Electronics from China. Page 2

I was sitting one evening with a book in my hands and a crazy idea came to me. Speakers in column design are already boring. So I decided to put together an unusual speaker, not like everyone else. You can take it outdoors or use it in the garage or at the dacha. I found an old one in the barn

Anyone can assemble such a simple regulator. Knowledge of electronics will not be required, since a ready-made Chinese module will be used, which can be purchased for a very small amount. With all this, the regulator is able to regulate power

There are a lot of chargers on the market now. Automatic machines or not, with or without capacitance measurement. Most chargers are universal and can charge elements of any chemistry. Lithium ion and lithium polymer are increasingly used in various devices.

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

Electric bicycles are in trend today. Even well-known car companies will present a model of a futuristic bicycle of the future, the operation of which is based on clean, cheap energy. Well, those who like to make things with their own hands also don’t bypass

In our world, full of a variety of 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 they are based on the same two wheels. AND

Most radio amateurs, including me, have encountered the problem of leaving a multimeter turned on for a while and forgetting about it, which ultimately leads to frequent replacement of the crown due to low discharge. In this case, solve this

This is a good and inexpensive way to make an adjustable power supply without much expense or effort. For example, I have a good power supply of 12 V and 2 A. I will assemble an attachment for it, with which I can regulate the voltage in

In everyday life, people often use gadgets (smartphones, tablets, etc.), but when we go somewhere, we constantly need to charge our phone. This problem will be solved by a Power Bank that can be made in an hour and a half from

Country and country life is full of unexpected surprises. Either the gas would be turned off, or the water would be cut off, and then the electricity suddenly disappeared somewhere. A dull and boring pastime will be brightened up by an autonomous LED lamp, which can be made in

You can assemble such a simple and portable speaker with your own hands from scrap materials, unnecessary spare parts and a couple of products from Aliexpress. All you need is straight arms and a little perseverance...

One day, when I took my screwdriver out of the closet, I discovered that it didn’t work. The batteries were dead, the first thing I thought was and put the screwdriver on charge. But as soon as I connected the charger to the battery, it immediately

I had an old 500 W halogen lamp lying in my garage. I used it to illuminate the lower part of the car from the inspection hole. A very convenient good lantern with a handle and a protective grille. But here's the problem: the halogen lamp burned out. Certainly,

Solar energy is no longer an innovation, but a reality that today is available to almost everyone.In this master class I will show you how to make a completely autonomous power supply system for your garage. Although the garage has a stationary

Hi all! In this article I will tell you how to make a simple gas leak sensor with your own hands from available parts. Probably, now even any schoolchild knows that such a dangerous gas as methane has no odor, and it can be detected in the air without

This laboratory electronic bath has become simply an indispensable assistant for me, as a radio amateur. If you are involved in radio electronics, I sincerely recommend that you repeat it too. I often have to make printed circuit boards. Process

In this master class I will be converting a floodlight with a motion sensor into a spotlight with a remote control. The motion sensor is certainly good, but in some places it is not as useful as remote activation. I am making this lantern

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

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

Greetings, 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 make 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 the subject of my review will be these inexpensive and high-quality headphones. Let's start with the fact that I needed high-quality headphones for my computer. By quality of headphones I mean first of all quality

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

Good day everyone, dear friends! In this video we will look at a radio controlled socket or remote controlled socket. This device is designed for remote switching of power supply to almost any household appliance.

Hello friends. Today I want to tell you and show you my homemade product that uses voice control. It's actually a voice controlled on/off switch.The peculiarity of this homemade product is that this device may not