Team 58 - Autonomous prototyping

[bobl]

Using last year's base, we can successfully follow the line and stop 4ft from the will. We are using the kit photo sensors from line tracking and a sonic sensor to determine how far from the wall we are.

http://www.youtube.com/watch?v=TxecJr9TZh0

[Spartechs2441]

How does the sonic sensor part of that work?