Try replacing your battery for starters. A few weeks ago I got called in because last years robot wasn't working - two motors turned just fine, but the other two didn't. Very odd problem that I spent an hour or so scratching my head over. We swapped Jags in an out, redid wiring, replaced the digital side car... it was a mess. Finally I decided to start completely over with the obvious things I assumed they had checked before calling me over... to find the battery extremely low (somewhere around 9 V, IIRC). Replaced it, and everything worked fine.
If the battery isn't your problem, you may need to calibrate your PWM inputs. You can find instructions for that on page 2 of the "Getting Started (MDL-BDC)" link here:
http://www.luminarymicro.com/jaguar
I would suggest spending a few more hours digesting the manual before you finalize your designs. You seem to have missed a few key rules. - GaryVoshol [more] 
31-01-2011, 10:28
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