I agree with Stephen J, a single power supply is a bad idea. The amount of power lost to heat in a voltage divider system would be considerable.
In terms of not frying your control system, you also need to ensure that the steppers you are looking at are able to be wired to the board. Then you also must ensure that the steppers are connected correctly (phase A to phase A and so on), or the controller will suffer damage. If the documentation you have does not include the pin-out for the stepper hook up, you will have to contact the seller and get it. |