https://gist.github.com/mipsparc/f2674a6abda841ef822ad3fc306dd514 から送信されたデータを受け取って表示する

mascon_read.py

#coding:utf-8

import serial

device = '/dev/ttyUSB0'
ser = serial.Serial(device, baudrate=9600)

mascon_level = -1 # init
static_mascon_level = -1 # init
buttons = -1;

same_count = 0;

while True:
    r = ser.read()

    mascon_new_level = ord(r) & 0b00001111 # 下位4bit
    same_count += 1
    if mascon_new_level != mascon_level:
        same_count = 0
        mascon_level = mascon_new_level
        
    if same_count == 3 and static_mascon_level != mascon_level:
        static_mascon_level = mascon_level
        print(str(mascon_level) + ' ノッチ')
    
    buttons_new = ord(r) >> 4
    if buttons_new != buttons:
        buttons = buttons_new
        #print('ボタン状態: ' + bytes(buttons))