Landing RTL drone flips over ( stupid mole hill, or grass) and will not turn off. This happened to me on a landing a few times. The device will flip over and continues running, I cannot shut it off. I use down to the left, no dice in any mode. It finally killed itself. Is there a way to program a death switch? The last time it ate up a pair of blades.
I have had this happen a few times, on 2 separate drones.
Replies
I'm using APM 2.6, all my missions end with RTL.
6 feet or so, I pull the throttle all the way down.
At this point, APM controls throttle, and at the moment of touching, I flick to STAB mode.
Hasn't failed me yet......
It helps to come from a "real rc heli" world :-)
+1
I do exactly the same on 2.5 and have never had a problem i also come from rc heli background
+1
Real rc heli habbits rock.
The downside is that you sometimes try to "disarm" rc heli when land. It turns to be dangerous ;)
@Tim there is no need to tweak anymore autotune is like magic (if you remember back in the day) If there was a kill switch users would trigger it by mistake and then complain that there is a kill switch. If the quad is moving on rough terrain it will dig a skid in. Just like a real helicopter look for dynamic roll over (well not quite the same but similar)
Only fly where there are suitable large clear flat areas until you are more handy flying manually.
A switch to stop the motors seems to me to be a no brainer. I had a RTL that cost four blades possibly due to a last minute gps adjustment. In RTL, I didn't have control of the throttle. In my first prop replacement incident, I let the iris+ land itself and the land detect feature was to slow, it tripped on a pebble and flipped. Props did not stop spinning till all were damaged or broken. In my attempt to put a kill switch in, I tried the MOT_SPIN_ARMED to 0. This caused the motors (three of them) to start spinning at about 40% throttle on the next flight attempt. I didn't want to risk even more broken props, so the iris+ is now grounded.
With more than 400 parameters, I realized I was way over my head trying to customize the settings. So I'm learning how to tweak CC3D, Naze 32, and the KK2.1 boards on some 250 quads. Maybe after a little more learning and tweaking, I might be ready to tackle the Pixhawk and Mission Planner again.
Yup, what SkyRover said. When I use the "land" switch, I'm in Stab mode, I usually forget to pull the throttle down until it's on the ground, but have never had a problem with it flipping. I think some people may try to disarm too soon, which results in a full left yaw, which will make the quad do all kinds of funky things. As far as the "crash detection", I accidentally flipped into "auto" one day, while under the tree canopy of my 1 acre forest. I assume because I didn't have any flight plan loaded, that the Iris+ went into RTL, and was trying to go to it's pre-set altitude, before landing, as it suddenly started climbing, and the throttle did nothing! I watched it bounce off of 2 tree branches, before I realized what I had done. Funny, after striking a tree, it would bounce off, right itself, and continue to climb, bouncing, and righting itself, each time. When I realized I was in "auto" and switched back to Stab, I had the throttle pulled all the way back, so of course, she came back down rather quickly. Only damage was a slightly nicked prop. Yes, the Iris+ was smarter than I was!
This one made a mess of my machine, it would not turn off.
It does have crash detection but it is way to slow. I suspect this is to allow recovery if it hits a tree as an example. But once the Altitiude is under a certain threshold it should turn off much faster.
Hi Kris:
I think a "death" switch is a good idea. I had my IRIS fly almost out of sight it was so high (1,100+ feet) . Fortunately, I had pitch/roll/yaw so I could keep it overhead, but no throttle. After a 300' plummet to earth, my IRIS is now on its way back to 3DR.
Anyone out there know how to program a "kill"switch?
-
1
-
2
-
3
-
4
of 4 Next