There are some hints about acceleration and high torque in the specs as well.
Full disclosure: I am not sure what to do with this info, I am not an electrical engineer. Now, I have tried to write a simple python script to drive the stepper. However, all my best efforts ended up with the motor vibrating.
import RPi.GPIO as GPIO import time delay = 0.005# time to settle drv_m1 = 8 #GPIO08 drv_step = 20 #GPIO20 drv_dir = 26 #GPIO26 drv_nfault = 21 #GPIO21 def setup(): GPIO.setmode(GPIO.BCM) GPIO.setup(drv_m1, GPIO.OUT, initial=GPIO.LOW) GPIO.setup(drv_step, GPIO.OUT,initial=GPIO.LOW) GPIO.setup(drv_dir, GPIO.OUT, initial=GPIO.HIGH) GPIO.setup(drv_nfault, GPIO.OUT, initial=GPIO.HIGH) setup() try: while 1: GPIO.output(drv_step, 1) time.sleep(delay) GPIO.output(drv_step, 0) time.sleep(delay) except KeyboardInterrupt: pass GPIO.cleanup()
I have tried a varius delay values (between 0.0001 and 0.1) and tried out using PWM with frequencies as low as 100hz to 14000hz with no luck.
Any ideas what could be causing the problem here?