Charles Steinkuehler <char...@steinkuehler.net> writes:

>I'm really thinking more about the folks approaching LinuxCNC from the
>3D printing / Desktop CNC world, which seems to revolve around stepper
>motors, Polou microstep drivers, and Arduinos.
 
The RepRap folks are using the ATmega 644P, which has more I/O pins than
the Arduino, but less than the Mega (which is an ATmega 1280). And 
they're not running an operating system, so there's less overhead.

I don't know about most people, but I can get stacks of used stepper
motors more or less for free. I don't have a source for free servos 
and/or encoders.


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