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Unread 16-02-2009, 22:19
dmlawrence dmlawrence is offline
MIT '14
FRC #1751 (Warriors)
Team Role: Alumni
 
Join Date: Jan 2007
Rookie Year: 2006
Location: Long Island
Posts: 63
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Encoders not working

I am using the quadrature encoders that were included in the kit. I am experiencing an odd problem where the signal suddenly drops out soon after we start driving. I have attached a graph of the signal (after a low-pass filter) that shows the dropout very clearly. Here are some possible causes that have occurred to me

(1) The signal, which is passed through two solder joints and then a DB-25 connector, is somehow degraded to an unusable point.

(2) The camera processing is interfering with the encoder counting. (CPU usage is in the 80-90% range.)

(3) Something else?

Which of these is most likely? Any help will be most appreciated.

David
Team 1751
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