Hi Kevin,
If I insist it is because i read it in your tutorial :
quote:“
What is the first thing you always do with any system. Calibrate it!
After hooking the board up like this you should plug everything in and there should be a current registering on the DMM
(Digital Multi Meter) probably around ~0.500 A. You will see this even though the motor will not move. That is because
there is a current required to hold the motor in place. If you don’t see a current then something is wrong. Check everything.
Once you see a current adjust the potentiometer (the only thing that will accept a phillips screw driver) slowly until you see
the value that is 0.7 * the rating of your stepper motor coils. (or less)
12 Volts is arbitrary but easy to get access to with a ATX power supply.”
Here the source A4983 and A4988 Getting Started Guide in the first pdf file.
I can set the current to 1.8 as you said but I already burn one, and this is my last one, moreover if what you’re saying is true, the pdf should be updated for more clarity.
Regards,