I'm hoping that you can help.
I own several quads/hexcopters and in July of last year, they ALL suddenly stopped flying stably.
I'd flown them for about a year and had great result with video/stills etc, then in early July I updated the APM2.5 software and they all stopped calibrating ESCs properly and flying. ALL but ONE. I didnt update the one quad when I noticed the consistent errors.
Today, this quad still flies perfectly. I havent updated the software on the board. The ESCs all calibrate perfectly and it flies well.
I've tried new motors, new ESCs, made new builds and all of them are unstable. The last one this week just tipped backwards.
PLEASE dont tell me to Manually calibrate ESCs, I've done that. Likewise, there are no hardware issues, no problems with motor direction of prop placement and direction.
Literally, everything just stopped flying in July 2013
I'm not looking for anything fancy with the units. I just want simple stable flight. Nothing more
Any ideas anyone? APM2.5+ boards on all units