Pir Circuit Diagram. Circuit diagram and explanation pirs takes some time to stable itself according to surrounding conditions so you can find led turn on and off randomly for about 10 60 seconds. A simpler explanation for everybody.
There are two important components in this circuit first is pir sensor passive infrared sensor and second is relay. The passive infrared sensor consists of three pins as shown below. Infrared pir human motion sensor detector modules.
A practical implementation of the explained pin out details can be witnessed here.
Universal pcb and more parts. The passive infrared sensor consists of three pins as shown below. L1 on that switch connects to com on the other switch and to l at the pir sensor. Circuit diagram and explanation pirs takes some time to stable itself according to surrounding conditions so you can find led turn on and off randomly for about 10 60 seconds.
