The middle school team I mentor was having some problems at a tournament yesterday…
Their bot operated perfectly in the qualification matches, but something strange happened during the elimination rounds. When they were on the field, it didn’t move. There was no mechanical failure. As soon as the robot was removed from the field control system, it ran fine. Their batteries (main and 9V) were fresh, their code (easyC) was downloaded and re-downloaded, and all of the software was up to date with the latest versions. It’s just that connection with the field meant certain immobility for them.
In addition, whenever they operated off of the field, the “robot” light on the cortex and controller blinked a slow red (like it was disconnected) but all other lights were green. It, even with this red light, moved with no problem.
The question is thus:
Has anyone had these problems or symptoms? Is there any diagnosis based on the description? (I’m guessing the cortex might be busted, but really I have no clue at this point)
Thanks for your help on this! If you need more details, just say so. I don’t know everything about the robot, since the kids put it together, but I’ll try to help as best as I can.
Yeah, sorry. We fixed this last year by swapping out the coiled handset cable and partner controller. And for the life of me, I have no idea why that worked. They grabbed one of our other team’s partner controllers when they left the pit because we had taken the batteries out of theirs to charge, and the problem went away.
If you can figure out what happened there, I would be amazed.
Competition / Disabled / Single joystick / discharged (or disconnected) main battery / Good backup battery
It matched this one. Except the robot moved at full speed with no problems at all when they were not in field control. It even worked perfectly using their own competition switch. They also changed batteries with freshly charged ones and still had the same problems.