@nekolny , please check this post: https://forum.modalai.com/topic/3232/disable-gps-and-compass
you can disable GPS by unplugging it or edit /etc/modalai/voxl-px4.conf and set GSP=NONE , but you also need to set the following params to tell EKF to not use the compass if you unplug the gps module (which has compass on it)
SYS_HAS_MAG to 0 EKF2_MAG_TYPE to 5