Can this driver be used with 4 or 8 wire motors?
The project as per the schematic posted, uses a unipolar stepper motor. An 8 leads stepper can be used both as unipolar or bipolar depending how you connect the wires.
The 4 wires one is only bipolar and cannot be used with the circuit as shown in the project.
If you replace the four power darlingtons with two hbridges then you can drive bipolar stepper.
Can the microstepping be changed to 1/10
No. The code posted will accept only three modes: Full step - Half step and micro step (1/20)
Can the driver be modified to be used with step/direction signals?
No with the code posted.
What is the maximum Current/Voltage the circuit can handle?
This will depend from the size of the power transistor or mosfet and thermal dissipator that you will use.
Cheers
Al.
Last edited by aratti; - 20th November 2010 at 17:21.
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