In this article I will tell you how to make a simple and reliable version of a contactless key. First, I’ll explain what this key is, the point is that there is a transmitter on a battery and a receiver built into the device we need

If you are a tinkerer and love making crafts, then you have probably often come across video clips that show how to make this or that homemade product. And if so, then you probably know the face of the person depicted in the photo. . .

Jewelry gas welding machine using ordinary water. Hydrogen, when mixed with air, forms an explosive mixture - the so-called detonating gas. The combustion temperature of hydrogen is 2800 degrees. Celsius. It is on these facts that this gas welding is based. basis

I once watched a video on the Internet where they cut ordinary glass with ordinary scissors under water. And there were dozens of comments under the video. Some said it works, others said it was all nonsense. Naturally, in the spirit of mythbusters, I decided

I found a 12 volt power supply at home that was used to charge batteries. He looks like this. . .

I present to your attention a very small Tesla coil on one transistor or Brovin Kacher. In a Tesla coil, a very high high-frequency alternating voltage is supplied to the primary winding, and in a kacher, the primary winding is fed by a collector

A very funny and very simple toy can be made from a thread and a button. Nothing to do, but so many positive emotions. . .

Just a cool toy, and can be used at discos, the design is very simple, we will need: 1 Power supply (phone charger) 2 Cassette drive pulley from a Sonata series tape recorder 3 The motor from the disk drive fits perfectly into

LEDs can be very efficient and economical in long-term use. 10 watt LED bulbs can replace a 100 watt incandescent bulb or a 30 watt compact fluorescent bulb. Despite the relatively high

When working with a soldering iron, many different compounds are released that float in the air, which naturally do not have a beneficial effect on human health. Most radio amateurs work in enclosed spaces and often literally breathe in these harmful pollutants.

The spider robot is a little complicated in terms of moving parts; unlike other robots, it has more than 4 moving supports, that is, legs. A very funny toy that will please anyone. . .

Ferromagnetic fluid is a fluid that is highly polarized in the presence of a magnetic field. In other words, when an ordinary magnet approaches this liquid, it begins to perform certain movements: it jumps up like a hedgehog, sticks to the magnet, rises

Glowing ice does not melt, does not get cold, but glows. Video instructions for making such a glass with glowing ice.

As part of my efforts to make our lives easier through robots, I made an inexpensive cleaning bot. This advanced robot cleaner is great for polishing floors and shiny glass tables (as long as you apply a soapy solution).

Robot - beetle Believe it or not - there is no simpler robot!!! Electronics - 0% Radio components such as transistors, microcircuits and others - 0% What do you need? - a couple of motors, buttons and batteries. Yes, I almost forgot - the presence of a brain and hands :-)

The time of the USSR is a thing of the past and left behind various trinkets that are no longer needed by anyone. For example, you probably have a slide projector or filmoscope in your closet. Nobody needs him anymore, and it’s a shame to throw him away... Let’s give him a second one

The cooler windmill is more of a toy than a real one. It produces 1.5 - 2 volts in a breeze of 4 km/h and at a current of 20 mA, which is quite enough to charge one battery. But you can do more than one, so there is still a prospect. . .

This funny cube adds to our collection of interesting paper toys.A great way to spend your free time, no matter how old you are. You can put it together at school and in the office, everyone will be jealous. Video instructions for production.

This wallet is a very funny thing. These wallets are sold in oddity stores. Looks very funny. And even a child can make such a craft; look at the diagram or video; it’s very simple.

In the article I will tell you about two designs from a regular web camera: the first is a counterfeit banknote detector, the second is an infrared camera that sees in 100% darkness.

Lpt color music is the simplest design of LEDs and resistors connected in series. Manufacturing does not require any knowledge in the field of electronics. Therefore, anyone can make it.

A lot of new things have been discovered in modding over the years. The technology has become more advanced, and modders have gained a lot of experience. But as then, today most often a single sheet of acrylic is used for engraving. But you can work with several. It may

Sitting at the computer in full creative process or playing a game, I was often distracted by my faithful dog with his barking, I had to tear my butt off my favorite chair, go out into the yard and see who was there. . .

Over its almost 300-year history of development, the microscope has probably become one of the most popular optical instruments, widely used in all areas of human activity. It is especially difficult to overestimate its role in teaching schoolchildren who learn