PeterH:
Randolph:
Also, detect a change in current for slippage (that may affect odometry and location).[/li][/list]I don't think that will be a practical method for detecting slip. If you need to know the absolute position reliably then you need to provide some means to determine it - for example, using GPS.
Well to elaborate we are going to use stereo vision to compare visual odometry with dead reckoning. This will be in a desert like environment.