mainsail

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

OctoPrint is great. I use it with a modified Ender 3 Pro and Cura + Cura's OctoPrint plugin. Having said that, I have been very curious about https://github.com/meteyou/mainsail. I can't quite tell if it'll work with Cura so I can just hit "print" from the slicer and have it go, but the UI is quite slick and free of a lot of random notifications, etc. that come with OctoPrint.

It seems I'm the minority here, but I dont like OctoPrint. My main issues: - Terribly slow startup and load times. - no support for mobile devices just with some app. - While it can do lots of things with plugins they tend to kill performance which might cause artifacts on the print. - slow on updates, they ware on Python 2.x until this year. I'm currently migrating to mainsail (https://github.com/meteyou/mainsail), which looks much better.