1. Using the LED dedicated constant current control chip, basically only occupy the Raspberry Pi SPI interface (3 IO + 2 enable) to control 64 LED lights
2. Support SPI interface B/B+ involved in Raspberry Pi
3. Driver chip: MAX 7219
4. Dot matrix type: 8x8 common negative red dot matrix
5. Size: 64.3x35x26.5mm
6. Package Included: 1 x MAX7219 LED Dot Matrix