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

[Ben Laurie]

On 8 October 2013 11:12, Freek van Tienen <address@hidden> wrote:
> If you can upload the files somewhere and send the link to the mailinglist,
> that would be nice.

Rather large, I'm afraid - I left it running after the flight. BTW,
when I try to replay it, I get lots of errors and no display (never
tried this before, so not sure what to expect).

https://www.dropbox.com/sh/del1n2tbunksdys/Cd4BRAQ9rL

>
>
> 2013/10/8 Ben Laurie <address@hidden>
>>
>> On 8 October 2013 09:59, Freek van Tienen <address@hidden>
>> wrote:
>> > 2013/10/7 Ben Laurie <address@hidden>
>> >>
>> >> On 7 October 2013 10:23, Christophe De Wagter <address@hidden>
>> >> wrote:
>> >> > You "bricked" your flight-recorder?
>> >>
>> >> Well, maybe - but I didn't actually do anything to it between working
>> >> and not-working. :-)
>> >>
>> >> Does the ardrone reset it, do you think?
>> >
>> >
>> > Yes the ardrone original software does reset and also configure it.
>> >>
>> >>
>> >> > If you can not manually configure the "ublox6***" in ucenter, then
>> >> > the
>> >> > AP
>> >> > module will not be able to do it either.
>> >>
>> >> It wasn't clear to me how to manually configure it to do UBX in
>> >> ucenter, tho the fact other functions didn't work made me suspect I
>> >> wasn't going to be able to even if I knew how - do you know how?
>> >>
>> >> > In some cases, the baudrate of usb devices is not important but in
>> >> > many
>> >> > cases it still is. (e.g. usb->serial converters like the prolific
>> >> > chip
>> >> > in
>> >> > the flightrecorder)
>> >>
>> >> Ah, sure.
>> >>
>> >> > Even if the position fix is way to slow, there is no reason to fall
>> >> > out
>> >> > of
>> >> > the sky. It might be unstable and constantly move left/right but if
>> >> > it
>> >> > falls
>> >> > out of the sky you probably should reduce the max-bank angle to start
>> >> > with.
>> >>
>> >> I'll give that a try. What setting(s) would I change to make it
>> >> generally fly less aggressively?
>> >
>> >
>> > MAX_BANK inside the GUIDANCE_H of your airframe file. Start with that.
>> >>
>> >>
>> >> > And if after take-off it moves laterally instantly, then make sure
>> >> > your
>> >> > accelerometer neutrals are calibrated correctly.
>> >>
>> >> It doesn't - it hovers for a short while, then heads off. But I guess
>> >> I should calibrate everything, too!
>> >>
>> >>
>> >> Oh, I forgot to mention another issue - because the ardrone upload
>> >> includes the kernel driver for u-blox, you have to plug in the GPS
>> >> _after_ the upload, or it isn't recognised.
>> >
>> >
>> > Yes that's right, we haven't fixed that yet because we use a ttyUSB
>> > cable
>> > instead of direct ttyACM which is available at some uBlox GPS'.
>> >
>> > BTW. Do you have the logs of the flight? Because I'm really curious
>> > about
>> > what happened.
>>
>> Sure. Shall I email them to you? To the list? I should learn how to
>> look at logs!
>>
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