Now the market is full of chargers. Automata and not, with and without capacitance measurement. Most chargers are universal and can charge elements of any chemistry. Lithium ion and lithium polymer are increasingly being used in different devices.

I made myself a charger for four lithium-ion batteries. Someone will think now: well done and done, there are plenty of such on the Internet. And I want to say right away that my design is capable of charging both one battery and four at once. All

Electric bicycles are trending today. Even the well-known car companies, no, no, and they will present a model of a futuristic bicycle of the future, whose work is based on clean cheap energy. Well, lovers of handicrafts with their own hands also do not bypass

In our world full of various machines and automated mechanisms, bicycles stubbornly do not lose popularity. They are remade, modernized, and new models of incredible shapes and sizes are created. But at the heart of them are the same two wheels. AND

Most hams, including myself, faced such a problem as leaving the multimeter turned on for a while and forgetting about it, which ultimately leads to frequent crown replacement due to low discharge. In this case, solve this problem

This is a good and low-cost way to make an adjustable power supply without much cost and effort. For example, I have a good power supply unit for 12 V and 2 A. I will assemble a prefix for it, with which it will be possible to adjust the voltage

In everyday time, people often use gadgets (smartphones, tablets, etc.), but when going somewhere on the road, we constantly need to charge our phone. This problem will be solved by Power Bank which can be manufactured in an hour and a half from the available

Country and country life is full of unforeseen surprises. They either turn off the gas, or shut off the water, and then the electricity suddenly disappeared somewhere. A dull and boring pastime will help brighten up the stand-alone LED lamp, which you can make in

Such a simple and portable column can be assembled with your own hands from improvised materials, unnecessary spare parts and a couple of goods from Aliexpress. It’s enough to have straight arms and a little perseverance ...

One fine moment, taking my screwdriver out of the storage room, I found that it was not working. The batteries were discharged, the first thing I thought and put the screwdriver on charge. But as soon as I connected the charger to the battery, it immediately

An old 500 W halogen lamp was lying in my garage. I used it to illuminate the bottom of the car from a viewing hole. Very comfortable good flashlight with a handle and a protective grill. But the trouble is: the halogen lamp burned out. Sure,

Solar energy is not given an innovation, but a reality, which today is available to almost everyone. In this workshop I will show you how to make a fully autonomous garage power system. Although the garage has a stationary

Hello! In this article I will tell you about how to make a simple gas leak detector with your own hands from the available parts. Probably, now even any schoolchild knows that such a dangerous gas as methane is odorless, and detect it in the air without

For me, as a radio amateur, this laboratory electronic bathtub became just an indispensable assistant. If you are engaged in radio electronics, I sincerely recommend repeating it to you. I often have to make printed circuit boards. Manufacturing process

In this master class I will remodel a searchlight with a motion sensor into a searchlight with a remote control. A motion sensor is certainly good, but in some places it is not as useful as remote activation. I make this lamp for

SIM800L V2.0 GSM / GPRS is a quad-band GSM / GPRS module compatible with Arduino. The module is used to implement the functions of GSM (calls and SMS) and GPRS. The advantage of this module is the TTL interface, having a voltage of 5V, which allows

Greetings, dear friends. Finally, I got to recording a lesson on working with the voice module. I see you liked my voice-activated home-made product and many have already begun to wonder when the practical lesson on working with

I welcome you dear friends! Today I will tell you about my next homemade product. This is a hood with automatic control. No, of course I didn’t do the hood itself - I bought a ready-made one, but I organized the automatic switching on the basis of ready-made ones

Hello dear friends. Today, these not expensive and high-quality headphones will be the subject of my review. To begin with, I needed high-quality headphones for the computer. By headphone quality, I mean first of all quality

Hello! Today we will get acquainted with such a tricky device called a wattmeter. The device has a built-in design and can be integrated into the device or operated directly without installation. The power meter is designed to measure

Good day to all, dear friends! In this video we will consider a radio-controlled outlet or a socket with a remote control. This device is designed for remote switching power of almost any household appliance.

Hello friends. Today I want to tell and show you my homemade product that uses voice control. In fact, it is a on / off switch with voice control. A feature of this homemade product is that this device may not

Hello. Today I will tell you about the regulator (thermostat) for domestic use. This is a complete device, nor any board that still needs to be powered with something and know how to connect. Therefore, any person without knowledge can cope with it.

Hello friends. The other day I came here is such a thing called Wi-Fi USB antenna. Here in such a box. In a nutshell, this is the same USB Wi-Fi adapter for a computer, only with a directional antenna and wire. But compared to