hello, i am new on pollulu/motor and i am try to use 3 or 4 old stepping motor kp56lm2-097
Unipolar / 2 phases 6 Volts DC (nom) 1.2 Amps / Phase (nom) 2.4 Amps /
Motor 1.8 Degree/Step 80 oz/Inch
200 steps per rev.
2 1/4 inch. diameter 2 1/4 inch. length (excluding shafts) Size 2.2 sqi Double shaft NEMA 23 size motors
11/16 inch Shaft length.
i made it a new cnc router and the controller will be a cnc arduino shield v3.0 with 4 dvr 8825
i am try to figure out the right Vref. i set it the vref at 1.2vdc and the motor its not going hot but the drv8825 start to get hot. i am not sure if i need a bigger power supply or not. i use 12vdc right now.
i only tested on one stepper motor so far .
did i set the vref right or wrong , whats the formula to figure out the right Vref and the power supply should i get something higher that 12vdc. ???