(2022-01-21, 09:44 AM)deanfourie Wrote: Well I dont think im getting any HDT messages. I think its a UBLOX chipset cant tell you exactly what model yet, but it has six wires, 2 are power, 2 are TX/RX (GPS) and 2 are SDA/SDL (Compass). I cant get the heading working at all in OCPN. So, am I going down the right track in thinking this should be a compass connected via I2C or should I be looking more at getting HDT messages from the GPS itself?
Thanks for your reply.
Heading is unlikely to come from the GPS, it will give you course over ground but not which way the boat is pointing. Getting I2C messages into signalk might be a bit more involved, sorry can't help with that. Does it show up in the i2c openplotter app?
https://openplotter.readthedocs.io/en/2....c_app.html