Tiled Neomatrix on different pins - only first defined works

Projects Programming
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Thanks, gfvalvo and everyone else! At least I'm not crazy...

I couldn't get that exact line to work (probably mostly because I don't know where to define matrix1 or matrix2 in that), and presumably numLEDs is defined in a different line. The Adafruit_NeoPixel.h docs don't mention where they got numLEDs from....but I ended up doing this and get 0 for both matrix1 and matrix2:

uint16_t numLEDs = matrix1.numPixels();

void setup() {

  // Start the serial interface
  Serial.begin(57600);

  Serial.print(numLEDs);

Getting the same value for both is suspicious, so probably my workaround isn't valid. Any thoughts on what I'm doing wrong?

Thanks!