i am using wantai 42BYGHW609 nema 17 motors (3,7V 1,7A 1,8Degree/step) with A4988 which has rs=0,2 ohm on RAMPS 1.4 and 12V 20A Power source. I couldn’t move the motors. Motors start vibrating and the stepstick starts heating up quickly even it has even cooler on.
I am using marlin firmware on reprap prusa i3. All the stepstick jumpers are on RAMPS 1.4 and using 1/16 microstep mode. I have tried pot on stepstick to turn up or down but it does not change. Also i can set the pot max 1,6V.
I have tried setting pot 0,2V up to 1,6V which is max on stepstick.
I have tried different A4988 Pololu stepsticks.
Current firmware codes for stepper is "The axis per step per unit values are (80,80,4000,1000)."
I have tried “The axis per step per unit values are (200,200,2560,1000).” and also other different numbers for step.
Please anyone has a knowledge could help?