|
Re: driving straight
Drive 20 feet forward. Note which way the robot veered.
Drive 20 feet in reverse. Note which way the robot veered.
If the robot turned the opposite direction in reverse as forwards (e.g. it ended up near the original start point), one side of the drive is faster than the other in both directions. Check tension, motor free speeds, grease, calibration, etc.
If the robot turned the same way forwards and backwards (one side is faster forwards but the other side is faster in reverse), it may just be motor bias. You can (1) double check speed controller calibration, (2) just live with it, or (3) add sensors or other mechanisms to help correct the problem. Usually (1) and (2) will be good enough.
|