Re: [Paparazzi-devel] Tiny 2 and IR, gyro settings

[Pascal Brisset]

Stephen L Hulme wrote:
> Dear Pascal 
>  
> The photo: -  http://paparazzi.enac.fr/wiki_images/Tiny_v2_1_Funjet.jpg you refer to below raises more questions than it answers below.
> The sensors on the back plate look unrecognizable to those detailed and explained in the wiki other than the dual axis sensor mounted on top. 
> I would love to have an expananation of the details of the two minature PCB's mounted on the vertical plane of the back plate.
On the vertical plane are glued a gyro and ... the USB plug.

> And even more fascinating: - what is the function of the two drilled holes in 
> the polystyrene module glued into the back cowling?
Two air inputs for a chemical sensor ... They are not required on all 
aircraft :-)

--Pascal

> Those of us with watchful wives overlooking our expenditure have to know these things before we have to double up on the expenditure 
> with failed attempts of mediocrity.
>  
> Regards
>  
> Stephen L Hulme     
>  
>  
> Pascal Wrote:
>  
> Hi Uttam,
>
> Uttam Chandrashekhar wrote:
>
>     Hi Pascal,
>
>
>     Thanks you! I didn't know the wiki was updated, I should have
>     looked before asking. Sorry! It's mostly all clear now, only one
>     question. What does horizontal sensor tilted/aligned mean? 
>
> "Aligned" means that the axis (ir1, ir2) of the horizontal sensor 
> correspond to the axis of the aircraft (lateral, longitudinal). It is 
> the way it is mounted on our twinjet: 
> http://paparazzi.enac.fr/wiki_images/Ricou.jpg
> "Tilted" means that the axis of the sensor are 45° from the axis of 
> the aircraft. For example on our Funjet (and most of the Paparazzi 
> aircraft): http://paparazzi.enac.fr/wiki_images/Tiny_v2_1_Funjet.jpg.
>
>     What is the optimal position to place the horizontal and vertical
>     sensors? 
>
> As close as possible to the board to reduce the noise from the wires. 
> But usually strong geometrical and mechanical constraints come from 
> the airframe.
> If you design your own airframe, you have to think about it as soon as 
> possible.
>
> --Pascal
>
>     Regarding the telemetry. I will first try using the serial
>     protocol and a direct cable connection ( Computer USB->Serial on
>     Tiny??? )? I have the maxstream modems too.
>     computacenter
>     -Uttam
>
>     ----- Original Message ----
>     From: Pascal Brisset <address@hidden>
>     To: address@hidden
>     Sent: Tuesday, January 15, 2008 1:46:30 AM
>     Subject: Re: [Paparazzi-devel] Tiny 2 and IR, gyro settings
>
>
>     Information about the infrared configuration has recently been updated
>     in the wiki:
>
>
>     http://paparazzi.enac.fr/wiki/index.php/Airframe_Configuration#Infrared
>
>
>     You should find there some answers to your questions.
>     http://paparazzi.enac.fr/wiki_images/Ricou.jpg
>     Your next step probably is to set the telemetry. You can use a cable
>     (USB/serial 3.3V converter) to start.
>
>
>     --Pascal
>
> Stephen L Hulme
> 21 Waitohu Road
> York Bay
> Lower Hutt 5013
> New Zealand
> Tel:+6445769133
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>
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