The drone does not use the compass on the GPS when determining its direction

reseracher · September 13, 2024, 9:02am

Hi,
We are developing a drone swarm. We are using:

px4 beta
mateksys h743-slm v3 dosn’t have compass
mateksys GNSS & Compass, M10Q-5883 has a compass
We have a problem like this. After calibration, every time we start the drone, the direction of the drone appears wrong. In the tests we conducted, when we rotated the flight card, we observed that the direction indicator in QGround rotated, and when we rotated the GPS (it has a compass inside), there was no rotation. I am attaching some outputs below. We would be very happy if you could help.

We get magnetude value than convert it to degree with blow code:

import math

def calculate_heading(x, y):
    heading = math.atan2(y, x)  # Calculate the radian angle
    heading_deg = math.degrees(heading)  # Convert to degree
    if heading_deg < 0:
        heading_deg += 360  # set between 0 and 360
    return heading_deg

x_mag =  0.15850
y_mag =  0.03083
heading_deg = calculate_heading(x_mag, y_mag)
print(f"Compass: {heading_deg} degrees")

drone looking north