Overview

This is a fun and simple beginner project that uses the Circuit Playground to create a light activated alarm. A diary, or other object, can be placed on top of the Circuit Playground and an alarm will sound when the object is removed.

Required Parts

This project uses the sensors already included on the Circuit Playground, either a Classic or an Express. The only additional items needed are batteries for power and a holder for the batteries.

Before Starting

If you are new to the Circuit Playground, you may want to first read these overview guides.

Circuit Playground Classic

Circuit Playground Express

Last updated on 2017-11-17 at 01.12.11 PM Published on 2016-10-11 at 08.56.04 PM