Adafruit 8x8 LED Backpacks

Hi, I know it says MAX7219 in the description, but it looks from the picture on the Adafruit page like it's actually something else... I think HT16K33.

Adafruit's driver looks quite simple though, so you should be able to get up and running quite quick...

I2C1.setup({scl:B6, sda:B7});
I2C1.writeTo(0x70, 0x21); // turn on oscillator
I2C1.writeTo(0x70, 0x81); // disp on
I2C1.writeTo(0x70, 0xE0 | 15); // brightness 15

// not sure about this, you may need 16,8,1
var g = Graphics.createArrayBuffer(8,8,2); 
g.flip = function() {
  I2C1.writeTo(0x70, 0, g.buffer); 
};


g.drawLine(0,0,8,8);
g.flip();