@Muqing-Cao In the voxl-vision-hub configuration file /etc/modalai/voxl-vision-hub.conf how is the parameter en_vio set?

@voxltester That is not a normal option to choose via voxl-px4.conf. You will need to hand modify the startup script /usr/bin/voxl-px4-start to properly start the driver in i2c mode. Use option -b 4 to select that i2c bus.

@remill libusb doesn't use cmake. It uses autogen.sh, configure, make, etc. These are standard Linux build tools. If you enter a query such as "How do I build libusb on Linux?" into Google and check AI mode it will provide you with all the steps.

@Nitin-Varma-Vegesna If you are just flying in manual or altitude hold modes then those shouldn't be an issue.

@voxltester Only if it is connected to a GCS that sends the Mavlink SYSTEM_TIME message.

@Nitin-Varma-Vegesna I think it's this one: https://store.3dr.com/mini-gps-ublox-max-m10s/

@mkriesel First steps would be to verify that the correct propellers are installed, that all the propellers are spinning in the correct direction and that the motors are mapped correctly.

@Nitin-Varma-Vegesna None

@Nitin-Varma-Vegesna In /etc/modalai/voxl-px4.conf set GPS to NONE. Then set the PX4 parameters SYS_HAS_GPS, and SYS_HAS_MAG to 0. Set EKF2_MAG_TYPE to 5. Set EKF2_GPS_CTRL to 0. Then reboot and see if the preflight error is cleared.

@remill said in Different package version from voxl-cross and Voxl2:

1.0.27

Perhaps you can build the desired version of libusb from source and install it? We have used this approach for a variety of other "third party" libraries. Examples are here: https://gitlab.com/voxl-public/voxl-sdk/third-party?page=1