gistfile1.txt

#!/usr/bin/python -u
import time

print """                       _
                     ,' '.
                    /     \\ 
                  ^ |  _  | ^
                 | || / \\ || |
                 | |||.-.||| |
                 | |||   ||| |
                 | |||   ||| |
                 | |||   ||| |
                 | |||   ||| |
                 | ,'     '. |
                 ,'__     __`.
                /____  |  ____\\ 
                 /_\\ |_|_| /_\\ 
"""

import RPi.GPIO as GPIO
import time
import pygame.mixer


UP_STEPS = {{ STEPS }}
DOWN_STEPS = {{ STEPS }}


GPIO.setmode(GPIO.BCM)

enable_pin = 18
coil_A_1_pin = 4
coil_A_2_pin = 17
coil_B_1_pin = 23
coil_B_2_pin = 24

coil_led = 25


GPIO.setup(enable_pin, GPIO.OUT)
GPIO.setup(coil_A_1_pin, GPIO.OUT)
GPIO.setup(coil_A_2_pin, GPIO.OUT)
GPIO.setup(coil_B_1_pin, GPIO.OUT)
GPIO.setup(coil_B_2_pin, GPIO.OUT)

GPIO.setup(coil_led, GPIO.OUT)

GPIO.output(enable_pin, 1)


def blink(duration, frequency):
  GPIO.output(coil_led, 1)
  time.sleep(secs/2)
  GPIO.output(coil_led, 0)
  time.sleep(secs/2)


def backwards(steps):  
  for i in range(0, steps / 4):
    setStep(1, 0, 1, 0)
    setStep(0, 1, 1, 0)
    setStep(0, 1, 0, 1)
    setStep(1, 0, 0, 1)

def forwards(steps):  
  for i in range(0, steps / 4):
    setStep(1, 0, 0, 1)
    setStep(0, 1, 0, 1)
    setStep(0, 1, 1, 0)
    setStep(1, 0, 1, 0)

def setStep(w1, w2, w3, w4, delay=0.007):
  time.sleep(delay)
  GPIO.output(coil_A_1_pin, w1)
  GPIO.output(coil_A_2_pin, w2)
  GPIO.output(coil_B_1_pin, w3)
  GPIO.output(coil_B_2_pin, w4)

pygame.mixer.init(48000,-16, 1, 1024)

countdown = pygame.mixer.Sound("launch.wav")
blast = pygame.mixer.Sound("BlastOff.wav")
land = pygame.mixer.Sound("Journey.wav")

channelA = pygame.mixer.Channel(1)

channelA.play(countdown)
# blink(11.0, 0.5)
time.sleep(11)


channelA.play(blast)
backwards(DOWN_STEPS)


channelA.fadeout(5000)
time.sleep(10)

channelA.set_volume(1.0)
channelA.play(land)
forwards(UP_STEPS)

GPIO.cleanup()

time.sleep(10)
channelA.fadeout(5000)