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Unread 14-02-2012, 21:46
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wireties wireties is offline
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AKA: Keith Buchanan
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Re: encoder jumping between two values. please help!

Quote:
Originally Posted by badger3.14 View Post
On our robot, we are trying to use the 360 clicks per revolution encoders from us digital to regulate our speed for our shooter, but when powering up the wheels and reading the values in labview, the encoders read steadily until 20833.3 clicks per second. When going above that, the values jump from 20833.3 to 41666.7 clicks per second.

Any thoughts or answers???

The counting circuits in the FPGA are only good to 40000 counts per sec. How fast is your wheel turning? You had better use the k1X setting. We are going with 32 cpr encoders for this reason.
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