic Transfer Switch. In simple terms, it’s a device that automates the switch from the main line to a backup line if a problem occurs with the main supply. And since this is a microcontroller-based device, it naturally offers more features and capabilities, which is what I’ll cover in this review.

It all started when the battery in my old Q&Q “cuckoo” watch began to run down. When I went to check what kind of battery it used, I noticed cracks had appeared in the case. In the end, a crack in the case of my old watch led me to buy a new one, which is what I’m going to tell you about today.

Today I'm reviewing a timer that looks quite ordinary, but can do more than simply run for set time intervals: it can also switch according to sunrise and sunset times, which can be more convenient than a conventional photocell relay in some situations.

This post isn't an ad or a promotion; it simply covers new products that have gone on sale. Today I'll tell you about some interesting desk clocks that were released not long ago.

At the end of February, I reviewed the PEF-301 phase selector relay. As I wrote then, I’ve been using these relays for a long time and am completely happy with how they work. But now a newer version, the PEF-320, has landed on my desk. The key difference is that it can’t control external contactors. More details, as always, in the review.

Even while writing the title, it felt a little unusual to describe a cable as “100 watts.” I’m more used to cables being rated by current, voltage, or wire gauge—but by power? Anyway, read on for the review and test of this 100 W PD cable.

I needed full-extension slides for one of my projects. They’re used all the time in ordinary furniture, and of course I would have just gone out and bought some at a store, especially since they cost around 2–5 dollars there. But there was a problem: I needed stainless steel slides. More on that in the review.

When I started writing this review, I spent a while wondering whether to classify this device as an SSD or a flash drive. In the end, I decided it was more like an external SSD than a flash drive. You'll find out why in the review, which also includes a look at the device and some testing.

Several times, people in the comments suggested I branch out from my usual review topics—power systems, computers, and TV boxes. That was part of the reason I agreed to review a product that’s way outside my usual territory: an RC car. The other reason? Well, how could a 45-year-old boy resist the temptation to race an RC car around the floor? :) Warning: heavy traffic!

I was offered the chance to try out an audio cable—not taste it, of course, but try it out in the general sense. I thought, why not? A cable is a useful thing and is sure to come in handy around the house. So today I’m reviewing two cables: a regular one with wires and an optical one.

Today I have not even a micro-review, but more of a nano-review, and it’s about a marker. Yes, it’s almost an ordinary marker, except that it writes in “silver.” Of course, it isn’t real silver, but the color is similar :)

I have a clock at home, and it has served me for many years. But since nothing lasts forever, my clock has started to show its age too. I just couldn't bring myself to throw it away, so I decided to give it a second life. That's what I'll tell you about today.

In today’s review, I want to show you various types of sockets that, in my opinion, are perfect for all kinds of power supplies and electronic loads, even though they were originally designed for use in audio equipment.