Displaying Telegram text on MAX7219 dot matrix using Raspberry Pi.

RPiTelegramDotMatrix.py

from gpiozero import Buzzer
from time import time, sleep, strftime
from datetime import datetime
import telepot

from luma.core.interface.serial import spi, noop
from luma.core.render import canvas
from luma.core.virtual import viewport
from luma.led_matrix.device import max7219
from luma.core.legacy import text, show_message
from luma.core.legacy.font import proportional, CP437_FONT, LCD_FONT

serial = spi(port=0, device=0, gpio=noop())
device = max7219(serial, width=32, height=8, block_orientation=-90)
device.contrast(5)
virtual = viewport(device, width=32, height=16)

buzzer = Buzzer(26)

def handle(msg):
  global telegramText
  global chat_id
  global showMessage
  
  chat_id = msg['chat']['id']
  telegramText = msg['text']
  
  print('Message received from ' + str(chat_id))
  
  if telegramText == '/start':
    bot.sendMessage(chat_id, 'Welcome to Idris Dot Matrix Bot')
  
  else:
    buzzer.beep(0.1, 0.1, 2)
    showMessage = True
    bot.sendMessage(chat_id, 'Text received.')

bot = telepot.Bot('PUT YOUR TELEGRAM BOT TOKEN HERE')
bot.message_loop(handle)

show_message(device, 'Telegram Bot Ready!', fill="white", font=proportional(LCD_FONT), scroll_delay=0.05)

showMessage = False
count = 0

try:
    while True:
        if showMessage == True:
            show_message(device, telegramText, fill="white", font=proportional(LCD_FONT), scroll_delay=0.1)
            count = count + 1
            if count == 3:
                count = 0
                showMessage = False
        else:
            with canvas(virtual) as draw:
                #text(draw, (0, 1), "Idris", fill="white", font=proportional(CP437_FONT))
                text(draw, (0, 1), datetime.now().strftime('%I:%M'), fill="white", font=proportional(CP437_FONT))

except KeyboardInterrupt:
    show_message(device, 'Thanks...', fill="white", font=proportional(LCD_FONT), scroll_delay=0.05)