I had some unexpected "let's fly to Timbuktu" events with 3.01 so I upgraded to 3.1rc2 to see whether GPS glitch prevention would make a difference
Did all the calibrations and compassmot, all results looking good.
Having tested all modes (all fine) I let it fly a very simply 4 waypoints mission (log attached). En route from 2 to 3 it apparently fell out of AUTO mode, turned left 90 degrees and went its own way. I managed to catch it and land without a problem in Stabilize mode. If I read the log correct my satcount dropped to 7 (from 12) for a few seconds - this however should still be a solid 3D fix ? So why drop out of AUTO mode ?
Just to make sure I rebooted and flew the exact same mission again immediately (second log attached). This time no problem at all
Really not sure what my problem is here
Replies
I don't believe 3.1rc2 contains yet GPS glitch prevention, see release notes.
It contains a GPS condition for arming, but I don't believe is related to glitch.
Maybe will be on next release.
Release Notes
Hi Sam,
i have seen this as well but im still on 3.0.1
Ive flown quite a few missions now but there's a particular route i take that in the same spot on that route the copter yaws around and seems to not know where it is. No Altitude is lost and it usually regains control and continues on.
When i look at my logs like you i see the sat count drop from around 12 to 9 but the HDOP is still no more than 2.
Could it be the Compass ? Ive just turned logging on for the compass thinking that there might be something in that but i can 100% confirm a Sat count drop is present right at the time the copter behaves wierdly.
FYI APM2.6 with external GPS Compass from 3dr.
I am really keen for someone to explain the "GPS Glitch" i hear is fixed in 3.1. I mean what is it and would the logs show it up ?
regards
Matt