8x16 MAX7219 LED Dot Matrix Screen Module Geekcreit for Arduino - products that work with official A

Features: ? 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 ? - Support SPI interface B/B+ involved in Raspberry Pi - Driver chip: MAX 7219 - Dot matrix type: 8x8 common negative red dot matrix - Size: 64.3x35x26.5mm ? Package Included: ? 1 x MAX7219 LED Dot Matrix

Pin number	Identification	Description
1? 17	3.3V	Input
2? 4	5V	Input
3? ?5??7??8? ?10??11 12? 13? 15 16? 18? 21? 22 26	NC	NC
6? ?9? 14? ?20? ?25	GND	Power
19	MOSI	data input
23	SCK	Clock signal
24	CE0	Chip select signal