Post Mortem - ARDUCOPTER Crash. What happened? - Discussions

I am having this same issue, except with a quadcopter. I am using an APM 2.5 with the Mediatek GPS. I haven't done too much flying with the current configuration yet, but during the last testing run we were testing waypoints. Stabilize mode is definitely working very well.

The first time it happened was when we were tuning loiter. The copter was circling a little bit, so we switched it back to Stabilize and it practically flipped out of the air.

The second time it happened was when we were testing waypoints. When we flipped the switch for Auto, the copter starting going off quite a bit to the left of the first waypoint. However, when we switched back to stabilize the copter starting spinning and flipping before crashing to the ground (we did cut throttle shortly after loss of control).

It seems that it may have something to do with the GPS not working quite right, and then switching to stablize. I don't want to jump to conclusions though.

The log files are of the second time it happened. It's roughly one hour of flight testing, and the crash is at the very end. We had just switched to a new battery, which was also fine afterwards, so that's not the problem.

Anyone know what's going on?

2013-07-16 13-06-08.tlog

2013-07-16 15-50 3.log

2013-07-16 13-06-08.rlog

Replies

Dick Ou October 24, 2013 at 11:33pm

I have the same problem many time, I can't find the reason, attachment is last fly log and tlog, anyone can analysis it and find out the reason.

Thank in advance

2013-10-25 13-25 5.log.gpx

2013-10-25 12-04-30.tlog
CyberCrash July 19, 2013 at 4:27pm

Smth like that happend to me on 2.9.1.

Suddenly lost control. Copter was swinging like in your video totally out of control.
Franton Lin July 19, 2013 at 9:43am

I am having this same issue, except with a quadcopter. I am using an APM 2.5 with the Mediatek GPS. I haven't done too much flying with the current configuration yet, but during the last testing run we were testing waypoints. Stabilize mode is definitely working very well.

The first time it happened was when we were tuning loiter. The copter was circling a little bit, so we switched it back to Stabilize and it practically flipped out of the air.

The second time it happened was when we were testing waypoints. When we flipped the switch for Auto, the copter starting going off quite a bit to the left of the first waypoint. However, when we switched back to stabilize the copter starting spinning and flipping before crashing to the ground (we did cut throttle shortly after loss of control).

It seems that it may have something to do with the GPS not working quite right, and then switching to stablize. I don't want to jump to conclusions though.

The log files are of the second time it happened. It's roughly one hour of flight testing, and the crash is at the very end. We had just switched to a new battery, which was also fine afterwards, so that's not the problem.

Anyone know what's going on?

2013-07-16 13-06-08.tlog

2013-07-16 15-50 3.log

2013-07-16 13-06-08.rlog
Guy Midkiff July 19, 2013 at 9:14am

Knew someone would ask that. No, I was having problems with my lap top.
RickP July 19, 2013 at 8:46am

Any chance of logs?

This reply was deleted.