Hi all,
I put together this expansion board for the Bambu X1 Carbon and enough people asked me to sell it that I've put it up on Crowd Supply:
https://www.crowdsupply.com/accelerated-tech/x1plus-expanderIt's open source hardware (designed in KiCad,
https://github.com/jwise/x1-expander), and adds an Ethernet port, two USB ports, and four GPIO ports connected to an RP2040. It uses a LAN9514 as a combo USB hub / ethernet MAC to do the non-GPIO part of the work. A few of us also put together some addon modules (levelshifter for WS2812B LEDs; a board with a handful of WS2812B-compatibles soldered down and a beeper and some buttons; solid state relays for a shutter release) that I think are quite cool.
If you're part of the YouTube generation I did a video for it, which took me like a billion hours of filming and editing... never ask a sparky to do video editing, it just takes forever... but here it is:
and here's a video of a timelapse I shot with it:
Hope this is useful to some of you... if I can answer questions let me know...
joshua