I made a new board with MAX7219 and a led matrix. Same result. It works with my modified code (as shown above).
Here is the image of the wiring.
A bit messy with long wires - so that the wiring is more easy to follow.
I made a new board with MAX7219 and a led matrix. Same result. It works with my modified code (as shown above).
Here is the image of the wiring.
A bit messy with long wires - so that the wiring is more easy to follow.
