Tag: Do it yourself

Voltage fluctuations and power cuts can damage electrical equipment and goods like submersible pumps, air-conditioners, television sets, and refrigerators. The circuit presented here (see Fig. 1) will protect the costly electrical items from high as well as low voltages. The...

This unique but simple call bell can be used to call an office boy or a help at home from up to nine different places. Besides ringing, it shows the number of caller’s room or place from where the...

This simple single-channel audio amplifier is built around 8-pin IC TDA 7052 and uses only a few other components. Two of these can be used as a stereo amplifier. The amplifier gives 1W output with a power supply of...

Raspberry Pi’s first board based on a single microcontroller chip, the Raspberry Pi Pico (Fig. 1), is designed for physical computing—similar in concept to an Arduino—ratherthan perform the role of a general-purpose computer (like the others in the range)....

At times, during multitasking, you would have wished to have more than two hands attached to your body, which you could control using your mind—just like you control your natural hands. But considering it as unrealistic, and only belonging...

We are all familiar with the earth images of clouds and hurricanes taken from the earth-orbiting satellites in our daily weather forecasts. With the modern technology and internet connectivity, now a days, such images are accessible to any individual...

Micropython on ESP8266 Micropython is very similar to python 3, only it is targeted for microcontrollers. So, if you know how to program in python, you will find it easy to start with micropython. Micropython also comes with an interactive...

Use of a room heater at night in winters can cause sleepless nights, dry skin, and allergy. Worse, it can prove a health hazard due to increase in level of carbon monoxide in the room. People with heart disease...

Many mini electronic modules are available in the market for providing quick plug-and-play solutions. We can use some of these modules to make a low-cost, portable, 15W public address (PA) system that includes a battery management system (BMS). Construction and...

The circuit presented here can provide up to three amperes of current for a 5V, 6V, 8V, or 9V supply. It uses the popular adjustable voltage regulator LM317, which is inexpensive and is used generally for variable power supplies...