So, me and Darth (Rodrigo Otávio) made this ‘Light Seeker’, which is basically a pair of full rotation servos (360º) and a couple of photoresistors to sense the light intensity and find out where it comes from.
- 1x Arduino Duemilanove
- 2x Parallax Continuous Rotation Servos
- 2x Photocell resistor
- 2x 1kΩ Resistor
- 1x Protoshield (for mouting)
- 1x Battery pack (4 AA)
We consulted this tutorial http://www.ladyada.net/learn/sensors/cds.html for the photocells, but used a 1k resistor instead of a 10k, since I wanted the sensor more sensitive.
The source code can be downloaded here.