3D Printer shenanigans (Prusa MK3S)
I've done it! Mwahaha! I mounted a Raspberry Pi4 to my Prusa via the Einsy Rambo J19 header.
No more stalls/dwells due to USB/RS232 bottlenecking!
Full writeup on Reddit, but basically the wiring is as such:
Pi GPIO bank -> Rambo J19
pin 8 (GPIO 14, UART TX) -> pin 6 (GPIO 19, RX1)
pin 10 (GPIO 15, UART RX) -> pin 8 (GPIO 18, TX1)
pin 9 (ground) -> pin 4 (ground)
The wires are twisted to reduce EMI.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko