Thread: Glitches Eliminated using Interrupt Context Saving, BUT ...
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Unread 11-12-2006, 20:57
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Teaching Teachers to Teach Tech
AKA: Jason Brett
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Re: Glitches Eliminated using Interrupt Context Saving, BUT ...
I don't have any specific answers to your question... however the approach our team is investigating is to use a custom circuit using a dedicated PIC to monitor the output from each gear tooth sensor. This allows you to oversample (provide one output, say, for every 20 gear teeth that go by... still plenty of precision, but 1/20th to work for the RC) and to simplify the output... IE pin1 goes high means the wheel went forward, pin 2 goes high, and it went backwards.

Initial tests look promising (they should... it is a fairly simple circuit, after all)... we're hoping to get something written up and posted here in the next few weeks.

Jason