Hi guys! I zipped 2018-05-27 10-42-24.bin and 2018-05-27 10-42-24.log.param to this file http://webdesign.no/tmp/drone-crash-2018-05-27.zip
I purchased the drone second hand and it was flying fine on Arducopter 3.4. I upgraded it to 3.5 and adjusted gimbal settings + some other stuff. I’m new to arducopter so everything is new to me, but I have some experience with racing drones and DJI F550. I’m not sure how it was on 3.4 but on 3.5 when I was trying the drone without props, I think the motors were behaving quite strange. On racing drones when you arm it and move it around the motors are spinning in a intuitive way according which way you tilt it. The respons is instant. I had response on Arducopter 3.5, but the response was sluggish and not precise.
Same with radio reponse. I could see quite fast response in Mission Planner, but response from motors felt delayed.
I started to work on ESC settings and changed from Normal to Oneshot. I tried Oneshot 125 but there was no response from motors, so I switched back to Oneshot. I adjusted idle speed and min speed according to what I found in manual. This felt OK.
As you have noticed the drone was shaking on takeoff and this didn’t feel right. I thought it was because of turbulence so I pushed throttle a little more, until it got in the air. I tried to do this gently, and on my 3rd. try it lifted off. The second it launched I lost control with throttle.
In video I tried to fly with throttle way back and I tried to switch flight modes, I had some reponse but nothing I felt I could keep under control. Some times you see RSSI to 0, it’s when I turned the radio off, hoping the failsafe to kick inn. Failsafe was working OK when I tested drone w/o props, turning radio off. At least the drone stopped motors and disarmed.
The arducopter seems much more advanced than the stuff I am used to. It seems like the drone is aware then it’s in the air and when it’s not. I tried to lift litt off table when I armed motors, but I don’t know if I managed to fool the drone to think it was flying.
Hardware of the drone is: Luminier QAV-400, 3DR Pixhawk, 3-axis gimbal - Zhiyun Z1 TINY 2, ESCs - TBS bulletproof 30A, T-Motor MT2212 1100KV, Graupner Sport Prop 8x4,5, Mauch Electronics Volt/amp-sensor, PlayUAVOSD , Drotek FR GPS, 4S 4000 MAh, Taranis Plus, UHF Ultimate LRS 1W.
If I can guess I think I may have messed up idle/min settings of the ESC. Or messed up calibration of drone somehow. I calibrated it just before the trip, and calibration procedure was OK. Maybe I overrided channels related to sticks with my gimball settings?
I have noticed the NO HOME POSITION SET even on v3.4. But when I was flying then, I remember to test the return to home function and It was always working. I think the 3D-15 in lower right corner says I have 3D-fix with 15 satellites. Why no home position then, how to set it?
I have also noticed the ERROR IN WARNING ROUTINE message before. What does this mean, and how to solve this?
Thanks for any help!