Simple Pir Motion Sensor Circuit Diagram. A pir motion sensor alarm is a device which detects the infrared radiation from a moving human body and triggers an an audible alarm. 12v dc power supply at more 1a.
The post discuses 4 simple motion detector circuits using op amp and transistor. When motion is detected the output of the pir sensor will swing high and power and light the led. We also discuss the pinout details of the standard passive infrared pir sensor re200b.
The circuit will detect movement of any human animal or an object at a distance of 5 to 10 meters depends on the sensitivity of the pir sensor module and activates a buzzer and an led for a set period of time.
This simple motion sensor alarm and light circuit is using a passive infrared sensor module also call pir sensor module. The post discuses 4 simple motion detector circuits using op amp and transistor. Go through the given diagram of the pir sensor to understand its pin outs and arrangement in the circuit. When motion is detected the output of the pir sensor will swing high and power and light the led.
