klipper

There is _a lot_ wrong with Marlin. It is a complex codebase, full with ancient artefacts, litterred with preprocessor ifdefs every 2-3 lines of code, dynamic includes in the middle of CPP files, etc[1]. It's about as unreadable as C++ code gets--well, I guess it's not template metaprogramming. Klipper by contrast is a breeze to read through[2]. I am very grateful for Marlin, for all of reprap, and everyone who has contributed to it. But saying there is nothing wrong with it is straight up misguided. [1]: https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.1.x/M... [2]: https://github.com/Klipper3d/klipper/blob/master/src/lcd_hd4...

Pretty sure one could even get the 3D printer firmware running on OpenBSD. A popular choice these days is Klipper (https://github.com/Klipper3d/klipper) , which would most likely compile just fine.

1) You flash Klipper firmware to your 3D printer's microcontroller ("MCU" in Klipper docs). https://www.klipper3d.org/Installation.html#building-and-fla... 2) You run Klipper's server software ("Klippy host") on a Raspberry Pi (or other single-board computer). Klipper provides a JSON RPC API for communicating with your printer, without having to worry about serial baud rates or other low-level details. https://github.com/Klipper3d/klipper/blob/master/docs/API_Se... 3) You must connect Klipper server (Pi) to the microcontroller running Klipper firmware. I couldn't find a list of supported boards, but you can see all the usual suspects here (stm32, rp2040, etc). https://github.com/Klipper3d/klipper/tree/master/src Klipper also provides the ability to use your Raspberry Pi as a 2nd controller if your 3D printer's microcontroller doesn't h

I usually check the git for an example config: https://github.com/Klipper3d/klipper/tree/master/config I always look there when the "which printer should I get" question pops up in our extended friend group every few months. OTOH: Since most controllers are some common MCU + stepper drivers, it's possible to write custom configs as well (afaik the configs in the git are just some persons custom config for their printer, submitted via PR). But I definitely would prefer a printer with a "ready to use" config as well :)