piclist 2001\01\30\210355a >
Thread: PIC Robot Update
face BY : Roman Black email (remove spam text)

Peter L. Peres wrote:
> >I have used a "trim" series resistor at times
> >(very low ohms) to make two motors run at the same
> >speed, assuming relatively constant load. The
> >other solution of course is to go to proper
> >encoders with closed loop speed control.
> No, the other solution is to connect the motors together in parallel using
> a relay or by putting the resistor in series with the supply of the two
> H-bridges. Or by using crappy batteries which will be like the resistor,
> only better ;-).

How is this going to fix it? I have bought numerous
small DC motors and the big problem with differential
drive is that for an identical voltage the two motors
run at fractionally different speeds. :o)

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