[mdm]

This technique is working pretty well for me! Next step is to connect to a Pi. While I plan to measure voltage first, can you tell us off the top of your head whether the serial pins are 3.3V or 5V?

[mdm]

SOLVED

I had neglected to redefine the latch value as is advised.

This change is needed in the code:
#define LAT 10

[mdm]

Hi Michael.

I bought the backpack from you. I am running the Adafruit software
// testshapes demo for Adafruit RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.`

Downloaded latest from github.

Oh, and I don’t know if the panel worked with the code shipped on it. I hooked it up wrong to my first panel and uploaded the new code thinking that was the problem. It was not…

• This reply was modified 8 years ago by mdm.

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