Now so-called smart devices are very popular. In most cases, their main function is the ability to remotely turn on and off via the Internet or mobile network. But also with the help of various solutions it is possible to implement remote control of the outlet, respectively, and any electrical equipment. In this article we will look at ways to solve this problem.

Using a radio relay, they usually operate at a frequency of 315 or 433 MHz. This option is interesting in that it allows you to embed the module both in the device that you will control and in the junction box. Radio relay come with a different number of channels and its good versatility and ease of implementation of the project as a result. The disadvantage is the range. Wi-Fi sockets and relays are also easy to use and versatile. There are many smart sockets on the market, which are an adapter that can be installed in a regular socket ...

Nothing lasts forever in this world, and circuit breakers that operate in home electrical panels sooner or later fail. Problems with power supply begin, they constantly knock out or do not work at all. In this article I will tell you how to choose the right machine for replacing the old one in the electrical panel. To prevent the statements of "experts" about the style of presentation, I will note in advance that it is aimed at a home master who wanted to re-energize an electrical panel.

To begin, consider how to determine the health of the machine and the reasons for which malfunctions occur. There are 5 main problems with circuit breakers in switchboards, if we consider them at the household level and in simple language, of course. False alarms and trips at the same load. The check box of the machine does not cock when trying to turn on, jammed, or returns to the disabled state. The switch case has become charred, blackened or led ...

When replacing halogen lamps with 12V in LED downlights, the question often arises: "Do I need to change the power source?". For halogens, we used electronic transformers with an output voltage of 12 volts, and for LED lamps special power supplies (PSUs) with an output voltage of 12 volts are also sold. What is their difference and are they interchangeable? Let's figure it out!

An electronic transformer is a circuit of a switching power supply based on a transformer and a high-frequency generator based on semiconductor switches. They are powered by 220V AC, and at their output an alternating voltage with an effective value of about 12V. The 220V power is first supplied to the rectifier, after which the rectified pulsating voltage with a frequency of 100 Hz is supplied to the power switch and generator assembly, consider an example of a typical circuit diagram of an electronic transformer ...

A home foreman in the household often has to do something that manually is not always easy and convenient. In this case, a variety of machines come to the rescue. But you need a device that will drive them, for example, an electric motor. But asynchronous three-phase motors, although simple in design and very common, it is not always possible to find and buy capacitors for it. Therefore, you can use engines from household appliances.

In this article, we will consider the scheme of connecting the motor from the washing machine to the network for direct rotation and reverse.Most washing machines use commutator motors. They are convenient in that they do not require starting and working capacitors, can be directly connected to the network. In addition, the simplest speed control for them can be bought at any electrical goods store. The collector motor from the washing machine consists of a stator, a rotor ...

When repairing an apartment, each stage requires a thoughtful approach - you need to decide how to make it not only beautiful, but also practical. The ceilings are finished in a variety of ways, from simple whitewashing or painting, to suspended ceilings made of drywall or stretch ceilings made of film or fabric. But you need to install lamps and chandeliers on it. If with plasterboard structures everything is more or less clear - it is rigid and you can attach the device to metal profiles, then with stretch ceilings the situation is different. In this article we will tell you how to choose and hang a chandelier on a suspended ceiling.

A stretch ceiling is a canvas stretched at a distance from the ceiling. The distance is chosen by the customer and usually it is not less than 5 centimeters from the draft (main), for example, concrete ceiling. There are two types of stretch fabrics: PVC film and fabric. Both materials must not be overheated ...

Microcontrollers allow you to make any automation and monitoring system. But for the interaction of technology and man, we need both input devices - various buttons, levers, potentiometers, and output devices - light indicators (bulbs), various sound signaling devices (tweeters), and finally displays. In this article, we will look at character displays for Arduino, how to connect them and make them work.

Displays can be divided into segment (such as on a digital clock), alphanumeric and graphic. Segmented are used to indicate simple quantities, for example: temperature, time, number of revolutions. Such are used in calculators and on budget household appliances to this day. Information is displayed by highlighting certain characters. They can be both liquid crystal and LED. Alphanumeric displays can be found on the old technology ...

On the sites of modern online stores you can find a variety of Peltier thermoelectric modules. They differ from each other in temperature characteristics, electrical parameters, size, as well as the number of thermocouples installed inside the module. These modules are used both in portable refrigerators and air conditioners, as well as in amateur crafts.

It is worth noting that Peltier modules are single-layer and multi-layer, so that the installation issue is solved quite freely. In the framework of this article, we will consider several types of the most common Peltier thermoelectric modules, we will understand their structure and compare the parameters. Here is a typical single-layer Peltier thermoelectric module. Two ceramic plates with a thickness of less than 1 mm are installed in the upper and lower parts of the module. They serve as a support for internal thermocouples ...

A photometric instrument for measuring illumination is called a light meter. In addition to direct illumination, many light meters also measure brightness, and some measure light ripple. These measurements are carried out in order to determine the quality of light sources, as well as the characteristics of lighting at the workplace and at home.

The fact is that light affects our eyes and mood.Dim light or light with significant ripples causes eye strain, fatigue, depression ... To prevent this, the light must be properly configured, the lamps must be of good quality. In achieving these goals, the light meter also helps. The light meter photosensor senses the visible radiation directed at it, which initiates a current in the measuring device circuit, the magnitude of which is proportional to the illumination. Thus, by the magnitude and other parameters of this current, we can judge about the illumination ...