EDIT: Was a bad board. Swapped in a new rPi4 and it works.
What is the problem?
I can connect no problem via USB, however I want to connect my Raspberry Pi 4 2GB to my Prusa MK3S via the serial port on the GPIO (similar to their Pi Zero W install).
I believe the issue is with a Pi3 you are supposed to edit the /boot/config.txt file and add
dtoverlay=pi3-miniuart-bt to the end.
That may no longer be supported by the Pi4. Anyone know what the updated code would be?
(see Step 10).
What did you already try to solve it?
Followed the instructions here
Tried using Auto for Serial and Baud rate.
Also followed the article on increasing timeouts, etc (can't find article right now).
serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support!)
Pi4SerialAutoLogs.zip (891 Bytes)
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible)
Recently updated everything.
Raspberry Pi 4 2GB (latest FW, connected to 5V buck converter for power, large heat sink and fans)
Prusa i3 MK3S