import pyfirmata
 
# Definition of the analog pin
PINS = (0, 1, 2, 3)
 
# Creates a new board 
board = pyfirmata.Arduino(/dev/ttyACM0)
print "Setting up the connection to the board ..."
it = pyfirmata.util.Iterator(board)
it.start()
 
# Start reporting for defined pins
for pin in PINS:
    board.analog[pin].enable_reporting()
 
# Loop for reading the input. Duration approx. 10 s
for i in range(1, 11):
    print "\nValues after %i second(s)" % i
    for pin in PINS:
        print "Pin %i : %s" % (pin, board.analog[pin].read())
    board.pass_time(1)
 
board.exit()

import pyfirmata
 
# Time (approx. seconds) to get to the maximum/minimum
DURATION = 5
# Numbers of steps to get to the maximum/minimum
STEPS = 10 
 
# Creates a new board and define the pin
board = pyfirmata.Arduino(/dev/ttyACM0)
digital_0 = board.get_pin('d:11:p')
 
# Waiting time between the 
wait_time = DURATION/float(STEPS)
 
# Up
for i in range(1, STEPS + 1):
    value = i/float(STEPS)
    digital_0.write(value)
    board.pass_time(wait_time)
 
# Down
increment = 1/float(STEPS)
while STEPS > 0:
    value = increment * STEPS
    digital_0.write(value)
    board.pass_time(wait_time)
    STEPS = STEPS - 1
 
board.exit()

import pyfirmata
 
PIN = 12
DELAY = 2
PORT = '/dev/ttyACM0'
 
board = pyfirmata.Arduino(PORT)
 
while True:
    board.digital[PIN].write(1)
    board.pass_time(DELAY)
    board.digital[PIN].write(0)
    board.pass_time(DELAY)