I have a 3DR PX4 board. Following the instructions from here:
I am able to connect to it the external GPS + compass module from 3DR and calibrate it correctly on Mission Planner.
Now I try to use the LIS3MDL magnetometer as the external compass. The magnetometer is mounted on the STEVAL-MKI137V1 board, which has an I2C interface.
Unfortunately, the LIS3MDL is not detected by the PX4.
Firmware version I am using: APM:Copter V3.4.6
I am powering the magnetometer with 3.3V from an external source, and connecting the grounds of the source and Pixhawk together. I checked the wiring, and it seems to be ok.
This magnetometer seems to be supported in the firmware repo to be connected on the I2C:
Thanks a lot, any help will be appreciated