Hi Earendil, I know this has been inactive for a few years but was interested in seeing if and how the hack is going? I could see many great uses for a Raspberry Pi / Arduino retrofit to the old system (considering the cost of replacing with 80s oem). There are plenty of people that would love to modernize their e30s, e28s, e24s etc. and could do so with a clean custom look. If you could yoby freedomheel - Technical Forum