I just got an NeutronRC AT32F435 mini AIO board and it looks like there is an iNav target for it named NEUTRONRCF435MINI.  I would like to try to using this board for a quadcopter but it doesn't seem to have a SCL or SDA pin for the compass.  I've never used iNav on a quadcopter before so I was wondering if there was a way to use it without a compass?  If not is there some other way I can attach a compass to this board?

(08-Sep-2023, 12:59 AM)necbot Wrote: I just got an NeutronRC AT32F435 mini AIO board and it looks like there is an iNav target for it named NEUTRONRCF435MINI.  I would like to try to using this board for a quadcopter but it doesn't seem to have a SCL or SDA pin for the compass.  I've never used iNav on a quadcopter before so I was wondering if there was a way to use it without a compass?  If not is there some other way I can attach a compass to this board?

The board has two small round pads labeled S and D. Those are the scl and sdl lines.
Inav can be used without compass, but the RTH and other autonomous flight modes will not work as intended.

(08-Sep-2023, 04:59 PM)PeladoMat Wrote: The board has two small round pads labeled S and D. Those are the scl and sdl lines.
Inav can be used without compass, but the RTH and other autonomous flight modes will not work as intended.

I think I see them very close to the AT32F435CGU7 chip (circled in red).  The label looks like C and D.  Did you mean to type S and D or do I have the wrong pads?

It's right next to the barometer which uses the same interface. I'd bet money that those are your pads.

I got good news and bad news. The good news is that the C and D pins that are circled above are the magnetometer SDA and SCL pins. I flashed iNav 6.1.1 and the magnetometer is working perfectly. The bad news is that the GPS does not work on this board when it's running iNav. I confirmed that I had the GPS wired properly by flashing ATBetaflight (betaflight for arterytek) and the GPS and magnetometer worked fine on ATBetaflight. I flashed back to iNav again and played around with the baud settings but nothing worked.

What GPS are you using with it?

The GPS is a Matek M8Q-5883. The GPS worked fine on Betaflight using UBLOX as the protocol. Nothing seems to work on iNav though

I've had some strange behaviour with some boards - and the same GPS configs with iNat lately. One of the things I noted is that the Sbee F7 stack wanted me to use NMEA for the GPS, while F4 stack and F4 Wing both accepted UBLOX - which I thought was weird since it was the same GPS module in each of them. Though also I was only using a 5 wire interface to the GPS on the F7 Stack if that makes a difference. Anyway, it still worked OK when I set it to NMEA aside from telling me it was deprecated, and the GPS functions worked correctly when I got it set up.

(12-Sep-2023, 02:50 AM)necbot Wrote: I got good news and bad news. The good news is that the C and D pins that are circled above are the magnetometer SDA and SCL pins. I flashed iNav 6.1.1 and the magnetometer is working perfectly. The bad news is that the GPS does not work on this board when it's running iNav. I confirmed that I had the GPS wired properly by flashing ATBetaflight (betaflight for arterytek) and the GPS and magnetometer worked fine on ATBetaflight. I flashed back to iNav again and played around with the baud settings but nothing worked.

i am facing similar issue with neutronrc at32f435 aio.
mag working good but gps not working in any ways. have tried connecting it to each and every uarts but didnt worked for me. moreover inav7 removed nmea gps protocol.
were u able to rectify this issue?