I have an APM2.5 running on a SK450 with whatever the latest version of arducopter firmware is. Using a ublox gps and 900mhz radio telemetry modules with 2.4 for rc control.
In stabilize mode the quad works great. I fly up to about 5m altitude switch on loiter and then it behaves erratically, flies sideways, down tips and crashes. Done this twice.
I though loiter was meant to 'lock' the quad in position and only move with inputs from me.
Anyone got any ideas - i think the hardware - escs, motors, all the acceloromters, gyros, gps etc seem to be working fine in stabliize - so it must be something else?
Thanks so much for any help.