Motion detector sensor light switch: The main idea of this circuit is to on light switch or alarm automaticly when any human, animals or any live object come in the range of the PIR sensor. We can install this circuit anywhere to protct the home or office from thefting or to open and close the door automaticlly as any person come and out. In the circuit when PIR sensor detects any live object movement it triggers the switch (switch can be for a alaram door open peep or light).
Motion detector sensor light switch Animated Diagram
The picture given below is the complete project with PIR sensor light switch. In this circuit we have used PIR ssensor and a relay to control the AC appliaces. Your can use Alaram wash room bulb gate auto close and auto open and etc.
Motion detector sensor light switch Diagram
The circut diagram of motion sensor light switch is given below. We have used a buzzer adtionally in this circuit and a voltage regulator of 5v for the protection of PIR motion sensor module. If you want to use 3.7v supply then no need of voltage regulator just use 5v relay to run the circuit
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