The MagPi, Issue 106

The MagPi Issue 106This month’s issue of The MagPi Magazine includes another of my tutorials for those looking to get started with the MicroPython platform on the Raspberry Pi Pico microcontroller: a Pico-powered burglar alarm driven by one or more passive infrared sensors.

Originally written as part of Get Started with MicroPython on Raspberry Pi Pico: The Official Guide, my guide to physical computing on Raspberry Pi’s first-ever microcontroller development board, the burglar alarm tutorial builds up step-by-step from introducing a single passive infrared motion sensor to interfacing with multiple sensors, printing status reports over the serial console, and triggering a piezoelectric buzzer in place of a real alarm’s rather louder horn.

As with other tutorials written for the book, full source code – in MicroPython – is provided, along with wiring references designed to make it as easy as possible to add the components to a Raspberry Pi Pico installed on a solderless breadboard. There’s scope for further extension, too: adding break-beam sensors, glass-break sensors, or a code pad for disabling and enabling the alarm on-demand.

The MagPi Issue 106 is available at now at all good newsagents and supermarkets, online with global delivery, or as a Creative Commons-licensed DRM-free zero-cost PDF download on the official website.