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I have had success driving all three stepper motors with the USB stepper motor controller. Very easy to install the drivers for Windows XP pro. I also copied the runtimes and library files so that i can write my own tracking and focussing program in .net
I looked hard at everything and thought how do i work out what wire (there were 5 on some and 6 on another) activated which coil????
found a link that i have just added to the thread.
Basically, you find the common wire as it has half the reisitance compared to the other pairs of wire, and then by putting 12v on that common wire and grounding the other wires one by one, you can work out the sequence or order of coils. I have made the decision that clockwise is forward and anti clock is backwards, so therefore if you find that it is running backward, swap wire 2 with 4 or 1 with 3.
had bought my 12V 7AH battery from jaycar a few weeks back, soldered some terminals on and connected to controller. connected to computer, loaded up the little program they include with the controller, pulled the wires for the coils out of the power area (when i was deciphering the order) and put them into remaining 4 holes.
set the number of steps and pressed "forward" and voila, it turned beautifully.
$85 plus freight + very satisfied = very good value!!!!
I have no worries at this stage recommending. I will be attempting to direct couple one of the steppers to the crayford focusser tomorrow and get a feel for how accurate 1.8 and .9 degree steps are.
Very happy!
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