MorseBorgFinal - Turn your Raspberry Pi into a Morse coding machine

So you have a PicoBorg and want to do something that is not motor based?
Maybe you have seen MorseBorg and want something other than LEDs talking morse?

Well here we have a PicoBorg morse solution, intended for driving a buzzer, solenoid, or any other signalling device (maybe some kind of Aldis lamp)?

Same principle as the previous versions, but now you run the script and then keep giving it input until you have finished the conversation, why not try talking with your mate across the road using bulbs!

Here's the code, you can download the MorseBorgFinal script file as text here
Save the text file on your pi as MorseBorgFinal.py
Make the script executable using
chmod +x MorseBorgFinal.py
and run using
sudo ./MorseBorgFinal.py

#!/usr/bin/env python
# coding: Latin-1

# Import libary functions we need
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
import time

# Set which GPIO pins the drive outputs are connected to
DRIVE_1 = 4
DRIVE_2 = 18
DRIVE_3 = 8
DRIVE_4 = 7

# Set all of the drive pins as output pins
GPIO.setup(DRIVE_1, GPIO.OUT)
GPIO.setup(DRIVE_2, GPIO.OUT)
GPIO.setup(DRIVE_3, GPIO.OUT)
GPIO.setup(DRIVE_4, GPIO.OUT)

# Function to set all drives off
def MotorOff():
    GPIO.output(DRIVE_1, GPIO.LOW)
    GPIO.output(DRIVE_2, GPIO.LOW)
    GPIO.output(DRIVE_3, GPIO.LOW)
    GPIO.output(DRIVE_4, GPIO.LOW)

# Configuration
dotPeriod = 0.2                     # Length of time used by a dot
morseDrive = DRIVE_1                # Which output to use on the PicoBorg

# Morse key
dMorse = {' ':' ',
          'A':'.-',
          'B':'-...',
          'C':'-.-.',
          'D':'-..',
          'E':'.',
          'F':'..-.',
          'G':'--.',
          'H':'....',
          'I':'..',
          'J':'.---',
          'K':'-.-',
          'L':'.-..',
          'M':'--',
          'N':'-.',
          'O':'---',
          'P':'.--.',
          'Q':'--.-',
          'R':'.-.',
          'S':'...',
          'T':'-',
          'U':'..-',
          'V':'...-',
          'W':'.--',
          'X':'-..-',
          'Y':'-.--',
          'Z':'--..',
          '1':'.----',
          '2':'..---',
          '3':'...--',
          '4':'....-',
          '5':'.....',
          '6':'-....',
          '7':'--...',
          '8':'---..',
          '9':'----.',
          '0':'-----',
          '.':'.-.-.-',
          ',':'--..--',
          '?':'..--..',
          "'":'.----.',
          '!':'-.-.--',
          '/':'-..-.',
          '(':'-.--.',
          ')':'-.--.-',
          '&':'.-...',
          ':':'---...',
          ';':'-.-.-.',
          '=':'-...-',
          '+':'.-.-.',
          '-':'-....-',
          '_':'..--.-',
          '"':'.-..-.',
          '$':'...-..-',
          '@':'.--.-.'}

try:
    # Start by turning all drives off
    MotorOff()
    raw_input('You can now turn on the power, press ENTER to continue')
    while True:
        # Read in the next message
        plain = raw_input("Next message (blank to quit)> ")
        if len(plain) == 0:
            break
        # Cycle through each letter in the message
        for letter in plain:
            # Find the coded morse to use
            key = letter.upper()
            if dMorse.has_key(key):
                coded = dMorse[key]
                print '%s %s' % (letter, coded)
            else:
                coded = ' '
                print '%s ???' % (letter)
            # Run the morse sequence
            for symbol in coded:
                if symbol == '.':
                    GPIO.output(morseDrive, GPIO.HIGH)
                    time.sleep(dotPeriod)
                    GPIO.output(morseDrive, GPIO.LOW)
                    time.sleep(dotPeriod)
                elif symbol == '-':
                    GPIO.output(morseDrive, GPIO.HIGH)
                    time.sleep(dotPeriod * 3)
                    GPIO.output(morseDrive, GPIO.LOW)
                    time.sleep(dotPeriod)
                elif symbol == ' ':
                    time.sleep(dotPeriod * 7)
                time.sleep(dotPeriod * 3)
    MotorOff()
    raw_input('Turn the power off now, press ENTER to continue')
    GPIO.cleanup()
except KeyboardInterrupt:
    # CTRL+C exit, turn off the drives and release the GPIO pins
    print 'Terminated'
    MotorOff()
    raw_input('Turn the power off now, press ENTER to continue')
    GPIO.cleanup()