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!
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.