In SAMD Arduino it is possible to map an arduino pin number to a specific pin on a per-board basis? Is the same possible with the ESP32 arduino version? I only see extra variables like D1 = 7; in ...
If you want to build a button array, follow this diagram. The main idea here is to connect each button to a diode in a row by column fashion, and read all the rows column by column. Rows works as ...