Discussions

I have a new 3DR quadcopter running 2.9.1 which I've flown a few times over the last month or so.  I was able to fly in Stabilize mode, Alt Hold, Hover, and manually put in in RTL once for testing and it worked with no problem.

Since the last time I flew it, I enabled the Battery Monitor, Battery low failsafe, and Throttle Failsafe.  I set up my transmitter and receiver to drop the throttle below the normal range when the receiver loses the signal.

Yesterday, I took it for a flight...  I hovered it manually (within a few feet of the launch point) until it apparently got a momentary loss of signal, went into RTL, climbed, tilted to a crazy attitude and flew in a huge arc farther and farther from the launch point, slowly losing altitude until it crashed into a sticker bush (with no apparent damage!).

The logs show the ERR FS 2, Auto Armed, Ascending, MODE RTL, then ERR FS 0.  That's about when things went south.

The WP Distance increases continuously while the Nav Roll and Nav Pitch values go nuts.  The actual roll and pitch seem to match to Nav Roll and Nav Pitch, so I assume it wasn't a motor or ESC failure.

Any ideas?  This is the first time I've looked at a log, if I've missed something obvious, that's why.

Rich

2013-03-10 12-11 52.log