Python code for pi with adafruit stepper motor and limit switches using keyboard for f/r/l/r motion

Community Development Platforms
1

This is part of a main project I have going but the limit switch stepper motor travel setup is not something I have seen posted anywhere. Enjoy.

#!/usr/bin/python

import cwiid
import RPi.GPIO as GPIO
import sys
from time import *
import subprocess
import board

#this is for stepper motor controls, keyboard initiates movement, Button is limit switches
import keyboard

#gpiozero is the only library I have found that functions with the current pi and hardware setup I am using
from gpiozero import Button

#these are part of the Blinka libraries Adafruit has.  
from adafruit_motorkit import MotorKit
from adafruit_motor import stepper
kit1 = MotorKit()

# this is for stepper motors and servo board
from board import SCL, SDA
import busio
from adafruit_pca9685 import PCA9685
i2c_bus = busio.I2C(SCL, SDA)
pca = PCA9685(i2c_bus)
pca.frequency = 50

# standard servo declearations for controls
from adafruit_servokit import ServoKit
kit = ServoKit(channels=16)

#12 and 13 are for one motion assembly backing up one full turn
button12 = Button(12)
button13 = Button(13)
#27 and 5 are for the other motion assembly
button27 = Button(27)
button5 = Button(5)
# while True loops endlessly.  This can be run as a service using systemd or setup as an init.d script or as an rc.local script.
while True:

  if button12.is_pressed:
    print("button12 pressed")
    for i in range (200):
      kit1.stepper1.onestep(direction=stepper.BACKWARD, style=stepper.DOUBLE)

  if button13.is_pressed:
    print("button13 pressed")
    for i in range (200):
      kit1.stepper1.onestep(direction=stepper.FORWARD, style=stepper.DOUBLE)

  if keyboard.is_pressed('f'):
    print("f is pressed")
    for i in range (200):
      kit1.stepper1.onestep(direction=stepper.BACKWARD, style=stepper.DOUBLE)

  if keyboard.is_pressed('b'):
    print("b is pressed")
    for i in range (200):
      kit1.stepper1.onestep(direction=stepper.FORWARD, style=stepper.DOUBLE)

# This is for channel 2 stepper motor.  

  if button27.is_pressed:
    print("button12 pressed")
    for i in range (200):
      kit1.stepper2.onestep(direction=stepper.BACKWARD, style=stepper.DOUBLE)

  if button5.is_pressed:
    print("button13 pressed")
    for i in range (200):
      kit1.stepper2.onestep(direction=stepper.FORWARD, style=stepper.DOUBLE)

  if keyboard.is_pressed('r'):
    print("f is pressed")
    for i in range (200):
      kit1.stepper2.onestep(direction=stepper.BACKWARD, style=stepper.DOUBLE)

  if keyboard.is_pressed('l'):
    print("b is pressed")
    for i in range (200):
      kit1.stepper2.onestep(direction=stepper.FORWARD, style=stepper.DOUBLE)
2

Very cool, thanks for posting!