A Simple Vibration Sensor Circuit works like a small motion detector for electronics, it senses shaking or sudden movement and then sends an electrical signal. Furthermore, this type of circuit is good for use in thief alarm to feel someone come in or for earthquake to feel ground move; also, we can use it in […]
Security and Protection
Electronic Gatekeeper Circuit
This small and Electronic Gatekeeper Circuit work like little guard for our door, it uses sensor to check if someone comes or goes from gate. Sensor can be like light beam or something we can step on and if person goes through without permission then circuit make alarm or send message to tell us. So […]
Heat Sensor Circuit using Piezo Transducer
This Heat Sensor Circuit using Piezo Transducer is like small detective for heat, which uses special thing called piezo transducer and work like tiny electricity maker. When it get hot or cold it presses itself little bit and make small electric shock and the circuit look at this shock to know how much hot or […]
Simple Power Strip Surge Protector Circuit
Simple Power Strip Surge Protector Circuit is like hero for our plugs, they help protect our devices from big shock of electricity called power surge or spike. Also, this surge can come when storm happen or when other machine turn ON or OFF. Inside power strip a special part called MOV take this extra electricity […]
Simple 2 LED Battery Status Indicator Circuit
This Simple 2 LED Battery Status Indicator Circuit work like gas meter but for battery, as it uses LED lights to tell how much power battery still have. One light mean battery is full another light mean half power and last light mean time to charge. Also, it use small parts like resistors, Zener diodes […]
Simple Entrance Alarm Circuit
This Simple Entrance Alarm Circuit protects a door or entryway; it produces a loud sound when someone passes through an invisible IR light beam. Furthermore, it works good at day and night by not giving much wrong alarm; also the circuit is simple and good for hobby people during nighttime. Circuit Working: Parts List: Components […]