[Andy A.]

The Edubot controller (at least the old pbasic version, and likely the newer C based board) outputs a PWM signal that is compatible with most hobby speed controllers. Likewise, most R/C systems made for model car use can drive a Victor with out any additional electronics (not true for many R/C systems used for aircraft).

So the Edubot controller will drive a typical R/C speed controller. Whether or not that will work at for you is harder to say. If you're willing to run the motor off a standard RC pack (7.2 volts) then there shouldn't be a problem. It will probably work with 6 volts. Although it seems to me that your current draws are so low that a full sized hobby speed controller may be overkill.

Also, make sure that if you choose to use a hobby speed controller, you get one that is capable of reverse.

I would recommend against trying to run a motor right from the PWM header. The switching frequencies are different and trying to draw that much current from the controller strikes me as likely to cause problems. Certainly, the pwm outputs were not meant to drive anything larger then a servo, and those have their own circuitry to actually control speed and position.

-Andy A.