PiStep2.py

# Stel de GPIO pinnen in voor de stappenmotor:

import sys
import time
import RPi.GPIO as GPIO
 
# Use BCM GPIO references
# instead of physical pin numbers
GPIO.setmode(GPIO.BCM)
StepPins = [23,24,25,4]
 
# Set all pins as output
for pin in StepPins:
  GPIO.setup(pin,GPIO.OUT)
  GPIO.output(pin, False)
 
# Define advanced sequence
# as shown in manufacturers datasheet
Seq = [[1,0,0,1],
       [1,0,0,0],
       [1,1,0,0],
       [0,1,0,0],
       [0,1,1,0],
       [0,0,1,0],
       [0,0,1,1],
       [0,0,0,1]]
 
StepCount = len(Seq)
StepDir = 1 # Set to 1 or 2 for clockwise
            # Set to -1 or -2 for anti-clockwise

WaitTime = 0.001
 
# Initialise variables
StepCounter = 0
 
# Start main loop
while True:

  for pin in range(0, 4):
    xpin = StepPins[pin]#
    if Seq[StepCounter][pin]!=0:
      GPIO.output(xpin, True)
    else:
      GPIO.output(xpin, False)
 
  StepCounter += StepDir
 
  # If we reach the end of the sequence
  # start again
  if (StepCounter>=StepCount):
    StepCounter = 0
  if (StepCounter<0):
    StepCounter = StepCount+StepDir
 
  # Wait before moving on
  time.sleep(WaitTime)