No more propping your eyes open with matchsticks to try and catch Santa! This Scratch program uses a low-cost, infra-red detector to set off an alarm when Santa sneaks into your room. It’s a great introduction to using simple sensors on the Raspberry Pi, and can be adapted to lots of different projects.
A Raspberry Pi with an SD card loaded with Raspbian
A passive infra-red detector (try eBay)
Three female-to-female header leads
Scratch GPIO 5 STEPS
Connect the sensor
Test the sensor in Scratch
Draw a sprite and add sound
Program what happens when the detector spots movement
Set up the detector in your room!
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