Free Project Circuits

Generally, appliances used in our home are controlled with the help of switches. These days, you can see many technologies used in home automation projects.

This circuit is designed to alert the user when an intruder enters into the home. If there is any obstacle in front of IR sensor,

Have you ever tried to design a circuit that produces sound? Here is the circuit that produces five tones. This is a simple toy piano

Nowadays, door bells are very common in every house. We daily observe different types of door bells are available in the market and they produce

Human detection robot is not a new technology. Many types of human detection robots were designed depending on the application. During the natural calamities like

This article describes the principle, design and operation of a digital stopwatch circuit. A digital stopwatch can be a circuit displaying the actual time in

This article is written to describe the design and working of a simple LED cube circuit. Most of the LED cube circuits are designed using

FM Radio circuit is the simple circuit that can be tuned to the required frequency locally. This article describes the circuit of FM radio circuit.

Audio tone control circuits are mainly used for 2 reasons. The first reason is to control the BANDWIDTH of the signal, which is entering into

A Smoke Detector is a smoke sensing device that indicates fire. Smoke Detectors are very common in homes, offices, schools and industries. Smoke Detectors are