pyfirmata_sample.py

#!/usr/bin/env python
import time

from pyfirmata import Arduino

if __name__ == '__main__':
    port = '/dev/ttyACM0'

    board = Arduino(port)

    r = board.get_pin('d:9:p')
    g = board.get_pin('d:10:p')
    b = board.get_pin('d:11:p')

    while True:
        for i in range(0, 128):
            print(i)

            r.write(i/128.0)
            b.write(i/128.0)
            g.write(i/128.0)

            time.sleep(0.01)