Code

from Adafruit_IO import Client, Feed, Data, RequestError
ADAFRUIT_IO_USERNAME = 'gloowb'
ADAFRUIT_IO_KEY = '' #Differs for different accounts
aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)

from time import sleep
import RPi.GPIO as GPIO
import wiringpi

DIR = 11        # Direction GPIO Pin
STEP = 13       # Step GPIO Pin
CW = 1          # Clockwise Rotation
CCW = 0         # Counterclockwise Rotation
ENABLE = 15

# use 'GPIO naming'
wiringpi.wiringPiSetupGpio()

# set #12 to be a PWM output
wiringpi.pinMode(12, wiringpi.GPIO.PWM_OUTPUT)

# set the PWM mode to milliseconds stype
wiringpi.pwmSetMode(wiringpi.GPIO.PWM_MODE_MS)

# divide down clock
wiringpi.pwmSetClock(192)
wiringpi.pwmSetRange(2000)

delay_period = 0.01

# for the stepper motor
STEPS_PER_CM = 20000
delay = 0.000001

button = (1.6, 3.8, 4.44, 5.96, 0 )  # Distance to buttons in cm (0 means the button doesn't exist)
fan_speed = 0   # Monitors the current fan speed

GPIO.setmode(GPIO.BOARD)
GPIO.setup(DIR, GPIO.OUT)
GPIO.setup(STEP, GPIO.OUT)
GPIO.setup(ENABLE, GPIO.OUT)

GPIO.output(ENABLE, GPIO.HIGH) #disable stepper motor driver

try:
    digital = aio.feeds('fan')
    print("Connected")
except RequestError:
    feed = Feed(name="Fan")
    fan = aio.create_feed(feed)

def press(dist):
    step_count = int(dist*STEPS_PER_CM)
    GPIO.output(ENABLE, GPIO.LOW)
    sleep(1)
    GPIO.output(DIR, CCW)

    print("Moving CW")
    for x in range(step_count):
        GPIO.output(STEP, GPIO.HIGH)
        sleep(delay)
        GPIO.output(STEP, GPIO.LOW)
        sleep(delay)

    GPIO.output(ENABLE, GPIO.HIGH)
    sleep(1)

    print("Pushing button")
    for pulse in range(150, 0, -1):
            wiringpi.pwmWrite(12, pulse)
            sleep(delay_period)
    sleep(2)
    for pulse in range(0, 150, 1):
            wiringpi.pwmWrite(12, pulse)
            sleep(delay_period)
    sleep(2)

    GPIO.output(ENABLE, GPIO.LOW)
    sleep(0.2)
    GPIO.output(DIR, CW)
    print("Moving CCW")
    for x in range(step_count):
        GPIO.output(STEP, GPIO.HIGH)
        sleep(delay)
        GPIO.output(STEP, GPIO.LOW)
        sleep(delay)
    GPIO.output(ENABLE, GPIO.HIGH)
    sleep(0.2)
   # GPIO.cleanup()



while True:
    data = aio.receive(digital.key)
    speed = int(data.value)
    print(speed)

    if speed == fan_speed:
                print("The fan is already at that speed.")
    elif speed >= 0 and speed <= 4 and button[speed] != 0:
                fan_speed = speed
                print(button[speed])
                print("Type is", type(button[speed]))
                press(button[speed])
    else:
                print("Sorry, that fan speed doesn't exist. Please try again.")
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