Detail Module Led Dot Matrix 8x8 Display with Max7219 for Arduino
Description: 1 single module can drive an 8 * 8 dot matrix common cathode 2 module Operating voltage: 5V 3 Module dimensions: length 3.2 cm X 3.2 cm wide X 1.3 cm high 4 holes with four screws, diameter 3mm 5 modules with input and output interfaces, support for cascading multiple modules