Lesson 16 Movement Detection Based on PIR
Introduction
The PIR (passive Infrared) sensor can detect the Infrared rays emitted by human or
animals and then output On/Off signals. Traditional pyroelectric PIR sensor needs
pyroelectric Infrared probe, special chip and complex circuits to make the effect. In this
case, the sensor is a large one with complicated circuits and comparatively less credible.
But this Infrared pyroelectric motion sensor adopts the digital integration of the probe, so
it boasts high credibility, low power consumption and simple outside circuit with a small
size. It can be applied to any cases in detecting moving human or animals.
Components
- 1 * Raspberry Pi
- 1 * GPIO Extension Board
- 1 * 40-Pin GPIO Cable
- 1 * Breadboard
- 1 * PIR Sensor Module
- 1 * 3-Pin Wires
Experimental Principle
The Fritzing image:
The Physical picture:
Pin definition:
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