Hi, when I trigger RTL my quad returns to home and lands without any problem. The motors slow down but don't stop, if I now move the throttle to zero the quad takes off again (in loiter or alt hold?). Is this the behaviour that you would expect? To stop the props i then put the throttle to half, return to stabalise and then land manually.
Cheers,
Dave.
Replies
In ALT_HOLD, LOITER and RTL the props keep spinning on touchdown but at a much reduced yet constant rate. I then reduce the throttle to zero and switch to STABILIZE and they then stop, this behavior I experience and have come to expect. Taking off again does seem odd though.
What are your RTL parameter settings, specifically RTL_ALT_FINAL? (The value is in Centimeters).
https://code.google.com/p/arducopter/wiki/AC2_RTLMode
My RTL (landing) procedure is as follows:
Once the 'copter has descended to it's final altitude and starts to loiter at about 2m (I have RTL_ALT_FINAL set to 200), I reduce my throttle to zero and it descends to the ground, at the moment of touchdown I flick back to stabilize to cut the motors. I often land in LOITER this way too for a safe steady landing.
What happens when you drop your throttle to zero after engaging RTL but before it lands?
The firmware is 3.0.1. An update to the above. I did about 10 RTL flights today and although the quad lands within about 3 mtrs every time it still doesn't shut off the motors on landing. Sometimes it takes of to a height of a foot or so and repositions and lands again and other times it just slows the motors but doesn't stop them. It does this when landing on grass or concrete and does the same if the throttle is reduced to zero before the landing. It's not a huge problem but does anyone know why it does this?