Josef said "aux port has SPI" routed to it. What header is that on Einsy? Would theoretically allow much faster SD card writes
Here's the Tweet: https://twitter.com/josefprusa/status/915315958545289222
I'd like to look into this more, but I can't find any wiring diagrams for Einsy that show what/where this 'aux' port is.
I'd like to hook it up to the SPI headers on another board and start experimenting.