I have a 2 wheel driven differential drive for my robot. True straight line accuracy is not good enough without encoder feedback to the DC motors, but simple Accel/Decel Control and Progressive Steering changes are easy to achieve.
I would like to change to Stepper motor drives using the Allegro A4984: DMOS Microstepping Driver with Translator and Overcurrent Protection and the AcccelStepper library for the Arduino micro controller, using microstepping at the 8 microstep level.
Without the purchase (yet) of the Pololu A4988 micro stepper driver carrier and 12V~ 2A (+/-) steppers – does anyone know how well the Pololu driver carrier interfaces to the AccelStepper library ?
The step frequency limit at 4K/sec is OK, does any one have experience of the frame noise of either NEMA 17 or 23 steppers when running between 0 → 3K steps/sec ? Clearly some resonance bands will exist, but at what frequencies might they occurr for these frame sizes at the chosen microstep level.