I have been trying to connect a Ublox NEO M8N GPS to ArduRover 4.2 on my Pixhawk 2.4.8 with Mission Planner v 1.3 as the GCS. Every time I try to turn on the rover, I get the message “GPS: NO FIX” and “Warning: Unhealthy AHRS”. I’ve recalibrated more than once, used more than one of the same model… but I receive the same message every time. I even took it out to a field on a sunny day with clear skies to no avail. What could be wrong? The LED on the GPS also always remains red, I never see a blue light like a correct connection would show. Here is the parameter file: ugv-param.param (14.3 KB)
Could there be any alternatives to using GPS for Auto mode using Rover? I have some rangefinders that can interface with the Pixhawk as well that may be able to do the Job. Thanks!
Usually you let them sit long enough to an open sky and they will find satellites. Try setting GPS_GNNS_MODE to 65 and reboot. This depends on where you are but GPS+GLONASS works just about everywhere.
Thank you! I will try this. Those parameters were previously set to zero. Would that mean it’s didn’t have any mode set up?
Also sorry for so many questions, but does it need to be a sunny sky with no clouds in an open field to work, or will it at least increase my chances? I’ve tried it before in a cloudy sky without success, but I also took it out to my apartment’s courtyard on a sunny day and a nearby park on a sunny day with no luck either time.
I don’t know, I have a few small quads with the GPS module packed in pretty tight and I don’t have GPS reception problems. On my Rover I have 915Mhz RC, 915Mhz telemetry and a WiFi radio on a vehicle about that size and I don’t have a problem with that either. You can try foil but I have never had to use it.