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.
- Circuit Playground
- 3 x AAA Battery Holder
- 3 x AAA Batteries (NiMH work great!)
