Subject:
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Struggling with encoder wheel
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 11 Apr 2001 19:11:20 GMT
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Viewed:
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737 times
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I'm having a hard time finding a good algorithm for the encoder wheel
I came up with for use on my webcam. The way I packed the bits in the
lookup table has made it hard to get any speed out of the algorithms.
I'm using NQC, and the LEGO OS seems incredibly slow.
I've got a write-up with pictures on the whole thing at
http://www.fozztexx.com/LEGO/Webcam/
--
Chris Osborn Full System, Inc.
fozztexx@fullsystem.com 2160 Jefferson St., #240
http://www.fullsystem.com/ Napa, CA 94559
Webhosting that *works* - 99.99% uptime - First 3 months free
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Message has 2 Replies:
 | | Re: Struggling with encoder wheel
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| Pretty neat Chris. You've very nearly recreated a special kind of optical encoder that was developed by my former employers called a virtual absolute encoder. It didn't use diferent colors but it used a "time-window" to read the last few states off (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
| | | Re: Struggling with encoder wheel - Not anymore!
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| Well, I think I got it working last night. Many thanks to Steve Baker for the brilliant idea of hardcoding the lookup table array as a function. It works great! I had to gear down the rotation for the tilt mechanism, but the pan was fine as-is. When (...) (24 years ago, 14-Apr-01, to lugnet.robotics)
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