3pcs 8x16 MAX7219 LED Dot Matrix Screen Module For Arduino Raspberry Pi B/ B+

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: 3 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