DIY electronics. Page 12

A simple, and I hope interesting for you, circuit for LED automation. The LED will turn on and off automatically depending on the lighting.

An ultrasonic washing machine is designed for washing clothes using sound vibrations created in the detergent solution, the frequency of which is close to ultrasonic. The peculiarity of USM is that there is no mechanical friction during washing.

An electrophore machine assembled from CDs and 2 coolers. Produces about 20,000 Volts, which is limited by the distance of the gaps between the plates of the disk capacitors. Photos and description of assembly. Easily repeatable device.

Many people know about the existence of voltage in telephone wires (about 60 volts), but few have thought of using it for their own purposes. After all, this energy is free! You can, for example, power a desk lamp.Maybe someone is the smartest

To build an electric motor you only need a few things. 1. Battery (or any other small source of energy) 2. roll of wire 3. electrical tape 4. 2 pins or paper clips (you can use other objects or make holders from

Converting a regular light bulb into an LED light bulb. The photo shows examples of manufactured holders for LEDs. Using this technology, it is possible to produce a holder of any shape for LEDs of various sizes and with any number of them.

Many modern mobile phones, smartphones, and PDAs can be charged from a computer's USB port (cable included). But, for example, Nokia smartphones have a separate charging connector, therefore, they cannot be charged in this way. For those,

Electric bicycle - the name speaks for itself. The article describes this very Electric Bicycle

If you are in complete darkness and think that no one can see you, then you could be wrong! This article describes a device that can be used to see in complete darkness. It is not that complicated and quite repeatable. . .

For our battery we will need: - lemon - a piece of copper - a piece of zinc That's all. . .

I didn't think anything good would come out of a glass bottle.It turns out that you can make an awesome lamp or night light out of it. . .

Very often there are situations when the battery on the phone is dead, and there is no socket at hand. Or YOU know that, for example, on the road you will have nowhere to “recharge”.

I will tell you how to make color music using LEDs so that it is multi-colored. ..

Sometimes there is a need for an autonomous, inexpensive security alarm, for example, for protection in a country house. The use of industrial designs in such cases may not be economically feasible.

Here is the simplest and most primitive electric motor, i.e. a converter of electrical energy into mechanical energy. . .

Robbers and other criminals are becoming smarter every day. Many people, like me, do not have an alarm system. And if you are not at home, then your valuables become easy prey for a criminal.

It turns out that the laser system is just as simple. Here I will tell you how to make a laser machine called a Spirograph!

Want to feel like a spy? This device will help you eavesdrop on a conversation through the wall. An indispensable thing for a spy.To make it, you will need: a medical stethoscope (sold in a pharmacy for about 300 rubles) and two cheap microphones from

Another rather dangerous experiment. Under no circumstances do this alone. Only under the supervision of professionals. You connect the lead from a pencil to a car battery, and you get a flashlight. But if you connect it incorrectly, everything can burn out.

Many people end up with old unnecessary parts after a small computer upgrade. And if one of them is a DVD drive, then rejoice, you have found an excellent use for it. Make it a powerful laser that can light a match and pop balloons! To you