IMU challenge in an Autonomous Pi Airplane

Hardware Planes
1

*NOTE - I’m not using ArduPilot in my project, but I’m posting this here as I believe there is a lot of knowledge in this forum :slight_smile:

Hi,

I’ve recently built an RC airplane and now I want to add autonomous features using a raspberry pi 4. I wanted to use a (BerryGPS-IMU) for this purpose, but I encountered a problem - when accelerating, the IMU loses its accuracy (probably caused by the non-gravity component of the acceleration which the accelerometer is sensing). Acceleration, of course, will be present at all times during a flight and therefore I cannot allow such inaccuracy (can get to 20 degrees error in pitch and roll angles). I would appreciate any suggestions on how to deal with the problem, recommendations for different IMUs or algorithmic solutions to reduce the error.

Thanks is advance,
Guy

2

The easiest and most reliable solution is to use a proper flight stack such as Ardupilot running on supported hardware you will save yourself a lot of hedaches.

3

Without more details, no one can help do anything, and the motivation will be very low, given the unknown software and obscure hardware.

For a similar price, a fully featured autopilot with an STM32 processor and higher quality onboard sensors can be had. Matek systems makes some excellent candidates, among other manufacturers like QioTek and Hex/Cube.