Byron A Jeff wrote:

> > Hi, great to see the robot lawnmower taking shape!
> > If you haven't put too much work into the drive motor
> > h-bridges, I would suggest using the more old fashioned
> > system, ONE transistor with PWM to drive the motor,
> > and a cheap relay to reverse the motor wires.
>
> Hmmm. I was thinking about the relay route. I got bogged down in trying to
> figure out a simple control box for the beast.
>
> PWM isn't an issue. I plan to run full bore all the time.


It's still worth thinking about PWM and a transistor
for each motor. This gives you soft-start and some
control over robot speed, I really think before the
robot is perfect you will be enjoying those features...
:o)
-Roman

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