Simple Arduino based motion detector which detects the movement with a PIR sensor and turns on buzzer.

In this project we have simply interefaced a PIR sensor with Arduino Uno and made this motion detector. When there is movement in the range of PIR sensor, it gives high output on its output pin which is then fed with Arduino's input pin. If arduino receivevs any input from PIR sensor, it gives output to its output in which is connected with a buzzer and LED.