Geeetech a10 klipper install help

General Discussion
1

Basic Information:

Printer Model: geeetech a10
MCU / Printer-board: gt2560
Host / SBC: orangepi zero 2w

hi all, i’m receiving the error

“ mcu ‘mcu’: Unable to connect Once the underlying issue is corrected, use the

"FIRMWARE

RESTART" command to

reset the firmware, reload the config, and restart the host software.

Error configuring printer”

i’ve gone back through the steps, i’ve tried flashing the printer through the orange pi and it says flash successful, i’ve tried flashing it via sd card, but i’m at a loss, ive attached my log file, does anyone have any insight into what to try next? i’m pulling my hair out
klippy 2.log (48.0 KB)

2 
mcu 'mcu': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0'

from the log?
sometimes the interface name changes after klipper was flashed to the board?

3

okay so i tried to find the serial port to use by when i do ls /dev/serial/by-id/* it just says “file not found” so i try to find it manually searching all the sub files but there’s nothing? i’m guessing that it was removed when i flashed the mcu

4

the ertries here are softlinks to the serial interfaces and if they are missing usually the interfaces are also not available ( example)

pi@octopi:~ $ ls -la /dev/serial/by-id/
total 0
drwxr-xr-x 2 root root 80 Jul 12 20:46 .
drwxr-xr-x 4 root root 80 Jul 12 20:46 ..
lrwxrwxrwx 1 root root 13 Jul 12 20:46 usb-1a86_USB2.0-Serial-if00-port0 -> ../../ttyUSB0
lrwxrwxrwx 1 root root 13 Jul 12 20:46 usb-Klipper_lpc1769_13A00017C2846AAF179D4D5EC52000F5-if00 -> ../../ttyACM0
pi@octopi:~ $

this is usually caused by:

  • the board was not flashed correctly
  • troubke with the USB cable
  • trouble while printerboard and pi are powerd with seperated power supplies

Youl will find many posts here from peopke with the same issue.

5

That should not matter as long thy have a common ground (eg via the USB cable)

6

I also not faced this issue myself, but there are pretty many posts over the years which were suggested, to isolate or cut th USBs 5V connector.

7

Sure, that make it different: The well known back-powering issue.