Solo flyaway and crash during auto mission

@jabelone wrote:

Hi Folks,

I was flying my solo using tower and running an autonomous mission. It worked great at least once earlier in the afternoon. I armed solo then switch into auto. It took off straight up and started heading towards the first waypoint. Then it went nuts and started to fly away.

I tried to bring it back with the sticks but got no response. Then I hit the pause button (ie brake mode) a few times which had no response. I then tried the fly button (loiter mode) which didn't do anything either. It got to a point where it was about to reach some buildings so I disarmed it mid flight using the (a+b+pause) button combo.

Unfortunately it was too dark by the time I got to the crash site. I waited until morning and with the help of a friend found solo about a metre under water in the creek. Remarkably no damage but it was water logged with salt water and the battery firmly in place . I'm cleaning all the pcbs now.

I've flown ardupilot for years and know these flight controllers don't just fly away. I'm very happy to admit fault if it's something I did but I couldn't see anything from the time I spent going over the logs. The behaviour looked like a GPS glitch but the log and the fact it was exactly where the last GPS co ord was makes me think otherwise. I would really appreciate if someone with a more experienced set of eyes could take a look at my logs. Thanks!

Dataflash Log: 150.BIN (1.0 MB)
Telemetry Log: solo.tlog (2.3 MB)

Posts: 3

Participants: 2

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