Hey everyone,
Yesterday we tried our hexacopter (naza m lite, multistar 40A ESC-s, 600mm frame, NTM 800kv motors 300W) on a really big field to test the various safety functions. This includes the home orientation settings which worked well, battery voltage check (we have some problems here, it starts to flash red way before it should, so we are playing with the limits) and the failsafe RTH function. The biggest problem occurred at this one. I was flying the multi about 40 m away, 8m above the ground, nothing exceptional. (please note the field is bigger than a football pitch and nobody use it, so it was perfect for crashes) as it was the last flight that day, and the multi was hard to see, we chose the failsafe instead of the home lock (which worked pretty well before). Afer turning on failsafe, the yellow flash came on, and the multi started to ascend. After reaching some height, it navigated back above the starting point very well, and started the hovering. But after the hover (~15 sec I guess) the motors simply turned off. We have a video about it:
https://www.dropbox.com/s/67j3uzcirkz5fao/fall.avi?dl=0
sorry for the quality. Also, my friend put the camera away in shock, so the crash is not recorded. However, you can see and hear that the motors stop, while the led (and the naza I guess) is still on.
We had a lucky crash from 20 meters afterall, all we need is a new frame.
Do you have any ideas what happened?
our ideas:
Please let me now what you think. Best wishes, paland3
Yesterday we tried our hexacopter (naza m lite, multistar 40A ESC-s, 600mm frame, NTM 800kv motors 300W) on a really big field to test the various safety functions. This includes the home orientation settings which worked well, battery voltage check (we have some problems here, it starts to flash red way before it should, so we are playing with the limits) and the failsafe RTH function. The biggest problem occurred at this one. I was flying the multi about 40 m away, 8m above the ground, nothing exceptional. (please note the field is bigger than a football pitch and nobody use it, so it was perfect for crashes) as it was the last flight that day, and the multi was hard to see, we chose the failsafe instead of the home lock (which worked pretty well before). Afer turning on failsafe, the yellow flash came on, and the multi started to ascend. After reaching some height, it navigated back above the starting point very well, and started the hovering. But after the hover (~15 sec I guess) the motors simply turned off. We have a video about it:
https://www.dropbox.com/s/67j3uzcirkz5fao/fall.avi?dl=0
sorry for the quality. Also, my friend put the camera away in shock, so the crash is not recorded. However, you can see and hear that the motors stop, while the led (and the naza I guess) is still on.
We had a lucky crash from 20 meters afterall, all we need is a new frame.
Do you have any ideas what happened?
our ideas:
- barometer is off, and it thought it has already landed
- strange, because we had stong gps signal on the ground and did not take off before the led light.
- but also the altitude holding was a little bit strange during the flight, had to play with throttle to keep it, ~+-3m change was often (we had a fairly tricky wind, though)
- ESC -s cut off way before they should have
- Naza motor cut off (intelligent/immediate) problem?
- Naza firmware bug?
Please let me now what you think. Best wishes, paland3