I am driving a few stepper motors using a A4988 chip, and my motors are unipolar. The driver I chose is bipolar, so, obviously, I've decided to drive it as a bipolar stepper by leaving out two of the leads. (Haven't decided which to do; one way will increase torque and another will increase speed.) Do I need decrease the current that the chopper driver can supply to prevent damaging my motor?
EDIT: I'm concerned that the current from energising double the amount of coil at one time that if I drive it at 1.5 A, then it will overheat because of resistance. Someone has said that since there is more resistance then you can technically run it on a lower current because of ohms law with the same voltage... blah blah blah. But since I have a chopper drive... please inform me on how much current is safe. Could I add an external heatsink somewhere to be safe?