HT16K33 16x8 Dot Matrix Driver Board

The HT16K33 is a neat little chip capable of driving a multiplexed 16x8 matrix (that's 128 individual LEDs). The communication protocol is I2C so it only uses 2 pins and you can have up to 8 selectable I2C addresses so there are 8 matrices in total, each controlling 16x8 LEDs for a total of 1024 LEDs. The chip also supports reading 3x13 keypad matrix