To make devices for drilling boards, I do not use purchased cartridges and other parts is very simple. I have drilled more than one hundred holes in home-made circuit boards with such a drill from a motor in my time. Time spent making this

In everyday time, people often use gadgets (smartphones, tablets, etc.), but when going somewhere on the road, we constantly need to charge our phone. This problem will be solved by Power Bank which can be manufactured in an hour and a half from the available

When you need to protect an object, people come up with different methods of protection. They put padlocks, put code locks, put howlers. I decided to make my contribution to such devices. More precisely, I came up with an actuator. They, in turn, can include

Country and country life is full of unforeseen surprises. They either turn off the gas, or shut off the water, and then the electricity suddenly disappeared somewhere. A dull and boring pastime will help brighten up the stand-alone LED lamp, which you can make in

Hi friends, today I’ll tell you about a guitar gadget circuit with distortion effect. The project is quite simple, I recommend it for beginners in soldering.

Many probably have a problem with charging a Li-Ion battery without a controller, I had this situation. I got a dead laptop, in the battery 4 banks SANYO UR18650A were alive. I decided to replace the LED flashlight instead

Have you ever wanted to check your radioactivity? Or maybe you wanted to prepare for a nuclear Apocalypse? Then this master class on manufacturing a Geiger counter is just for you. I will show you how to make a very simple and cheap counter.

The scheme presented in this article is very easy to repeat and should not cause any difficulties in assembly. It can be used in various devices for sound alerts. For example, alarm, sound dubbing

Anyone who has ever wondered “why a battery breaks down” knows that most batteries fail because of plate sulphation. All lead-acid batteries are susceptible to this phenomenon. I was surprised at the simplicity of working on

A very simple third-hand soldering fixture is fairly easy to assemble from several common components. You will need only 15 minutes and you will have an easy-to-use device, with which you not only no longer

It has long been proven that flat antennas are good at receiving frequency modulated terrestrial digital broadcasting signals based on COFDM technology. From this I had the idea to make a simple outdoor antenna from a plastic pipe and metal

This is a short workshop on how to make a relatively small, inexpensive, and fun smoke machine that you can use for practical jokes, magic tricks, air flow research, and anything else that comes to your mind.

Converting an old fluorescent lamp into an emergency LED garage lamp. Such a very practical and economical lamp will probably come in handy in any garage, especially in one where electricity is often cut off. You can use at home, because

A self-made device on one transistor can be made by almost anyone who wants it and makes little effort to purchase very inexpensive and not numerous components and solders them into a circuit. It is used for

According to statistics, most of the batteries fail due to the sulfation of the plates. For what reasons this phenomenon occurs, I will not particularly go into it, but in a small part this is due to improper operation of the battery. And in

When a CNC machine and modern power tools are available, it is not so difficult to make a transparent case of wood and plexiglass for the power supply (and other products) with your own hands. But how to get out of a situation if such equipment

For almost a year now, I began to replace all the lamps in the house with LED ones. The results pleased sometimes more, sometimes less, but one case led me to an interesting solution. Often did you or someone from your family accidentally overturn the table

One fine moment, taking my screwdriver out of the storage room, I found that it was not working. The batteries were discharged, the first thing I thought and put the screwdriver on charge. But as soon as I connected the charger to the battery, it immediately

Today I will tell you about a wonderful idea how to make a third hand for soldering with your own hands. This device will greatly facilitate the soldering process. The soldering holder will ensure the fixation of objects when working on precise projects. It's soldering

Good afternoon! Today we will focus on the original night light, which will serve as an excellent decoration for your windowsill. So let's get started! Based on a conventional 100-watt incandescent bulb.

Nowadays, reliability and practicality are appreciated. More and more electronics are being made on Li-ion batteries. Although the devices are more expensive than on the same lead-acid or Ni-cd battery. I decided to modify the old flashlights with lead acid

When a laser printer is available, the hams use a PCB manufacturing technology called LUT.However, such a device is not available in every house, because even in our time it is quite expensive. Yet

To use the power transformer available in stocks, it is necessary to find out its key characteristics as accurately as possible. There is almost never any difficulty in solving this problem if the product has been marked. Required

The more I learn about the modern elemental base, the more I am surprised at how easy it is now to make electronic devices that you could only dream of before. For example, the antenna amplifier that will be discussed has a working