Telegram LED Matrix Display With Raspberry Pi

bot.py

#!/usr/bin/env python

import logging

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

from telegram import ChatAction
from telegram.ext import Updater, CommandHandler, MessageHandler, Filters

logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO)
logger = logging.getLogger('matrix')

serial = spi(port=0, device=0, gpio=noop())
device = max7219(serial, cascaded=4, block_orientation=-90, rotate=2)
updater = Updater(token='..........................')
dispatcher = updater.dispatcher


def start(update, context):
    context.bot.send_message(chat_id=update.effective_chat.id, text="Enter text to show it on the matrix display")


start_handler = CommandHandler('start', start)
dispatcher.add_handler(start_handler)


def echo(update, context):
    text = update.message.text
    try:
        logger.info('Displaying "%s"', text)
        update.message.reply_text("Displaying: {0}".format(text))
        context.bot.send_chat_action(chat_id=update.effective_message.chat_id, action=ChatAction.TYPING)
        show_message(device, text, fill="white", font=proportional(CP437_FONT), scroll_delay=0.1)
        logger.info('Done "%s"', text)
        update.message.reply_text("Done: {0}".format(text))
    except Exception as error:
        logger.warn('Error displaying "%s": %s', text, error)
        update.message.reply_text("Error: {0}".format(error))


echo_handler = MessageHandler(Filters.text & (~Filters.command), echo)
dispatcher.add_handler(echo_handler)

updater.start_polling()