Ah good point. When the current is really low (slow motor), the motor doesn't have enough momentum from a dead stop to get moving.
There might be an analog way to fix it but it's beyond me. You might have to deal with PWM (digital), the dreaded Arduino.
this might work, a 12V pwm motor controller for cheap
[Ebay Link Removed]
360685305289 <- this at least has english on the board.
There are some on amazon as well.
Last edited by Darkblade48; 07-13-2013 at 07:27 AM.
Reason: Please use the edit function for back to back posts to keep threads cleaner