A modified version of Stepper Motor Controller.vi created by Rymanvw is arttached. This version proves Labview should not be used to generate step pulses. Instead the step pulses must be generated on an Arduino board. The speed of the LIFA limits the maximum step speed to about 30 steps per second. This speed is barely useable with full steps and intolerable with micro steps.
For more information on the BigEasyDriver PCB see Sparkfun.
Howard
