21st Century Learning and Teaching

Reading PIR Sensors
Connecting PIR sensors to a microcontroller is really simple. The PIR acts as a digital output, it can be high voltage or low voltage, so all you need to do is listen for the pin to flip high (detected) or low (not detected) by listening on a digital input on your Arduino

Its likely that you'll want reriggering, so be sure to put the jumper in the H position!

Power the PIR with 5V and connect ground to ground. Then connect the output to a digital pin. In this example we'll use pin 2.

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=ARDUINO

The HC-SR501 Passive Infrared (PIR) Motion Sensor This  motion sensor module uses the LHI778 Passive Infrared Sensor and the BISS0001 IC to control how motion is detected. The module features adjus…

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Motion sensing devices are commonly used in burglar alarms and automated lighting systems. The HC-SR501 is a motion sensor module that is inexpensive and very versatile.  It can be used all by itself or combined with a micrrocontroller or microcomputer to create a number of motion sensing products.

In this article you’ll learn how PIR (Passive Infrared) motion sensors work and how to use them with an Arduino or Raspberry Pi.

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=ARDUINO