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-   -   Problems with Encoder Counting (http://www.chiefdelphi.com/forums/showthread.php?t=54015)

bjimster1 25-02-2007 21:45

Re: Problems with Encoder Counting
 
its probably too late now but what we ended up doing was getting a divider kit and calibrating using the LEDs on it to know if the encoder was in the correct position. Once the divider kit was installed i was able to install it with very little fidgeting.

whytheheckme 25-02-2007 21:52

Re: Problems with Encoder Counting
 
Quote:

Originally Posted by bjimster1 (Post 586361)
its probably too late now but what we ended up doing was getting a divider kit and calibrating using the LEDs on it to know if the encoder was in the correct position. Once the divider kit was installed i was able to install it with very little fidgeting.

Yes, BaneBots sells these divder cards Here

If you order them ASAP, banebots can get them to you, and you should be able to install them in just a few minutes when you get to your competition.

Jacob

purduephotog 28-02-2007 08:29

Re: Problems with Encoder Counting
 
Quote:

Originally Posted by whytheheckme (Post 586369)
Yes, BaneBots sells these divder cards Here

If you order them ASAP, banebots can get them to you, and you should be able to install them in just a few minutes when you get to your competition.

Jacob

After assembly, of course....

Joohoo 28-02-2007 08:36

Re: Problems with Encoder Counting
 
I would be wary about using those in a competition though, 424 used them and they unexpectedly stopped working. I they weren't designed to be on a robot in a competition it was designed to be a bench diagnostic tool. but that was my experience not sure if anything stupid was done between uses.

mluckham 07-03-2007 09:59

Re: Problems with Encoder Counting
 
The Banebot encoders worked fine for us. Calibration was fairly simple, using a USB oscilloscope. Counts are accurate, even with both wheels at maximum speeds. We didn't have to use the divide-by-ten circuits.

The only time we had trouble with counts in one direction only, was when a plug pulled loose or a signal wire came off the Robot Controller. Make sure the plug is pushed in very firmly, until it clicks.

Mechanically, they should be fine as long as (a) the plastic case surrounding them is not damaged during competition, (b) the encoder wheels or infrared pickups are damaged during motor change-out or excessive shaft play.


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