ever thought about adding an altimeter to your list of sensors?
This would be a good addition especially with auto-altitude functionality.
BR2 seems to be a good platform for small work projects. Some of these project include water tank inspections. Since the clients may be filling during inspections, depth measurements gets a bit tedious for referencing anomaly elevations.
I do appreciate the advice. I understand that solution may be “simple” to most, but it’s sadly beyond my abilities at the moment. Plus it seems like extra hardware and coding that ought to be unnecessary. The device outputs perfectly good RS422… in my noob mind, ideally I should be able to connect that directly to an appropriate interface on the Pixhawk or Raspberry and have that translated into a usable altitude parameter. I’m hoping this will be implemented someday.
I have just ordered a DT800 and would love to implement the NMEA 0183 depth sentences really soon. No idea what it would take to include but I’ll be receiving the unit next week and doing some field testing over the next couple weeks. My main field work isn’t until April so not 100% needed by then but it would save me from having to come up with a work around. Thanks!
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!
I had connected it to a custom pcb with a microcontroller with code to read the altimeter, and send the data to the ROV via MAVLink.
There is no support for this at the moment, but I may be able to add something quickly. The driver will depend on the options you ordered the micron with. Please provide me with those details, and the documentation in case I can’t find mine.