Thanks,
So if I hook it up to a decent 12V (the motor is rated for 12V, 0,3A) I can expect higher rpm and torque, with less steps missed?
I'm pretty new to this, could you give me some general figures about achievable speeds?
Also I've noticed that the motor runs smoothly for a couple of cycles but every now and then has a hiccup where it appears to stall for fraction of a second, only to continue spinning. I'll happily attribute all of this to a crappy power supply.