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Unread 22-02-2011, 08:22
Chris Hibner's Avatar Unsung FIRST Hero
Chris Hibner Chris Hibner is offline
Eschewing Obfuscation Since 1990
AKA: Lars Kamen's Roadie
FRC #0051 (Wings of Fire)
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Re: Descending robot arm

Quote:
Originally Posted by Robby Unruh View Post
So this year our arm is a little different from the majority of teams. Ours is an actual "arm", with two joints. I've only seen one or two like it on CD, and I'm proud to be somewhat unique.

My question is that when we move our robot arm down, it falls quickly, and the only way to safely descend is to sparatically press the down button every half a second or so. I've done everything I could in the programming to try to slow it down, but no luck.

We are using denso window motors with chain drive, and Java programming. Any help would be greatly appreciated.
Thanks.
Do you have any feedback on the arm (encoder or potentiometer)?

Can the arm travel beyond vertical (i.e. can it reach to the front-side and back-side of the robot), or is it confined to one side of the robot?

Any pictures you can share?
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