It is recommended that you have followed the previous instructable before you do this one.
Step 1: Components
- Arduino Uno board
- 4 MAX7219 Red Dot Matrix Module
- 17 jumper wires M/M (male/male)
- 3 jumper wires F/M (female/male)
Although this instructable uses an Arduino Uno board, you can use other Arduino (compatible) boards
IMPORTANT: The LED matrix is common cathode. This module does not work with common anode matrices.