Rat Rig Community [Unofficial]RRC[
Rat Rig Community [Unofficial]•12mo ago•
3 replies
karoo

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


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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