getting nmea0183 from a NASAMarine Duet

[yiannis]

Opening up this thread again with an update.

I connected the NASA Marine Clipper Duet [https://www.nasamarine.com/product/clipper-duet-system/] with an Atmega 32u4 that I had uploaded the code from here [https://github.com/pljakobs/NASAMarineDuetDriver/]. I used the ASCII art diagram that is the code (see below):
   

So I connected just 3 wires: the speed to RX, gate to SCL and echo to SDA. Unfortunately, I was getting erroneous data. It would show in SignalK sometimes a depth of 201,828.31 metres and sometimes 0. The speed was showing a 1.3-1.4 knots. The Nasa display was showing 0 knots and 4.9meters of depth.

So, now I am thinking of trying the NMEA2000 solution with the ESP32 [https://github.com/speters/ClipperDuet2N2k]. Has anybody tried it? Can anybody confirm that it works? From what I understand it should output the data in NMEA2000 format to the serial (USB) port, so in theory, I could connect it straight to the RapberryPi and avoid all the different boards and connection and conversions to CAN and back to SignalK and avoid some points of failure.

Any ideas/experience/opnions?

TIA,
Yiannis