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Unread 10-11-2011, 08:32
Jared Russell's Avatar
Jared Russell Jared Russell is offline
Taking a year (mostly) off
FRC #0254 (The Cheesy Poofs), FRC #0341 (Miss Daisy)
Team Role: Engineer
 
Join Date: Nov 2002
Rookie Year: 2001
Location: San Francisco, CA
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Re: pic: FRC488's Octocanum Ver 2.0

Quote:
Originally Posted by JohnGilb View Post
We did that for a time, but it turned out the finer resolution was overkill and a bit noisy. The lower resolution (500 deg/sec max output) was accurate enough.

Actually, I thought the gyro was broken, because sometimes it wouldn't drift at all for long periods of time. Then I'd kick the robot and see it respond. The gyro combined with the default gyro libraries from WPI worked pretty well.
This is probably due to two features of your gyro:

1. The bandwidth of the gyro as implemented on that evaluation board.
2. The "auto zero" function, which apparently uses Vref to provide a dynamic estimate of what the true bias is (if you used this feature)

Last edited by Jared Russell : 10-11-2011 at 08:36.
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