Everything goes pretty well, i am able to get a float/fix connecting base and rover over internet with 4G.
I setup MP as shown in the docs with all parameters set correctly (it is beyond me understanding why Navio manufacturer uses Pixhawk in the documentation of their products…)
I added status of the 2nd gps in the hud but i never get any 3,4,5…always zero (rover is indicating a fix in the meantime).
Now, since i checked 1000 times all the parameters and all look good, there is only one left that is not mentioned in the docs, SERIAL4_PROTOCOL i have it set to 5 (GPS), is this correct or i have to set it to 6?
Maybe i didn’t understand fully and i need to start Ardupilot with some switch to have it working???
From memory the first GPS is the navio2 GPS unit and the reach is the second? I think its something to do with the the ERB protocol. Last I used the reach I never got any satellite info in MP and always verified the results with rtkplot, or the fact my rover wasn’t jumping all over the place
I even tried to attach the external 3DR gps while i was testing the external magnetometer and i don’t get any info from that either, no lat no long and no status.
Maybe it has something to do with the way i start Arducopter with option -A???
yes that is the correct way to start APM with a secondary GPS; APM automatically uses to the more precise GPS if you set gps autoswitch to 1;
so i guess - SOLVED
make sure to use GPS and GLONASS 5hz;
but if you have 8 good sats with reach plus corrections, then you will have precise position data - rtk gps cares not so much about the number of satellites - more about “good signals”; so add a ground plane (10x10cm), place antenna in the center, make a hole for the cable and observe!
I am a surveyor building a UAV to help with our Topo’s and large area surveys. I have the reach kit (base and rover) and have achieved great RTK results (1-2 CM after fix).
I plan on using a Sony NEX 5N camera and a remote trigger based on distance from last image.
For radios I’m using
915 MHz 3DR for RTK to connect UAV as Rover to Base,
2.4GHz for controlling the UAV
5.8GHz for Video/Camera
Questions,
If I build my UAV with with Navio2, Do I use the onboard GPS for Navigation or should/can I use Reach connected to the Base? if so how?