uhubctl VS kiauh

In my experience this support was rare. I had an issue a few years ago with multiple USB 3 cameras (Intel Realsense) on a mobile robot that would periodically freeze up and need to be hard-reset, and a power-controllable hub seemed like the least-bad way to hack around it. I found my way to this tool, with its convenient list of compatible hardware:

https://github.com/mvp/uhubctl

Of the USB 3 options on the list, several were EOL or impossible to find, and when I ordered one each of the remainder, there was only one I could get working, and it wasn't reliable about being able to reset a device that had frozen to the point where Linux no longer had sysfs entries for it.

We ended up instead using a hub with an internal jumper to disable bus power, and then putting the self power line through a separately-controllable relay.

Best you can tweak is to disable the WiFi / Bluetooth and possibly the USB ports (edit - USB look no go https://github.com/mvp/uhubctl)

There's an extremely useful feature called USB Per-Port Power Switching, that's somewhat rare because nobody knows about it. If you use a Unix-family operating system, then here's a C driver. Windows doesn't currently have this feature, but could add it in the future -- let's hope they do!

https://github.com/codazoda/hub-ctrl.c or https://github.com/mvp/uhubctl can be used if the hubs have "Per-port power switching". The second link also has a long description.

If you were using a USB-powered drive and Linux/Mac/Unix, you could use uhubctl with one of the (uncommon) hubs that support Per-Port Power Switching (PPPS).

Actually some of the Pi boards USB ports can be controlled by Uhubctl but you have to note the restrictions on the board you are using - mainly how many you effect and the "minor" fact of the USB also controls the Ethernet and WiFi power on some boards!

Agreed this is not the right sub for this, but you got me curious. Without diving too deep, check out https://github.com/mvp/uhubctl

I've also used Qlab on both ends to trigger USB led flashes via OSC using uhubctl. You'll need a usb hub for that.

I just installed Ubuntu server and then used KIAUH to install Klipper. I was up and running in less than 20 minutes.

You can install Ubuntu on any spare laptop/desktop you might have and install Klipper using kiauh. https://github.com/dw-0/kiauh

There are several options for other firmware, the popular ones being Marlin, MRISCOC (“professional firmware” as you see it called around here), and Klipper. Klipper is the gold standard and I highly recommend it. People talk about how difficult it is to install, but it literally takes 15 minutes with KIAUH (an installation script that makes it dummy proof). There are tons of written and video goods online.

2: Download Kiauh

Second download the gcode_shell_command.py the script is currently maintained here, I'm including the Author's warning

Give it a try. It makes things so much easier. Follow the instructions on https://github.com/th33xitus/kiauh from the section "Download and use KIAUH". Then start it by: "cd ~/KIAUH & ./KIAUH.sh" There choose install and you should see an option to install crowsnest. If that doesn't work, try either deleting the existing crowsnest directory, or uninstalling it using KIAUH. Whatever works. Then try to install crowsnest again. Let me know if that solves your problem 😊

Use Kiauh to install Klipper, with it you will be able to install Octoprint as well. It's the easiest way to have all set up correctly.

If you don't remember what you did just start over rather than dissecting what your raspi currently runs. Thanks to kiauh installing the whole deal takes like an hour, where 45 min is waiting for the thing to think. One cam should work out of the box, for two or more you need crowsnest iirc, which you can also install through kiauh.