SPI conflict: nRF24L01+ wants the same pins as my MAX7219 LED dot matrix display
รอเรือ last edited by รอเรือ
My MAX7219 LED dot matrix display is working great using hardware SPI using pin 11 for MOSI and pin 13 for SCK on a Arduino NANO.
Now, I'd like to use a nRF24L01+ radio as well which also claims using the same ports 11 and 13 for MOSI and SCK.
MAX7219 can use software SPI instead so that I can use any digital pins of the Arduino. The problem is that when using software SPI it turns out to be slower and it doesn't look well on my double height display (2x8 matrixes). The upper part of the double height display lags. Therefore I'd like to use pin 11 and pin 13 for the MAX7219 LED dot matrix display but AFAIK the radio must use the same pins.
Any ideas how that can be solved?!
รอเรือ last edited by
@mfalkvidd Thanks a lot!
I just made some tests and it looks promising.