Tim said that it should fit in a 2" enclosure with a little bit of sanding. My DT800 arrives tomorrow evening and I have a spare 2" enclosure so I’m hoping that works. If not, I’ll get a 3" enclosure and cut it down. My plan is to mount it inside the enclosure and then mount the wet side inside a water filled enclosure so that I can prevent pressure. I’ll do some testing to see how the plexiglass in front of the actual sensor impacts the readings. Unfortunately, I probably won’t get it hooked up and tested right away unless it fits in the 2" enclosure. I’ll post back when I have some progress.
Some quick research last night looks like connecting it to the Pi via USB shouldn’t be too hard (adapter also arrives tomorrow). There are some python libraries that will read the NMEA sentences so I’ll probably incorporate that into my existing software and then incorporate it into the ROV somehow. Lots of software development to do in the next 48 hours!