Printer Model:Ender 3 v2
MCU / Printerboard:Skr mini e3 V3
Host / SBC Raspberry pi zero 2w
klippy.log
Hi there. I’m having a problem: whenever I re-flash the firmware on my Raspberry Pi Zero 2W, everything works fine—until I shut it down or unplug it. After that, it simply won’t connect to Wi-Fi or do anything else; I’m completely stuck. If I re-flash the firmware and run all the updates, I can print just fine—but only until I turn it off again. What’s going on?
I’m powering it via a 5.2V 3A step-down converter, with the board connected to a USB hub alongside the Eddy Duo. I’ve had issues with the ADXL before, but I managed to run the test somehow.
You really haven’t given us much to go on but the above makes me think that your primary issue is at the OS level. Klipper USES network connections, Linux manages network connections.
Which image are you flashing onto the SD card? How are you inserting your WiFi credentials?
Have you tried wired ehternet? Do you know how to SSH over USB (serial)?
The best advice I have is try and find a support channel for the source image you are using.
Next try a different “distro”. If problem persists you will have to establish a SSH session over wired ethernet or USB.
Which image are you flashing onto the SD card? Other specific-purpose OS–>3D printing–> Mainsail OS
How are you inserting your WiFi credentials?When using Raspberry Pi Imager, I perform the entire configuration; it asks for Wi-Fi details, so I enter the network name and password.
Have you tried wired ehternet? No, because the Raspberry Pi Zero 2 W doesn’t have an RJ45 port.
Do you know how to SSH over USB (serial)?No
I used the BLTouch and MicroProbe v2 before, and I didn’t have problems like this.
It is very unlikely any issue with the Eddy or it’s configuration could interfere with the OS initializing the network stack. The only thing I can think of is a USB device could cause a kernel panic early in the boot process. Will the system boot with the Eddy unplugged? Klipper will error but WiFi should connect and you’ll be able to see the errors in Mainsail.
Lots of tutorials on SSH over USB, pick one and get it working before you reboot the Pi the first time.
Exactly—even when I disconnected the Eddy Duo, it wouldn’t boot up again. The only fix is reflashing the firmware; everything works fine until I click “shutdown.”
Maybe i should try connect motherboard as UART and i will have 1 slot for eddy
