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Unread 21-02-2003, 22:26
Alan Ing Alan Ing is offline
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Unhappy Exploding 884s

Okay, now that the robot shipped, can someone tell me what happend?

This year we are using 4 motors to drive two seperate gearboxes. Everything was running fine and dandy until we decided we wanted to try and recalibrate the speed controllers. Trying to be expedient about it, we pressed the calibration button simultaneously on two speed controllers that control one gear box and after a second or two, one of the speed controllers blew up. Not having a clue about what happend, we tried pushed the calibration buttons on the remaining speed controllers and another one blew up. What gives? In three years, we've never had this happen before and to my knowledge, there are no metal chips in the electronics as we carefully assembled the electronics after we machined everything?

What gets me, is that it was running fine and only when we pushed the calibration buttons that two speed controllers decided to die. I can see one speed controller failing out of a manufacturing defect, but two?
 


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