Hardware Reference
In-Depth Information
Discussion
This setup assumes that the LED matrix can be driven from 3.3 V. See
Recipe 3.6
to drive a
5 V display.
You don't need to write the entire LED matrix with each write. For example,
b.i2cWriteBytes(port, 0x04, [0xff]);
would turn on the third columns of
green
LEDs, without writing the other columns.
