ardupilot VS betaflight

They are widely used in narrow circles :)

Two of (arguably the best) open source RC aircraft flight controllers (ArduPilot and PX4) are using extended Kalman filters in their state estimators (essentially sensor fusion that provides attitude/position estimate):

https://github.com/ArduPilot/ardupilot/tree/master/libraries...

https://github.com/PX4/PX4-Autopilot/blob/main/src/modules/e...

I'm not that familiar with cleanflight/betaflight/inav scene to know what the FPV racer flight controllers use.

2. https://ardupilot.org/

Trimble also has some nice stuff, I think the BD940 is interesting. I do not know if it's recommended or not, but Ardupilot has a driver for the Septentrio GPS (https://github.com/ArduPilot/ardupilot/blob/master/libraries/AP_GPS/AP_GPS_SBF.cpp), as well for Trimble GPS (https://github.com/ArduPilot/ardupilot/blob/master/libraries/AP_GPS/AP_GPS_GSOF.cpp). So people have used these brands for drones.

For programmable open source autopilot: Arduino > Ardupilot (https://ardupilot.org).

You might also want to look at something like Ardupilot

I'd like to emphasize the reference to Ardupilot bc there is a lot of material already developed there: a lot about navigation and guidance from UAVs, and the low-level stuff. Check this out

Op, it seems your gps has m10 chipset, am I right? Because the m10 is not supported on betaflight. Or rather, it works, but betaflight sets it up incorrectly. There is a fix, but not released yet, or you have to set gps to 10hz in ucenter and disable auto convig in betaflight (and lose some features). See https://github.com/betaflight/betaflight/issues/12737 for more information. This might not be your issue, but it might be related.

I got older betaflight configurator 10.3.1 and when I look at boards in firmware flasher there's a small selection of boards and OMNIBUS is missing. So I've downloaded .hex file from here https://github.com/betaflight/betaflight/releases/tag/4.0.0 for 4.0.0 and tried to flash it from local file but nothing happens in betaflight and the quad has a constant beep sound. When I disconnect it from usb and reconnect it still works fine but its on old 3.1.0 version. I'm not sure what to do here.

Which typically run open source firmware called Betaflight https://github.com/betaflight/betaflight

I think the rc.c file has what you’re looking for.

It’s a known issue specific with the M10. I think there a workaround if you need it asap. https://github.com/betaflight/betaflight/issues/12737

Sorry for missing your question, here's a link to the PR: https://github.com/betaflight/betaflight/pull/12738

github-issue

Blackbox logging doesn’t work reliably since the Blackbox and OSD use the same SPI bus (https://github.com/betaflight/betaflight/issues/12583)

You can select between PID profiles 1, 2, or 3 via the OSD or stick commands fairly easily, and there are options to modify the individual P, I, and D terms per axis in flight using AUX channels via the adjustments tab. If you want the option to configure a 3-posiiton switch to select between PID profiles like you currently can with rate profiles, maybe bump the thread for the BF devs here.

I looked on GitHub for a similiar Issue with Darwin AiOs just now and found this from January 6th concercing 4.4 Update Errors with Accel/Gyro: https://github.com/betaflight/betaflight/issues/12145