D3, D4, D5, D13 are used by the LCD.
D6..D9 are keyboard rows.
A0..A3 are keyboard columns. I intentionally map these backward so the physical wiring would be pretty. :-)
WARNING: Note that the LCD is 3.3V!!!
D3, D4, D5, D13 are used by the LCD.
D6..D9 are keyboard rows.
A0..A3 are keyboard columns. I intentionally map these backward so the physical wiring would be pretty. :-)
WARNING: Note that the LCD is 3.3V!!!
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