#!/usr/bin/python3

import serial

with serial.Serial('/dev/ttyACM0') as ser:
    while True:
        for i in range(30): # selected LED
            for j in range(30): # LED
                for k in range(3): # colour
                    for l in range(2):
                        ser.write(b'f' if (i==j and k==1) else b'0')
                    ser.write(b'n')
                ser.write(b'l')
            ser.write(b'q')