MAX7219 driver for 7-segment displays

All ESP32 boards running MicroPython.
Target audience: MicroPython users with an ESP32 board.
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Gallium Arsenide
Posts: 2
Joined: Thu Apr 08, 2021 6:44 pm

MAX7219 driver for 7-segment displays

Post by Gallium Arsenide » Thu Apr 08, 2021 6:52 pm

Hi,

Does anyone know of a current driver/library for MicroPython on the ESP32 for the MAX7219 7-segment display? This one here: https://esphome.io/components/display/max7219.html

Image

I tried the below two but they are outdated and don't work anymore on the newer releases of MicroPython. (Unfortunately I am not technically smart enough to be able to update these to work)

- https://github.com/JennaSys/micropython-max7219
- https://github.com/pdwerryhouse/max7219_8digit

Thanks in advance for your time!

JennaSys
Posts: 33
Joined: Tue Jul 15, 2014 8:29 am
Location: Southern California, US
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Re: MAX7219 driver for 7-segment displays

Post by JennaSys » Wed Jun 23, 2021 5:15 am

I just saw this post and was wondering what issue you were having with this one:
https://github.com/JennaSys/micropython-max7219

I know there is an open issue with the digits being reversed because I think those modules are wired backwards, but if there was something else please open an issue on github. I haven't been working with the max7219 so didn't get to doing the workaround yet, but I have a new project I'm working on with it and will be addressing the open issue.
John Sheehan

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