Moderator: igrr
I wrote a little library which talks to a MAX7219 over SPI to drive a 8x8 led matrix. You can find the code here:
https://github.com/squix78/MAX7219LedMatrix
and the explanation/wiring here:
http://blog.squix.ch/2015/04/esp8266arduino-max7219-8x8-led-matrix.html
Please note: the currently released version comes with an incomplete SPI library. So you'll have to patch it with the one from github or build it from scratch in the first place...
I wish to interrogate a Bosch barometric pressure module.
Hope to be able to replicate Your success.
I'm running under Windows, does that matter?
And, is this patch needed for the 1.6.1 Arduino or the 1.6.4 version, or both?