In my project, I've successfully analyzed the arena and have detected the obstacles using an overhead webcam. I also have computed the shortest path. The path data is transmitted to the robot via Zigbee, based on which it moves to its destination.
The problem is: My robot is not taking accurate turns which would cause error in the rest of path it follows.
Could anyone please suggest any methods/techniques for feedback from the robot so as the path is corrected and the robot follows the original path computed without any deviation? (Basically a tracking mechanism to avoid deviation from the original computed path)