What is the problem?
I am trying to connect to my 3DP with a BTT skr mini e3 v3 board, with Octoprint, on a rooted android phone.
I was following instructions to use the Octo4a for the custom CH34x driver which my phone is lacking. So i could run klipper from a ubuntu server running with LinuxDeploy on the phone. But i can't get either to work.
octo4a-2.1.0.apk server runs fine but it doesn't recognise any serial connection from the printer.
What did you already try to solve it?
- I have flashed the sd card following the boards instructions.
- I tried without sd card plugged in.
- I tried a couple of diferent custom and stock android 9+10 roms
- I tried multiple usb's that have worked with the laptop
- I have coverd/insulated the 5v power on the usb
- i have tried setting SELinux to permissive with an app on F-droid not sure if its actually working "getenforce" command not found.
From a linux deploy instance on the phone...
-
"ls -al /dev/" doesn't find printer's serial just returns ...
crw-rw-rw-. 1 root root 5, 0 Jan 13 1970 tty
lrwxrwxrwx. 1 root root 9 Oct 28 16:05 tty0 -> /dev/null -
lsusb returns nothing.
-
dmesg did return a line referring to octoprint
[ 555.584549] type=1400 audit(1730135355.868:295): avc: denied { ioctl } for pid=8195 comm="octoprint" path="socket:[64705]" dev="sockfs" ino=64705 ioctlcmd=8910 scontext=u:r:untrusted_app:s0:c98,c256,c512,c768 tcontext=u:r:untrusted_app:s0:c98,c256,c512,c768 tclass=unix_dgram_socket permissive=1
- "dmesg | grep usb" or "dmesg | grep acm" returns nothing
Have you tried running in safe mode?
no
Systeminfo Bundle
octoprint-systeminfo-20241028172806.zip (6.2 KB)
Additional information about your setup
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ender 3, skr mini e3 v3
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Xiaomi a2 lite, rooted, android 9
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The Printer has been operating successfully with a Ubuntu server laptop running Klipper via usb .
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confirmed baud rate is the same on both
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Y type Otg cable tested working for connecting to usb storage
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I've seen other here a having issues connecting to this board with Octoprint. Some with solutions found, but if i cant find the serial or even list the usb devices therefore i need help. Is this board know for having issues that cant be resolved?