Simple TV Remote Tester Circuit is small tool like a doctor for ones remote, as it uses one infrared sensor like eye for light which we cannot see and to check if remote give signal when one presses the button. If signal arrives small light turns ON or buzzer make beep sound which means remote […]
Sensors and Detectors
Simple Heat Sensor Circuit using a Single Transistor
To begin with, this Simple Heat Sensor Circuit using a Single Transistor and one special resistor like thermometer. When it get hot this resistor changes to how it work because of which the transistor sees this change; also the transistor work like a door and if temperature changes it opens or closes for electric. So […]
Touch Controlled Potentiometer Circuit
This Touch Controlled Potentiometer Circuit one just need to tap it and it will start to work; also there is no need to turn knob or move the slider it just touches the sensor and it changes the resistance or voltage. Furthermore, it uses capacitive sensing which means that when one contacts it, the body […]
Touch Controlled Musical Door Bell Circuit
No more boring ding dong bell! This Touch Controlled Musical Door Bell Circuit show how to make doorbell which play small music tune; just press a button and it rings a melody sound which we can choose which one. Also, this circuit is fun idea to make door more special and different. Circuit Working: Parts […]
Thunder Lightning Detector Circuit
This Thunder Lightning Detector Circuit teaches us how to make lightning detector, a tool used by storm chasers! Moreover, lightning makes special energy in sky and 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: Components […]
Mobile Phone Detector Circuit using Op-Amp
To begin with, in this Mobile Phone Detector Circuit using Op-Amp we will show how to make one circuit to detect mobile phones nearby. The circuit detects radio signals from an active mobile phone, helping to identify unauthorized phone usage in quiet places like meeting rooms and libraries. However, always check local rules and regulations […]