DIY do it yourself
Master classes, instructions, useful tips, recipes.
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Master classes:

Repair failed LCD

This instruction manual will show you how to repair a liquid crystal display with dead rows or columns. An old phone is taken as an example, but the principle is also suitable for other devices. Usually the display is connected to the controller through a flexible

Polycarbonate Solar Collector

I saw a lot of different technologies and methods for manufacturing solar water heaters on the Internet and decided to share my own experience. I think this project is very successful, since literally every centimeter of the collector surface is in direct

Universal Battery Discharge Indicator

Not a single portable electronic device, be it a portable speaker for the phone, the phone itself, the player, etc. not complete without battery. The lithium-ion batteries with a nominal voltage of 3.7 volts are very popular now, they

"Reanimation" of the car amplifier

Budget car amplifiers made in China are usually not very reliable. Although they are assembled according to traditional schemes, which are also used in the devices of serious manufacturing companies, the “Chinese” often save on

Wind generator from HDD and washing machine pump

A simple wind generator can be made from several failed hard drives and a water pump from the washing machine. Alternative energy is closer than it seems, trash is now more than enough for the manufacture of such necessary gizmos. Such

Workshop floodlight

When working with emery, there is always a lack of light. I close the garage light with my body and a shadow appears on the workpiece. Originally used a carry, even used a headlamp. Nevertheless, I decided to facilitate the task and make constant lighting.

Ultrasonic fog generator

I don’t argue, it would be faster to buy a ready-made ultrasonic humidifier, but it turned out for me on spare parts that it came out by itself. In the article I will show how and what I made it of, and in the end, I will tell how I would make it now, based

Eternal Flashlight in Kinder

Having a very energetic dog that runs without a break for the ball, we decided to use this by making such a device to keep some of the energy when jogging. We will make a keychain on the neck with an LED. In the morning on a walk it will be charged, and

Beginner ham radio power supply

Many of us have accumulated various power supplies from laptops, printers or monitors with a voltage of +12, +19, +22. These are excellent power supplies that have protection against both short circuit and overheating. Whereas in home, amateur radio

How to make a huge LED

Have you ever held a huge LED, the size of a human fist? Of course not, because there are none. I will show how to make such an original little thing with my own hands.This LED will look exactly like its small

How to connect a star-delta motor

One of the significant shortcomings of powerful asynchronous electric motors is their “hard” start-up, which is accompanied by huge initial currents at this moment. As a result, a large power surge appears in the network. Such "failures" may

Reliable laboratory power supply

I have an adjustable power supply. Only voltage is regulated; accordingly, there is no current adjustment. For some purposes it is enough. I decided to assemble a unit with adjustable current and voltage. Laboratory power supply, then LBP, very

How to make a night vision device

Hello! This composition is on my table. And what do you think is all this for? Yes, yes, I decided to assemble a night vision device. Say to watch owls at night. It seems to me very interesting.

100 Watt do-it-yourself lamp

Powerful over bright LED light sources have now become popular and available. The advantages of LEDs are that their service life is much longer - up to 20,000 hours, and not for 1,000 hours like ordinary incandescent lamps. Also led modules

LED acoustic flasher

On the Internet there are many different schemes of LED flashing lights - simple, complex, with and without microcircuits. But now you won’t surprise anyone with an ordinary flashing LED, so there is a need to assemble something more advanced. For example,

Powerful linear voltage regulator

To power various electronic devices and do-it-yourself circuits, you need such a power source, the output voltage of which can be regulated over a wide range. With its help, you can observe how the circuit behaves with one or another

Flush Detector

Quite often, residents of apartment buildings need to fix a picture, a hanger, a shelf, or some other piece of furniture on the wall of an apartment. To do this, mark a point on the wall and drill a small hole

Battery trash desulfator

Hello! It is quite possible to make the simplest desulphator of old and unnecessary things in about 15 minutes, unless of course you know what and what to do. Any normal radio amateur, for any, has a lot of all kinds of electronic trash. And if you scratch on

The most reliable relay for turn signals

As you know, all modern cars are equipped with direction indicators, which are a light or LED flashing on the left or right side of the body. Sometimes a standard electromechanical relay fails, and get a powerful

Homemade hydroelectric power station from an old washing machine

I was always attracted by getting free energy from natural resources. And somehow, I had the idea to create a simple mini-power plant that would generate electricity from a passing water stream. It all started with an idea

Connecting a three-phase motor according to the star and delta circuit

The conductive windings of the electric motor are displayed in a junction box. The findings of the windings form two parallel rows, each with a marking from the letter C and numbers from 1 to 6. This is done in order to mark the beginning and end of all three windings.

Stable radio bug

A radio bug is a simple radio transmitter with a microphone that picks up the smallest sounds around you and transmits them through a radio wave.Thus, leaving such a device in a suitable place, you can listen to everything that is done around it.

Induction metal heater

Induction heater allows you to heat the metal up to redness, without even touching it. The basis of such a heater is a coil in which a high frequency field is created, which acts on a metal object placed inside. AT

Class D simple amplifier

As you know, audio power amplifiers are divided into different classes. Amplifiers working in class “A” can provide decent sound quality of music due to the high quiescent current, but they have extremely low efficiency, they consume a lot of current
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«Do it yourself - do it yourself"- a site of interesting homemade products made from improvised materials and objects at home. Step-by-step master classes with photos and descriptions, technologies, examples of work - all that a real master or just a craftsman needs for needlework. Crafts of any complexity, a large selection of directions and ideas for creativity.

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