Help Can't communicate to the MCU via serial port

General Discussion
1

Basic Information:

Printer Model: Custom Delta
MCU / Printerboard: Arduino Due
klippy.log
mcu ‘mcu’: Unable to open serial port: Could not configure port: (5, ‘Input/output error’)

Describe your issue:

Hello I am using Klipper with Moonracker and Fluid. I am using a Banana Pi connected to an Arduino Due.

When I connect the Banana Pi via USB to the Arduino Due everything works as intended but when I try to use the serial port instead, I got this error, and I can’t find what to do:

mcu ‘mcu’: Unable to open serial port: Could not configure port: (5, ‘Input/output error’)

mcu ‘mcu’: Unable to open serial port: Could not configure port: (5, ‘Input/output error’)

I have tried different serial port and to use different Banana Pi and Arduino Due

i already asked this question on reddit here : https://www.reddit.com/r/klippers/comments/ypqrrk/cant_communicate_to_the_mcu_via_serial_port/

Thank you for your help !

2

did yo find a solution. having a similar issue

3

You’re going to need to start your own thread and post all the required information in the form, including your klippy.log.

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