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Re:Klipper – open-source 3D Printer firmware by PragmaticPulp on Wednesday August 03, 2022 @07:22AM (#32330211)
3D printers are becoming extraordinarily inexpensive. When you can get a decent 3D printer for a couple hundred dollars, it’s more important than ever to have firmware with impressive functionality that can run in the cheapest of microcontrollers.
Re:Klipper – open-source 3D Printer firmware by dekhn on Wednesday August 03, 2022 @11:10AM (#32332802)
that's why FluidNC is so great: https://github.com/bdring/FluidNC Designed specifically for teh ESP32, it's a ground-up rewrite of grbl for ESP32. I've replaced all my various firmwares across devices (not my printers- those run prusa firmware) I build or use (microscopes, CNCs, various stages).

I still like the idea of a microcontroller doing the low-level work mostly controlled by a higher level microprocessor/SBC but it seems unnecessary?