My issue wasn’t with the shield soldering or my pin selection, is was that I’d stupidly used Arduino v12 to compile and upload the firmware, and as we all should know by now, that won’t work, you need arduino v11.
So I was able to crocodile clip a couple of pins as per Unspeds response on the forum…
(the positive side of the led’s to the SEG pins on the max72xx chip)
connect led matrix pins: 5,6,7,8,9,10,11,12
to arduinome pins 2,4,6,8,10,12,14,16 on the “IN” connector
(the negative side of the led’s to the DG pins on the max72xx chip)
connect led matrix pins: 1,2,3,4,21,22,23,24
to arduinome pins 2,4,6,8,10,12,14,16 on the “OUT” connector
Now I just need to find a nice solution to wire up to the led matrix, I think I’ll end up just soldering directly to the matrix a pair of ribbon cables.
Now once I had my matrix working with the test, I fired up monome_test to see out of curiosity what would happen if I wired one of my potentiometer between the two pins that used to be wired to a button. Well stuff happened, not really what I want, but it was interesting. I’ll take a video and post it over the weekend – not easy to explain.
Suffice to say I need some ideas for plugging 1 potentiometer per row and getting full left to full right equal 0 – 8 column button presses. Any thoughts?