In the next tutorial we’ll add a buzzer and LEDs to our sensing circuit to raise an alarm when an intruder is detected! ![]() This tutorial will outline how to assemble the circuit with a PIR sensor, and devise a simple script to print a message when the sensor detects movement. In this tutorial, we’ll expand on previous lessons by transplanting a button with a PIR sensor (to sense motion). If you haven’t read the previous tutorials please do so, as they include a few points (such as basic Python programming and Board/BCM GPIO numbering) that will be skipped in this tutorial. In previous tutorials, we outlined the basics behind physical computing and the Raspberry Pi by activating LEDs and scripts using a simple one button circuit.
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