Can a simple delay microseconds do the trick
So would a more complex PWM get around this problem?
You might just want a lower current wall wart. The Arduino analogWrite will change your average current, but it will more directly change your voltage. So if you need a 12v power supply for the stepper, the PWM from Arduino will drop the voltage and give your problems with the stepper. Or you could build a current limiting circuit on your device, but that will probably also get hot. If you're just testing and you have no other power supply, try hooking up a few other devices to your supply to drop the current.
Quote from: ifugaopapercraft on Mar 28, 2013, 05:00 pmCan a simple delay microseconds do the trick No because there is no feedback as to the load it is under.
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