To begin with, this Simple Siren Circuit article show how to make circuit sound like real siren! here, the sound goes up and down fast like police car or ambulance siren. Also, building this type of circuit is fun, but remember that people use sirens during emergencies. Circuit Working: Parts List: Components Values Quantity Resistors […]
Security and Protection
Infrared Alarm Barrier Circuit
This Infrared Alarm Barrier Circuit shows how to use light which we cannot see to make tripwire alarm; it also work like beam of light for small fences. When someone walk in front of light and break it, loud alarm make big noise to warn and scare person; it is fun project to do but […]
Capacitive Proximity Sensor Circuit
This Capacitive Proximity Sensor Circuit works like an electronic watchdog that detects when someone comes nearby using electronic components. Also, these kinds of circuits work in smart home devices, automatic lights and security systems; the circuit detects changes around it, especially when a person comes near and then it blinks a light or sounds an […]
Precision Electronic Rat Repellent Circuit
When we plug in Precision Electronic Rat Repellent Circuit device, it makes high loud noise that rat and mouse do not like. Also, humans and most animals cannot hear this noise because of its very high frequency, hence, this device is a good choice if we do not want to use poison, as it produces […]
Simple Electronic Code Lock Circuit
To begin with, this is easy and Simple Electronic Code Lock Circuit; to open door or box no need of key we can use special code instead. Also, this circuit uses buttons and code to the open lock, so only correct code can open and wrong code will not work. Circuit Working: Parts List: Components […]
PIR Motion Sensing Security Light Circuit
This PIR Motion Sensing Security Light Circuit is a very nice project for person who love electronics. Furthermore, this circuit uses a special sensor for security; unlike normal switches that turn lights ON and OFF manually, this light includes a built-in motion sensor. Here, the sensor can see the movement like someone is walking and […]