I recently did an upgrade to my printer, I have my raspberry pi powered by a buck converter off the 12V header on my Rumba board, and i've replaced the USB link with a direct UART connection running at 1 Mega Baud. And yes i'm using octopi.
I'm doing this shortly with my new control board for my delta printer, I was wondering would people like me to put together a how to, on how to do this, you still need to use the USB to do firmware changes but only that, remember the USB serial link is limited to 250 kilo baud
I just want to know if people are interested in doing this rather useful upgrade, will take note, it reduces the RPi power consumption, as it does not need to use the power hungry USB port.
Talk Soon
Celcius1