Review on 🎄 Onyehn 2pcs/Lots MAX7219 Dot Matrix Module (Red Light) 4 in 1 Display: Christmas Decoration DIY Letters Electronic Display for Arduino Microcontroller with 5Pin Line by Lamont Wilson

This MAX7219 is RED, BRIGHT, great display and easy to use! If you are using the latest MD_MAX7219 {GitHub MajicDesigns/MD_MAX72XX} you may find that your display looks weird (see my picture)! Try adding this to your Arduino sketch: #define HARDWARE_TYPE MD_MAX72XX::ICSTATION_HW comment or remove any other of the above #defines ie. //#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW// Any output pins CS_PIN, MAX_DEVICES); Marco Colli made big changes to his code so many of the code samples you find online won't work, right! You no longer need to edit the MD_MAX72xx.h file (you can't anyway, completely redesigned). Many YouTube videos indicate that editing this file is no longer possible with the latest update available on GitHub. Hope that helps!