What's really the best way to control a motor with an Arduino or other microcontroller?

[wkrug]

You can use an ARDUINO with an ATXMEGA Controller.
This has D/A Converter on Board and can spit out Voltage direct without PWM.

 

[HR19]

You can use an ARDUINO with an ATXMEGA Controller.
This has D/A Converter on Board and can spit out Voltage direct without PWM.

That chip is only 3.3V, but it was a good suggestion, thanks.