Pir Sensor Circuit Diagram Pdf. Simple touch sensitive switch circuit using 555 timer bc547 transistor working of motion detector circuit. How to use pir motion sensor.
Pir sensor only detect the presence of the infrared rays which comes into its range it does not emit infrared. When a warm body like a human or animal passes by it first intercepts one half of the pir sensor which causes a positive differential change between the two halves. The output pin of the pir sensor is connected to the 2 nd digital pin of arduino.
5 complete circuit diagram of th e system.
The output pin of the pir sensor is connected to the 2 nd digital pin of arduino. Wiring diagram consists of many detailed illustrations that display the relationship of varied items. This sensor has three output pins vcc output and ground as shown in the pin diagram above. Pir technology the sensor s segmented lens divides the field of view into sensor zones and detects the changes in temperature that are created when a person or part of a person as small as a hand passes into or out of a sensor zone.
