On Wed, Aug 3, 2011 at 7:00 PM, Rui Costa <
address@hidden> wrote:
> Great solution! Thanks for sharing. :)
>
>
>
> Cheers
> Rui Costa
>
>
>
> On Wed, Aug 3, 2011 at 8:56 AM, Reto Büttner <
address@hidden>
> wrote:
>>
>> See:
>>
>>
http://www.millswoodeng.com.au/failsafe_device.html
>>
>> Cheers, Reto
>>
>> 2011/8/3 Bernard Davison <
address@hidden>:
>> > You'd have to have a separate path to control the servos.
>> > At the moment everything is going through the paparazzi flight computer.
>> > So if something in it crashes then the system will be left hopefully in
>> > a
>> > failsafe mode.
>> >
>> >
>> > On 03/08/2011, at 6:30 PM, Rui Costa wrote:
>> >
>> > Since we are talking on redundancy. Is there any way to have a sorte of
>> > an
>> > watchdog board that will change to an independent manual control of the
>> > aircraft if any paparazzy board crash was detected? Some kind of a
>> > relay/switch?
>> >
>> >
>> >
>> > Best regards
>> > Rui Costa
>> >
>> >
>> >
>> >
>> > On Wed, Aug 3, 2011 at 8:09 AM, Reto Büttner <
address@hidden>
>> > wrote:
>> >>
>> >> Hi Vladimir,
>> >>
>> >> the effectivity of redundancy measures depend very much on the failure
>> >> mode. If the main Paparazzi board completely fails, you are right.
>> >> Then the plane is not steerable anymore, neither autonomously nor
>> >> manually and the plane crashes. The main Paparazzi board is a very
>> >> hard to avoid single point of failure. But if the main paparazzi board
>> >> only fails partially (e.g. autonomous control loops not working
>> >> properly anymore), only the GPS, the IR sensors/IMU/INS/AHRS or the
>> >> serial data link fail, then the redundancy using FPV and a separate
>> >> OSD will save your aircraft.
>> >>
>> >> Cheers, Reto
>> >>
>> >> 2011/8/2 Volodymyr Khudyakov <
address@hidden>:
>> >> >
>> >> > If Paparazzi fails, you simple fall to ground...
>> >> > All control you have from AP board and any OSD can help you.
>> >> >
>> >> > Sincerely
>> >> > Vladimir
>> >> >
>> >> > Date: Tue, 2 Aug 2011 15:21:47 +0200
>> >> > From: Reto B?ttner <
address@hidden>
>> >> > To:
address@hidden
>> >> > Subject: Re: [Paparazzi-devel] On Screen Display
>> >> > Message-ID:
>> >> >
>> >> > <
address@hidden>
>> >> > Content-Type: text/plain; charset=windows-1252
>> >> >
>> >> > The OSD of C?dric based on the Paparazzi data stream is great. Very
>> >> > compact and well integrated. Thanks for developping and sharing.
>> >> >
>> >> > For long range missions I prefer a separate OSD system for redundancy
>> >> > reasons. If Paparazzi fails you can complete the mission using FPV
>> >> > and
>> >> > OSD. If FPV and/or OSD fail you can complete the mission using
>> >> > Paparazzi.
>> >> >
>> >> > Cheers, Reto
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > _______________________________________________
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>> >> >
https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>> >> >
>> >>
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>> >
>> >
>> > --
>> > Rui Costa
>> > _______________________________________________
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>> >
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> --
> Rui Costa
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