I had seen those a few weeks ago and was thinking the same thing, however I was under the impression they were using an existing stepper-driver IC instead of a Dual H-bridge driver.
Perhaps I was looking at one of the similar projects out there that do similar lol. I was considering using one of those closed stepper designs to derive a board specifically for simpleFOC use, but after looking at the BOM it seems to use a A4954 driver. That means it should work since it’s just a dual H-bridge and nothing else. Problem solved
From a quick look at the schematic, it appears the magnetic sensor is connected via SPI. I imagine support for it’s communication protocol would need to be added to the codebase to make use of that.
in short, it should be SimpleFOC-able but until support for the magnetic sensor is added, it would be openloop only