The PIR sensor stands for Passive Infrared sensor. It is a low cost sensor which can detect the presence of Human beings or animals. ThisHC-SR501 PIR sensor modulehas three output pins Vcc, Output and Ground as shown in the pin diagram above. Since the output pin is 3.3V TTL logic it...
PIR stands for Pyroelectic Infrared Radial Sensor or Passive Infrared Sensor. PIR is an electronic sensor which detects the changes in the infrared light across certain distance and gives out an electrical signal at its output in response to a detected IR signal. It can detect any infrared emitt...
Pinout Wiring the PIR motion sensor to an Arduino is pretty straightforward – the sensor has only 3 pins. GND – connect to ground OUT – connect to an Arduino digital pin 5V – connect to 5V Parts required Here’s the required parts for this project ...
HC-SR505 is a pyroelectric motion sensor. All the objects having a temperature above absolute zero release heat energy. This energy is in the form of infrared radiation. Even human bodies emit infrared light radiations. HC-SR505 sensor detects the motions of the object by measuring the changes...
Schematic Diagram In the above schematic, we can see that GPIO14 is connected with the anode pin of LED, and the cathode pin is connected with the common ground through the 220 ohm resistor. The PIR Sensor which we are using in this tutorial consists of three pins. Two of them are powe...