It would be nice if the SDIO pins were defined for this variant like other variants. A pinout diagram is here. I think this is the correct definition. // SDIO #define PIN_SD_CLK (18u) #define ...

An open source and fully customizable keypad for osu. (based on the arduino pro micro and it's atmega32u4 chip.) - GRBL-F/OpenKeypad ...

The keypad module permits the door to be opened via entry of a PIN code. Available are keys 0 to 9, *, #, open, ring, light and delete. This, for example, allows a specific apartment in larger ...