I'm trying to get Octoprint (or anything at this point) to connect to my SKR2 running Marlin on a new machine. The only difference between this setup and previous ones is, I've got a BTT MINI12864 V2 using the EXP1 and EXP2 ports on the SKR2, vs the CR10 display that only used one of them.

I've tried different USB cables, a couple of different SKR2 boards (running the same firmware), a couple of raspberry pies and my PC. They always sense when I plug the SKR2 in, but can't make the actual communications connection. I've attached my config files here and would greatly appreciate any advice here. Thank you.

Configuration.h
Configuration_adv.h

The only serial port you have enabled is the TFT connector (ie #define SERIAL_PORT 1)


This board has 3 serial ports

-1 this is the USB cable
1 this is the TFT port
3 this is the WIFI port


remove the // from

//#define SERIAL_PORT_2 -1

to enable the USB port

Or of your not actually using the tft port change #define SERIAL_PORT 1 to #define SERIAL_PORT -1

Edited 1 time(s). Last edit at 06/23/2024 03:24AM by Dust.

THANK YOU! This got me connected. I went back and looked at the firmware for my other machine and it does indeed have SERIAL_PORT_2 -1 enabled. I was too focused on the first port and I've been fighting too many other things on this machine, afraid my brains turned to mush.