Sensors and Detectors

This Touch Controlled Potentiometer Circuit one just need to tap it and it will start to work. No need to turn knob or move the slider it just touches the sensor and it changes the resistance or voltage. It uses capacitive sensing which means that when one contacts it, the body will act as a […]

This Thunder Lightning Detector Circuit teaches us how to make lightning detector, a tool used by storm chasers! Lightning makes special energy in sky. When storm come this circuit find that energy and give alert by light or sound. So person can go safe place before rain start. Circuit Working: Parts List: Category Item Quantity […]

In this Mobile Phone Detector Circuit using Op-Amp we will show how to make one circuit to detect mobile phones nearby. It can catch the radio signal from phone when phone is ON and it tells if someone using phone in quiet place like meeting room or library where phone are not allowed. But be […]

This Anti Corrosion Free Liquid Level Sensor Circuit show how to make sensor for checking water level in tank or container. It send small electric signal and uses some metal pins to know if water touches them or not. No strong chemical is used in this circuit so metal do not get rust or damage. […]

This Capacitive Proximity Sensor Circuit circuit work like human electronic watchdog. It feel when someone comes close by using electric parts. These kind of circuit are used in smart home things, auto light and security system. The circuit sees changes around it and mostly when person come near. Then it does something like blink light […]