Few days ago, I was testing my new build. I made a small waypoint mission. First time i did it, everything worked fine. After few hours, i attempted the same mission again.
I took off in stabilize, then switched to loiter for few seconds to test the position hold. The position was held relatively well. There was quite some wind…about 20 Kph. I later switched to stabilized, gained some altitude then switched to auto. The Hex flew towards waypoint 1 then suddenly flew away very fast. It flew with the wind and got caught up on a tall thorny tree. I lost 4 props. Everything else was ok.
Im quite new to APM, i have been trying to analyse the dataflash log file. I can see APM lost GPS satellites before flying away.
My question are:
Could anything that i set up wrongly have been the cause of the GPS satelite loss?
What is the best option for GPS failsafe?
Attached is the log file. I will also be very glad to get some tips on how I can improve my setup.
FRAME: Tarot T960 , FOXTECH 5008 - 340kv, 40A SimonK ESC, 1555 CF Props
APM 2.6 with external GPS/Compass
RADIO: turnigy 9XR/FRSKY
BATTERY: 6s 9000mAh