I'm using all the lastest firmware, 2.5 I believe. I've been flying my new quad since last Friday, with wonderful results, this APM2 is absolutely incredible!
Anyway, this morning, I was loitering, about 3 meters in elevation, it suddenly went to the ground (hitting it), then back up! It's never done this before.
I landed it and everything seemed ok, so I flew several times again. Then "one last flight", I took off like a bat out of heck, (I love doing that!), it went up to about 50 meters, then it stopped responding to my radio, the quad was going left, but I couldn't make it go right. It still seemed to be flying, but then suddenly the motors stopped, and it fell all the way down on the (fairly tall) grass. Nothing I could do. It hit the ground right side up, then flipped over.
I broke a prop is all, I replaced the prop, and everything still works. I've flown it since, and everything seems to be working fine. I looked at all the connections, everything seems fine.
I don't have a telemetry kit, but I just ordered two of them, so I'll start logging my flights.
I charged the 5000 mah battery and it only took 1700 mah, so I know it wasn't a dead battery.
Does anybody have any ideas what went wrong?
Short in my kludged 5 volt regulator for my radio camera. (Later flights I disconnected this). There's no evidence of this happening, I was pretty careful. I do electronics for a living....
Obscure quad bug in version 2.5.
For show and tell......
First Flight Video, taken Friday, 06-08-2012:
(excuse the bad language of the camera man!!)
Picture of me in my shop, holding my quad....
Dan Gray, Portland, Oregon