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karoo

•Created by karoo on 2/6/2025 in #fix-my-printer

Octopus V1.1 won't connect via USB

I'm just building my first Rat Rig (a Vcore 4). My problem is: the board just won't show up as a USB device (it's still outside of the printer, without drivers and without anything connected to it). dmesg output always is like:

usb 1-1.3: new full-speed USB device number 15 using xhci_hcd
usb 1-1.3: device descriptor read/64, error -32
usb 1-1.3: device descriptor read/64, error -32
usb 1-1.3: new full-speed USB device number 16 using xhci_hcd
usb 1-1.3: device descriptor read/64, error -32
usb 1-1.3: device descriptor read/64, error -32
usb 1-1-port3: attempt power cycle
usb 1-1.3: new full-speed USB device number 17 using xhci_hcd
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: device not accepting address 17, error -71
usb 1-1.3: new full-speed USB device number 18 using xhci_hcd
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: device not accepting address 18, error -71
usb 1-1-port3: unable to enumerate USB device

usb 1-1.3: new full-speed USB device number 15 using xhci_hcd
usb 1-1.3: device descriptor read/64, error -32
usb 1-1.3: device descriptor read/64, error -32
usb 1-1.3: new full-speed USB device number 16 using xhci_hcd
usb 1-1.3: device descriptor read/64, error -32
usb 1-1.3: device descriptor read/64, error -32
usb 1-1-port3: attempt power cycle
usb 1-1.3: new full-speed USB device number 17 using xhci_hcd
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: device not accepting address 17, error -71
usb 1-1.3: new full-speed USB device number 18 using xhci_hcd
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: Device not responding to setup address.
usb 1-1.3: device not accepting address 18, error -71
usb 1-1-port3: unable to enumerate USB device

So far I have tried: - Different USB cables (long, short, USB 2, USB 3) - Different USB ports on the Pi - Connecting it to my notebook - Powering it via USB or via 24V (lab power supply) - Pressing the reset button on the Octopus for a long time or twice or more in quick succession - Entering DFU mode via BOOT0 jumper and also in addition with BOOT1 tied to GND - Flashing via SD card: the LED blinks and it renames the file from firmware.bin to FIRMWARE.CUR - Flashing via debugger (ST-Link / Black Magic Probe). The MCU is detected correctly, erasing and flashing seem to work fine as well - Reinstalled the BTT bootloader, then flashed Klipper again Do you have any advice? Something I maybe have overlooked, tips that I might have missed? In my desperation, I have already ordered a new board, hopefully arriving tomorrow. But I'd like it much better, if I could get the one that was part of the printer kit to work

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