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Unread 15-04-2006, 04:40
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RbtGal1351 RbtGal1351 is offline
~La Reina de los Robots~
AKA: Stephanie
FRC #1351 (TKO)
Team Role: Programmer
 
Join Date: Dec 2004
Rookie Year: 2004
Location: San Jose, CA
Posts: 166
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Victor-PWM Cable connections

Hello all,

I am wondering what fixes teams have come up with to ensure a good connection between the Victor Speed Controllers and its PWM Cable.

What happened: During the final rounds at Davis, one of our drive motor Victors started continually blinking orange (no signal). We traced the problem to a bad PWM cable connection. We did replace a fried Victor right before this problem occurred, so I would assume that our cables were just unseated during this process. We did, after this, make sure the PWM cables were plugged all the way in, which they were. I am wondering how the PWM cable does not make contact if it is all the way down (vertically).

Also, our victors are mounted on the bottom of our robot, so it would be rather unlikely for the cable to just "pop out" of the Victor seating, plus they are electrical taped in to avoid this very problem.

If the connections are so precarious to unseat and lose the connection that easily, how and why do they withstand competitive matches? Or don't they?

What have you come up with to solve this problem?

Thanks a bunch in advance,
~Stephanie

PS--Searched, these threads may be useful too:
http://www.chiefdelphi.com/forums/sh...m+connec tion
http://www.chiefdelphi.com/forums/sh...m+connec tion
__________________
2004 Founding member and Arm leader, 2005 Lead programmer, 2006 Controls leader, 2007 Project Manager/President
Thanks for making FIRST such a great experience for me. I'm no longer on 1351, and I'm not currently planning to mentor team 97, but FIRST has meant so much in getting me to where I am now, in life and at MIT, class of 2011.
I met Billfred! He recognized me!
SVR 04: 11th seed - Highest Rookie Seed - Semifinalists w/ 1120 and 568 - GM Industrial Design Award
SVR 05: Semifinalists w/ 8 and 766
SVR 06: 6th seed - Quarterfinalists w/ 368 and 1072
Davis 06: 1st seed - Quarterfinalists w/ 649 and 100 - KPCB Entrepreneurship Award
SVR 07: 36th seed
David 07: 4th seed - Semifinalists w/ 1280 and 692 - Johnson and Johnson Sportsmanship Award