Arduino Mega2560: which port (+index) represents which pin?

[stllvdv]

Hello @paradajz et al.,

I started building things around the Raspberry Pi Pico, but want to finish something with the Arduino Mega2560 as I can't return it. I want to add multiplexers, but I'm a bit confused by the port-naming scheme. The pinouts help tremendously, but how would I know within the YML-file which pin e.g. port: "B" index: 1 is referring to?

I apologize if this is yet another question with a ridiculously simple answer.

Thank you!

EDIT: Currently struggling with which ports and indexes I want to define for s0, s1, s2, s3

[paradajz]

Here's a PDF from Arduino website:

https://content.arduino.cc/assets/Pinout-Mega2560rev3_latest.pdf

[stllvdv]

Thanks!