A Starry Ceiling for the Kids

Introduction

When my little girl was born I wanted to make her a special night light for in her room. I made her a ceiling light with twinkling stars. It is made up of a piece of custom wood with 100 LEDs mounted in it. An AVR AT90S8538 micro controller runs a bascom program that produces a random pattern on these 100 LEDs. The LEDs are connected in a 8x13 matrix and the processor scans this matrix so that only 1 light is on at a time. Persistance of vision makes it look like there are many stars on at any one time..

A close up of the controller with the programming lead still connected.

 

The Light Board.
Up against the ceiling
Resources

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