How to use an LED matrix with a Raspberry Pi 

Hi. Thanks for sharing. I wonder if the spi bus in the max 7219 is 3.3 or 5 volts. May it be a dub questionnto ask

Hi, I am able to set this 4 x LED Max7219 Modules and I able to cascade 4 more LED Max7219 making it to have 8 x LED Max7219 which makes 8 x 64 dots. The demo script also work great. Now I like to add 2 more modules of LED Max7219 and make it like 16 x 64 dots. While I am able to daisy chain all of them I am not able to bring the text in the below two modules. Any ideas?👏👏 👍