Arduino 101 vs 8x8 Led Matrix (MAX7219)

Official Hardware Retired 101
1

Hello!

I've got an Arduino 101 and, I'm trying make it work with a 8x8 Led Matrix Shield (a chinese one, with an max7219 drive).

The problem is: Its doesn't works! I tried lot, search a lot, and.. nothing. I make the connections, and nothing works (sometimes just blink when I restart..)

The strange thing is: In my Arduino Uno the very same shild/connections works fine. I think that maybe its a issue with Arduino 101.

I have the pins: Clk (6), CS (5) and Data/Din(12).
The library I'm working is LedControl.h

Anyone have found the same problem, or know how to solve this issue?

Thanks a Lot! :slight_smile:

2

A UNO is AVR specific and the 101 is a totally different CPU architecture and also 3.3 volt based.

Make sure your sketch and libs are compliant with the 101 architecture and that you have the correct voltage present on the correct pins.

You are talking about two very different animals here.
I have LCD shields that work fine on the AVR boards but not on the 101 or YUN.