Electronics

Each of us has long been accustomed to using all kinds of gadgets that make life easier: mobile phones, all kinds of smart phones and tablets, etc. ... In this article we will replace your usual watering can with a technological device for watering flowers that will take care of your favorite indoor plant even if you went on vacation.

Hello! This is my first instruction! We are all surrounded by electrical appliances with different specifications. Most of them work directly from a 220 V AC network. But what to do if you come up with some non-standard device, or are carrying out a project that requires a specific voltage, and also with direct current.

This is an instruction (guide) on how to make a cheap convenient and portable device for spot welding of metal out of a damaged microwave oven. Please note that this is dangerous, this is indicated by the inscription shown on the transformer: “DANGEROUS, HIGH VOLTAGE”, take all possible precautions by following these instructions: Materials The meager cost of this spot welding can be generally reduced to zero if You will find the following accessories without resorting to purchase: 1.

I made this solar furnace for a school project, and here are my results and information on its construction in stages. 1. What is a solar furnace? A solar oven, unlike a conventional one, is heated with the help of solar thermal energy. Solar ovens can be used to heat food, prepare, or pasteurize drinks.

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 you to directly connect it to an Arduino or any other system with a 5V power supply.

Hello. I want to tell you about my recent "craft", namely the watch on gas discharge indicators (GRI). Gas-discharge indicators have long sunk into oblivion; personally, they are even the most “newer” ones to me. GRI was used mainly in watches and measuring instruments, later vacuum-luminescent indicators came in their place.

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 a garage, where it is always dark, and where there are many "blind" zones if you use a motion sensor.

We often find ourselves in situations where the battery of our device (tablet, smartphone, portable speaker, etc.) runs out and, moreover, we are far from the mains. In this case, a power bank can help us, but not everyone can afford expensive devices. I will tell you how to easily and easily make it, and it will also have a fairly powerful flashlight and a small flashlight for fine lighting.

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. What is a water bath. A laboratory water bath is a tank with a thermostat-controlled heater.

An AC voltage detector is a device that detects the presence of alternating current over a short distance without any electrical connections to the line. This simple device will help you determine the presence of life-threatening voltage in the network and wires, help you find the place of cable laying in a concrete or brick wall.

LEDs can be very effective and economical in long-term use. 10 Watt LED bulbs can replace 100 W or 30 W incandescent bulbs with a compact fluorescent lamp. Despite the relatively high initial cost, compared to other types of lamps, your electricity bill can be significantly reduced if you use these LED lamps yourself.

Projector Advantages: Scanning is carried out using X and Y mirrors. 2x 35 mm stepper motor with 0.9 degree increments - 400 steps / rev. - 5 V. Automatic calibration of mirrors. Remote control (via bluetooth optional). Auto mode. GUI remote control application.

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 student knows that such a dangerous gas like methane is odorless, and it is simply not possible to detect it in the air without special devices. Methane is the main component of natural gas.

I have not seen an inverter circuit easier than this. For repetition, you need a minimum of parts - there are no more than 10 pieces. To obtain a voltage at the output of 220 volts, we need one finger battery with a voltage of 1.5 volts. Inverters are needed where there is no way to connect to a 220 volt network.

Our life is unpredictable, and what can least happen is what can always happen. For example, a water leak may occur in a place that seemed particularly reliable. In order to react in time and learn about such a leakage of water from the initial drops, I will offer you a simple alarm option that each of you can do with your own hands.

LEDs have long supplanted incandescent bulbs from almost all areas. It is understandable: the LED is superior in brightness to lamps, given its energy consumption. But LEDs also have a number of disadvantages. Of course, we won’t talk about everyone, but we’ll discuss one. This is a high threshold for initial power supply - it is about 1.8-2.2 volts.

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 electric network, but I decided to refuse it, because there are too many interruptions in its work ... Often there is no light for debt.

The simplest thermal power plant is the free energy you can get from your home. This mini power plant uses the heat of your central heating system. Why is it free? - Because all the warmth remains in your home and is not lost anywhere. The well-known Peltier element will generate energy, which in our time will not be difficult to get.

The idea of ​​getting free electricity is using the potential difference between the network zero and the ground. A small caveat: this way of generating energy works 100 percent. This is not a hoax, no device that is not clear and draws electricity from the ether, no miracle device with magnets, etc. We will use the voltage difference between the zero of the 220 V network and ground.

A simple detector that will show whether a person is lying or tells the truth. Of course, he is far from a real, modern lie detector - a polygraph, but he deserves attention, since anyone can do it with his own hands. Like any, even the most modern polygraph, it does not show 100% that a person is lying.