Sensors and Detectors

This is a special circuit that helps people learn about their skin. It uses sticky pads electrodes placed on your skin to pick up tiny electrical signals. These signals change depending on how relaxed you are. The circuit then shows you this change, like with lights or sounds so you can learn to relax more. […]

In this article it is an electronic gadget that can sense pressure changes. Imagine a special plate that feels pressure like a doormat. If someone steps on the plate pressure increases or air pressure changes in a machine, this circuit can detect it. When the pressure gets higher than a set level, it sends a […]

A vibration sensor circuit acts like a tiny touchy feely friend for electronics. It can sense shaking or sudden movements and send an electrical signal when it does. This makes it perfect for things like burglar alarms to feel someone breaking in, earthquake detectors to feel the ground shaking or even monitoring machines in factories […]

This circuit is like the eyes for a line following robot. It uses special sensors infrared or IR that can tell the difference between a black line and a white surface. These sensors are like tiny flashlights that shine invisible light. By seeing how much light bounces back the circuit can tell where the line […]

This circuit is like a tiny detective for heat. It uses a special material piezo transducer that acts like a mini electricity maker. When this material gets hot or cold, it squeezes itself a tiny bit and zaps out a little bit of electricity. The circuit can then measure this electricity to figure out how […]

In this post we will find out about the contactless phase indicator circuit using IC 4017. This handy tool can check wires and cables to see if they have electricity running through them, without even touching them. It is great for electricians to find problems in complicated electrical systems. The light will turn on if […]