I have tried coordinating with them in the past, but could never get a clear set of specs for their Fuji controllers. I will probably broach that in the near future. Now that I've written a custom Bluetooth LE engine for Roastmaster, cases like this would be pretty trivial to write software that could run a small, cheap SBC (Raspberry Pi, etc.) and broadcast USB readings via Bluetooth.
Hopefully in the future.
