Simple multimedia projector
The time of the USSR is a thing of the past and left behind a variety of trinkets that are now no longer needed by anyone. For example, you probably have a slide projector or a filmoscope in the pantry. Nobody needs him anymore, but it’s a pity to throw away ... Let's give him a second
Generator for a windmill
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
Homemade machines
Homemade machines - 12 photos with a description. In principle, the motor is the heart of almost any machine. And you can get the motor anywhere: a broken washing machine, an old reel tape recorder, a printer or a hairdryer, etc. . .
IR port from COM mouse
Once it was necessary to check the prehistoric (Russian yet) remote control. There were no funds. Rummaging in the Internet, I found several ideas. I was struck by the idea of making a simple IR port from: mice! Computer, of course. We will start with this device.
Jammer for the TV (Pig)
Sometimes it becomes necessary to make a big noise for the TV and radio range. For example, your wife watches "Do not be born beautiful," and you need to see the Champions League. For this purpose, use special devices - "Silencers" or popular
Microscope without lenses.
Over its nearly 300-year history of development, the microscope has probably become one of the most popular optical devices widely used in all areas of human activity. It is especially difficult to overestimate its role in the training of schoolchildren who know
A selection of simple and effective schemes.
The first scheme is the simplest multivibrator. Despite its simplicity, its scope is very wide. No electronic device can do without it. . .
Polygraph.
The following practice shows that lies and the rejection of guilt by criminals are associated with various physiological phenomena. Before, this is an increase in the pressure of the blood, a change in the moisture of the skin, as well as inadequate ingestion of saliva,
Ultrasonic washing machine
An ultrasonic washing machine is intended for washing clothes with the help of sound vibrations created in the washing solution, the frequency of which is close to ultrasonic. The features of the trigger are that when washing there is no mechanical friction of the laundry,
Air-hydraulic rocket
The air-hydraulic model is one of the simplest in rocket modeling. It is characterized by simplicity of design and operation. This model makes it possible to conduct many different experiments and, most importantly, get acquainted with the action
Smoke generator
Today it is difficult to imagine a modern disco without various lighting effects - laser light music, strobe lights, color music scanners, and it is also difficult to imagine these same lighting effects without the use of smoke generators. . .
How can I use the compressor from the refrigerator as an airbrush
Most people in garages and barns can find an old refrigerator. Why store? unknown! If you are one of those, then I suggest using this hardware in business. . .