This programmer is one of the simplest and most common. It contains a minimum of detail and is easy to repeat. . .

So, an arc discharge is one of the most beautiful manifestations of electric current in gases. An electric arc is not only beautiful, but also useful, it is used for welding metals, a huge temperature also arises around the arc and the air starts very bright

This indicator will inform you in time that your battery is low. The main advantage of the proposed scheme is the clarity of operation. In other words, the signal LED lights up immediately without a smooth dimming. A plus

Blocking - a generator is a generator of short-term pulses repeating at fairly large intervals. One of the advantages of blocking generators is comparative simplicity, the ability to connect the load through

I think many wanted to collect such a cube, but not everyone had the opportunity to purchase a microcontroller (MK), and not everyone knows how to program. Therefore, here is an alternative. . .

A very beautiful Christmas tree can be made if desired. And it is unlikely that anyone else will have one. You can even give this device to someone. The principle of the Christmas tree is quite simple.

LEDs can be very effective and economical in long-term use. 10 Watt LED bulbs can replace 100 W or 30 W incandescent bulbs with a compact fluorescent lamp. Despite the relatively high

Almost every radio amateur faces the problem of an overheated soldering iron when the tip is heated more than necessary. Soldering with such a soldering iron is not very convenient: the solder begins to change color, covered with an oxide film, the flux instantly evaporates or

There are many ways to make guitar pickups. I will tell you about the simplest one that requires minimal knowledge in radio engineering.

Alkaline batteries last quite a long time, but when their charge drops below one volt in most devices, they become useless. Usually such batteries are thrown away. I suggest using battery energy more efficiently and crafting

This article is not a guide on how to install the sensor, but rather how to upgrade it yourself for home use. Now motion sensors are sold absolutely ready for installation. In addition to the motion sensor itself, it has a built-in light sensor and

There are times when you need a small-sized light source or light source will not be at hand. This mini flashlight can come to your aid. It can be made in a short period of time from available parts.

An electroscope is a simple indicator device for determining the electric charge. It is very simple to do at home with your own hands. To do this, we need a piece of foil and a jar with a plastic lid. . .

A clock - a night lamp - is a great thing for those who like to wake up at night. Usually people wake up in the middle of the night and frantically search for their mobile phone to see the time. Our craft kills two birds with one stone: this is the backlight and a nightlight. Quite light

The role of our plasma ball will be an ordinary incandescent lamp, but the high-voltage source of high frequency is quite simple. In addition, from our source it is possible to build not only a plasma ball, but also demonstrate beautiful experiments with

The principle of operation of the Van de Graaff generator is very similar to the principle of the Wimshurst machine, but instead of rotating disks, it uses a moving belt on two pulleys. The belt is electrified from friction on the lower pulley (in large machines it

We have already talked about how to use a stepper motor as a generator generating electric current. In this homemade product we will use a stepper motor as a bicycle generator.

This is a simple sensor, given its sensitivity! I decided to use a small ionization chamber with a current amplifier built on a composite transistor as a sensor. This circuit really works well after 5-10 minutes,

If you, at least a little familiar with electronics, you know - that the LED from a single battery voltage of 1.5 volts will not light. The LED does not have enough voltage. And how then to make a miniature flashlight on one battery? - Simply . . .

Sometimes in the dark it’s hard to find the switch. To facilitate this work, I propose to incorporate a backlight into it. We will need three radio components and a little time. . .

At the writing of this article, I exploited the great interest of users in the design of a USB refrigerator assembled on a Peltier element. In the article I want to tell you in more detail about the use of this element in history, life and in practice.

Most builders of wind turbines face a problem - where to get a generator? The usual type of car or motorcycle will not work, because they need high revs. Today we will manufacture a generator specifically for a wind turbine. He is simple

Jacob's ladder - two electrodes are located, located as in the figure. It is most likely the most beautiful application of an electric arc :))) And it works like this: an arc appears in the lower part of the electrodes, the air around it heats up and

Of course you will not weld with such a welding machine in everyday life, but in a hopeless situation you will certainly help out. And besides, I have not yet seen a simpler device. . .