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Re: [Paparazzi-devel] ardrone2_raw starts but doesn't fly

From: Freek van Tienen
Subject: Re: [Paparazzi-devel] ardrone2_raw starts but doesn't fly
Date: Sat, 5 Oct 2013 15:42:18 +0200

You should check the hight of the waypoints compared to the current hight. What I could think of is that it didn't do a good "Geo init" and doesn't have the correct height.
The other thing I could think of is that if you have a joystick connected you should set it into NAV(AUTO2) mode, and give no thrust at the Start engine block(else it can't start the propellors) and give full thrust after the propellors are turning before entering the Takeoff block.

1. The Geo init block: This one updates the waypoints positions and height of the drone in respect to the current GPS position.
2. The Start engine block: This block starts the propellors at the lowest speed, so they should be turning but it should not take off.
3. The Takeoff block: This block let the drone takeoff and go to the next block in the flight plan. So then it should really go to STANBY for example. (Keep in mind that if you have a joystick connected you must give full thrust, because the thrust of your joystick is the limit of thrust the drone can give)

2013/10/4 Ben Laurie <address@hidden>
Any hints on how to debug this? For a change, my weekend is clear!

On 1 October 2013 11:50, Ben Laurie <address@hidden> wrote:

On 1 October 2013 11:38, Christophe De Wagter <address@hidden> wrote:
For take-off you are supposed to

1) click the start engine flightplan block
2) click the takeoff flightplan block

Hmm. I did that, I think. As I say, it didn't take off, but it did spin the props.

What would I expect to happen at these two stages?
We have no experience (yet) with flying in raw mode with the Parrot Flight Recorder. 

Happy to help debug, but not sure what I'm looking for - why might the GPS prevent takeoff?

I do have a ublox GPS on order, btw.


On Tue, Oct 1, 2013 at 10:46 AM, Ben Laurie <address@hidden> wrote:

On 30 September 2013 14:46, Ben Laurie <address@hidden> wrote:
OK, so I got the Flight Recorder working is sirf mode.

But when I tried to actually fly it, it was a bit weird.

At first, it kept losing GPS fix and switching itself into KILL and refused to do anything. After a few restarts, it seemed to stop doing that, and switching to the Takeoff block span the motors up, but not fast enough to actually take off - it just sat there with everything spinning.

Am I do something wrong? What am I actually supposed to do for takeoff? Go to Start Engine first? Or what?

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