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Unread 20-08-2016, 09:29
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tr6scott tr6scott is offline
Um, I smell Motor!
AKA: Scott McBride
FRC #2137 (TORC)
Team Role: Mentor
 
Join Date: Dec 2007
Rookie Year: 2005
Location: Oxford, MI
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Re: How are teams mounting drivetrain encoders on WCD?

Quote:
Originally Posted by nuclearnerd View Post
In 2016 we tried CIMcoders, but found they keep losing counts (despite several attempts to debug and repair - still don't know what the issue is). *Temper tantrum*
Did you wire your cimcoders to the srx? If you did, did you solder in the pull up resistors? If not that is probably the issue with missing counts. We ran them on Minicims for our shooter wheels, to srx running speed control loop on the srx, and worked beautifully.

From Omar, at CTR when I asked question about cimcoder and pullups.

Quote:
Hey Scott,

Pullups
The CimCoder will require external pullups. The 10KΩ that's recommended in the CIMCoder spec is probably best. I think we had another customer who confirmed that without resistors the results are not reliable.

Breakout
Also since it's a 5V sensor, be sure to use a blue-encoder-breakout so that you don't violate the 5V errata on Talons with revisions < 1.7.
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Last edited by tr6scott : 20-08-2016 at 09:37. Reason: added Omar's comments
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