Hi all,
In case you ever need a stepper motor controller you might be interested in the following Ebay item,
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It can be used in a programmable mode with internal microprocessor or by using external inputs for step, direction, sleep and enable interfacing directly to the stepper motor driver circuit.Motor voltage is from 7V to 30V with an adjustable max motor current up to
750mA and max step frequency is 500KHz.
Thanks for reading,
Pete