Useful and interesting. Page 72

Even from the simplest things, which we do not pay attention to and consider garbage, we can make something worthwhile, unlike anything else. If, for example, you combine an ordinary cardboard box that was already going on a trip to the trash

Today, a very large number of people use contactless passes: at enterprises, in hostels, etc. Such a pass is also called a “tag”. Some of the most common RFID badges have an operating frequency of 125 kHz. By internal

The main advantage of this mini soldering iron is that it is powered by a 3.7 V battery. It is not connected to the network and you can easily take it with you. Of course, its power is not great, but it is quite enough to solder wires or

The cutter is designed for cutting foam plastic 3-4 centimeters thick. The cutter is powered by two AA batteries.This is its main advantage, that you can take it with you anywhere. And cutting foam plastic is now a very necessary thing. Those who arrange weddings or

A mini drill can be used to drill holes in textolite boards for the output of radio elements. I personally built a mini drill for this purpose, but you can use it for other purposes as well.

The method of catching fish with a plastic bottle will not require a lot of effort and time from you to make simple fishing gear. With such a trap you can catch fish in almost all regions and in all continents where there is a river with fish. Everything you need

This is a very simple way to hide the folder with the necessary documents without installing any software. You only need a standard notepad, which is included in all versions of Windows. You can access your folder by

You will never guess what gift life will give you at one time or another. By some chance, anyone can find themselves in an unforeseen situation. For example, when there is no drinking water at hand. This is quite likely to happen if you, say,

Spring and autumn are the seasons when shoes especially often get wet due to frequent rains.Shoes that are not dried can be harmful to your health by causing your feet to become hypothermic. And the shoes themselves will not last long. No matter what happens I

The hiding place is very simple and very secretive. You don't need scarce parts and a lot of time to repeat it. All you need to find is a cigar case. It is made of thin aluminum. And a feather drill. You can borrow this drill - for

A simple detector that will show whether a person is lying or telling the truth. Of course, it is far from a real, modern lie detector - a polygraph, but it deserves attention, since anyone can make it with their own hands. Like

Under the table on which a personal computer stands there is almost always a large number of wires connecting peripheral devices. This is very inconvenient and ugly, and often interferes with normal work. I'll show you an easy way how

This air compressor is very easy to make and anyone can replicate it if desired. The compressor can be used to inflate balloons, for some chemical experiments where it is necessary to create air bubbles in

The simplest thermal power plant is free energy that can be obtained at your home. This mini power plant uses heat from your central heating system.Why free? - Because all the heat stays in your home and nowhere

This method of restoring the surface and removing rust is suitable for those who want to return old steel items to their normal appearance and remove traces of corrosion. Probably many of you have found interesting antiques in your grandmother’s closet, or at

Our life is unpredictable and the least expected can always happen. For example, a water leak may occur in a place that seemed particularly safe. In order to react in time and find out about such a water leak from the initial

This simple little thing, made of PVC pipe, organizes order in those places where there are large accumulations of wires. For example, under the table where a personal computer stands, there are usually several wires on the floor, and this is only for a regular

If you have been thinking about buying an air conditioner for a long time, but are not ready to spend a large sum on this purchase, the master class will be especially useful for you. A homemade air conditioner made by yourself will keep your home cool at any time of the year.

I already wanted to make a really cool hiding place for storing valuables. Which had a wooden insert with an LED light that would turn on when the book was opened. I've always loved the idea of ​​hiding places and secrets, so...

A very simple container with a thermos effect can be made in a short time from a plastic bottle. This homemade product has two functions: a shockproof case for carrying fragile things, such as a camera lens, and a thermal container, such as a thermos,

This homemade product perfectly reflects the modernity of our time. Imagine: you press the remote control button and the TV appears. We looked, pressed the button, and the TV hid. Of course, besides how to brag

The service life of some frying pans is quite limited: some fail after just a year and a half of use. Not everyone raises their hand to get rid of kitchen utensils received as a gift. Don't rush to throw away the pans you use

Never throw away your old jeans, you can make a lot of interesting things out of them. For example, you can sew a cosmetic bag in the shape of a cat. To do this you will need a small piece of denim. Fold the fabric in half and outline the pattern. Then

On sale you can find a variety of things made by skilled people from scrap materials. For example, a very interesting idea is a canister converted into a bar cabinet. Looks impressive and costs the same. At the same time, you can do such a thing yourself, so