Pin names are not Arduino pin numbers, rather actual AVR pin names (i.e. B,5 is PB5 pin). You may need to lookup in the board pinout/schematics. Also timer outputs are actual OCnX lines, i.e. 2,B is ...

[Kaushlesh Chandel] prototyped a few projects on his Arduino that use an HD44780 Character LCD. Wanting to keep these projects in one piece, but not sacrifice his Arduino board, so he etched his ow… ...

LCD Pin Description: Pin Name Pin Number Description VSS 1 Ground (GND) VDD 2 Power supply (5V) VO 3 ... D6, and D7 of the LCD to four digital pins on the Arduino (e.g., D9, D10, D11, D12). Leave ...