[Dan252]

Hey, we need your help.

About a day before we bagged and tagged we noticed that the DS lost communication every couple on seconds and everything on the robot flickered (we also heard it because of the solenoids). When we checked for the source of the problem we noticed that the frame of the robot had 12V on it. We checked with a multimeter by putting the (+) on battery + and (-) on the aluminium frame.

We found that the problem root is a BaneBot motor whose common is shorted to its cover (which touches the robot frame). What was weird is that the multimeter showed resistance between the (-) wire and the motor cover only when the motor was at a certain orientation. When I removed the motor to test it alone, not embedded in the system, I did not see any resistance (and I varied it's orientation between each test).

Do you think the motor is really the component that is causing the problem or might there be another cause?

Also, our team had built 2 robots, one for each idea we had (so they are completely different, also their electrical). And in that second robot the multimeter also showed that there is 12V on the frame but on the other hand, communication worked fine and was solid. (So might the problem be in the software?)

Thanks for any help,
Dan #3075