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The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328P microcontroller.

2 votes

max7219 chained display showing mirrored text

Check the configuration in MD_MAX72xx.h file and ensure you have the right module selected. For example there is a define #define USE_PAROLA_HW 0 if your hardware is this item then turn off the …
Paul Cavanagh's user avatar