Hi all,
This is my 2nd week with my first F450 running my first Pixhawk(APM). It fall down from about 20ft at Loiter mode and luckily only with 1 prop was broken ,other components seem to be ok
Pixhawk 3.2.1
Motor: sunnysky 2212-980kv
Prop: 1047
Battery: 2200mah 3s / 2200mah 3s x 2
Wind: Low, can't feel much at ground level
- Right before the crash, I run autotune and my bird was pretty smooth by carrying 1 x 2200mah 3s battery
- Then I loaded 2 x 2200mah 3s battery to try to max the airtime. However, it roll like a boat about 20ft Loiter mode after flying 5mins and the quad just can't kept itself steady and I didn't change to other mode as I wish miracle would happen.
After reviewing the logs, it seems pretty obvious that it was due to mechanic failure for Roll vs DesRoll
If somebody can give me a hint based on the log file i attach to this thread i will be very grateful.
My Questions:
1. Is that ok to carry 2 pack of 2200mah battery by using the autotuned PID when it was carry 1 pack of battery?
2. Should I use 9" prop or 10" is also fine?
3. What would be the possible cause? broken prop in the air? ESC out of sync? motor?
Thank you in advance...
Replies
Hi Hugues,
Many thanks for your analysis. My pixhawk was mounted on this vibration board and it was indeed the second time I found the upper deck detached from the bottom deck. Perhaps I should fix the board before I fly again, many thanks!
on a second thought, I did able to find the blue rubber next to where my F450 dropped. So can I assume the anti-vibratio board fall apart when it hit the ground?
The original mount is here and of much better design to hold the rubber balls better:
http://www.thingiverse.com/thing:163472
(you can 3D print it yourself or buy it online)