Question about various firmwares...

hey

I just can speak for my firmware (neorainbowduino), answers are below:

  1. scrolling text (marquee) function → see nr3)
  2. print word (as opposed to single character) function → see nr3)
  3. whole frame bitmap upload via I2C (as opposed to a row mask) → yes
  4. support for multiple rainbowduinos/matrices for all of the above? → yes

you can use a simple processing sketch (or eclipse if you want) to send data to the rainbowduinos.