Extruder not working (ender 3 s1 pro)

General Discussion
1

Flashed the latest klipper onto a STM32F4 based Ender 3 S1 Pro.

Stock firmware extruder works.
Klipper firmware (tested using mainsail and octoprint) does not activate the extruder.

I can heat the nozzle, home, xyz, etc, but when I say extrude, it does not work.
If I give a full GCODE, it will run around and do it’s thing, but not extrude.

Flashing back to stock firmware, the extruder works.

Using the Ender 3 S1 printer config from Github. Pretty vanilla setup and stock elements, so I’m confused why the extruder does not want to work. Unless maybe there’s a different between Ender 3 S1 and S1 Pro?

Thoughts?

2

Hello @mennov !

Please share the klippy.log in your next post as a (zipped) file.

3

I’ll grab it, but I don’t think it’s the root cause.

Just tried stock firmware, and if the USB-C is plugged in, the extruded won’t work. I need to unplug it and power cycle the printer. It’ll work then. Seems to be an issue with that?!?

4

Make sure to have set serial on USART1 PA10/PA9 during make menuconfig

5

Yup. Did that.

However, I noticed even octoprint with stock firmware has the issue with the USB-C plugged in. Don’t think this is klipper specific.

6

Backpowering issues?

Bit difficult on USB-C

7

Nope. Literary a disconnected USB-C cable will already do it.

8

You could try to use a direct serial connection between RPi and the board. Maybe some defect in the USB port. Need to recompile the firmware for this. See the respective cfg on Klipper GH

9

I’ll take a look. I’ll have to see if there’s a pinout on the board for a rxtx connection.