MicroPython driver for MAX7219 8x8 LED matrix

This library provides support for the MAX7219 8x8 LED matrix on ESP8266 with MicroPython. It uses framebuf internally to provide drawing primitives and text support. You can chain several matrices the way you like: if you use two 4x 8x8 matrices, you can have one of the left, and the other on the right giving you a 64x8 area, or have one on top of the other to have a 32x16 display!

The library has only been tested on an ESP8266 (yet!) but may work on other systems.

Using 10000000 as baudrate is recommended as greater values don't seem to work well...

from machine import Pin, SPI
import max7219

spi = SPI(1, baudrate=10000000)
screen = Max7219(8, 8, spi, Pin(15))
screen.text('A', 0, 0, 1)
screen.show()

from machine import Pin, SPI
import max7219

spi = SPI(1, baudrate=10000000)
screen = Max7219(32, 8, spi, Pin(15))
screen.text('ABCD', 0, 0, 1)
screen.show()

from machine import Pin, SPI
import max7219

spi = SPI(1, baudrate=10000000)
screen = Max7219(64, 8, spi, Pin(15))
screen.text('ABCDEFGH', 0, 0, 1)
screen.show()

from machine import Pin, SPI
import max7219

spi = SPI(1, baudrate=10000000)
screen = Max7219(32, 16, spi, Pin(15))
screen.text('ABCD', 0, 0, 1)
screen.text('EFGH', 0, 8, 1)
screen.show()

This library is based on:

• Official Micropython SSD1306 driver
• micropython-max7219 by mcauser
• Redgick GFX by jlebunetel

Thank you for the inspiration!