Creality Sonic Pad & MK3s - fixed Not a valid ADC pin error msg.

[77erup]

Hello, thanks to dz0ny I was able to compile correct printer.cfg for my #PRUSAMK3s+ and Creality Sonic Pad. However I tripped a few times on the way to my goal:

Following solution is valid for ATMEG2560 chip

Incorrect ADC pin error (MCU 'mcu' shutdown: Not a valid ADC pin) - please see "extruder.block.printer.cfg.txt for correct version with comment.

Also providing my version of printer.cfg for your use if needed. Please do not forget to doublecheck my work. Just a newbie.
This schematics was used for doublechecking the ADC pins: Here:

extruder-block.printer.cfg.txt
printer.cfg.txt