I have been working on a robot mower and tried the LC29 RTK GPS with results that were just kinda OK. Wondering to upgrade to CUAV C-RTK2 HP. Specs are awesome. .2 degrees yaw accuracy, quick capture of GPS data. Two antennas, one GPS chip, Comes with RM3100 compass and both helical antennas. Price is far better than dual F9P’s. Apparently supported by ardupilot and bench tested by Yuri, but few if any field reports about the unit on actual rovers. Does anyone have experience with this unit? Not sure what chip it uses: doesn’t seem to be the Ublox or UM982. Support? The product is pretty new: 8/23. Thought I’d open a new thread to gather some information. I’m still pretty new to this so if there are other threads I missed or this should be moved, let me know.
Mine arrived a few days back. I plugged it into my windows laptop via usb. New device turned up. What now ? It was recognised as ch340 (or whatever arduino/esp32 uses) i was thinking my pc got confused - i was expecting a GPS and maybe a COMx port.
Nice unit - smaller than i was expecting, in a good way.
Not sure. I think you need some software to read it. I received one and put it in my rover and it seems pretty good. I replaced an LC29 that never seemed to work very well. Capture of satellites and NTRIP was very very fast. Heading changed properly when the rover turned. Occasionally I got gpsyaw of 665, but would quickly flick back to proper 350 or whatever. The LC29 used to keep gpsyaw at 665 all the time.
The C-RTK2 HP works fine. I run it on a rover, and I recently saw a few logs from a couple of copters where I could make a comparison to the F9P (though not an ideal apples to apples comparison). The Zed-F9P outperforms it, but not by much so far as I’ve seen. CUAV uses a UM982 for this module.
No need to connect it to USB. Follow the docs and connect it via CAN to an autopilot. It also supports connection via UART, but CAN will likely produce better results.
https://ardupilot.org/rover/docs/common-cuav-c-rtk2-hp.html
Incidentally, you would need two of the LC29HEA modules correctly configured for moving baseline to get heading out of them. I don’t recommend trying that.