Pir Sensor Circuit Diagram. Open a new sketch file by clicking new. Follow the circuit diagram and make the connections as shown in the image below.
Motion Detector Alarm Circuit With Pir Sensor Simple And Cheap Motion Detector Electrical Circuit Diagram Circuit Projects from www.pinterest.com
In the presence of a human ir radiation the sensor detects the radiations and instantly converts it into minute electrical pulses enough to trigger the transistor into conduction making its collector go low. Coding in the arduino language will control your circuit. Pin 1 is vcc which is connected positive 5v supply.
Everyone emits some low level of radiation the warmer the thing is the more radiation is emitted.
A practical implementation of the explained pin out details can be witnessed here. Everyone emits some low level of radiation the warmer the thing is the more radiation is emitted. Follow the circuit diagram and make the connections as shown in the image below. So this is very useful for security alarm and security light uses.
