Rocket Avionics

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David-GLXP
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Rocket Avionics

Postby David-GLXP » Mon Aug 24, 2009 9:04 pm

Has anyone tried any sort of avionics in their rockets in the way of a single board computer?
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The Wombat
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Postby The Wombat » Mon Aug 24, 2009 10:03 pm

I've got one but it hasn't flown yet.
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Burnwicken
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flight comp

Postby Burnwicken » Tue Aug 25, 2009 12:25 am

I'm building a flight computer at the moment from scratch.

So far I have on my test stand:-

2x altimeters (Dual setting for dual deployment and back up)
3x timers ( 1st for staging, 2nd for Emergency chute if staging fail, 3rd dual deployment fail)
1x 6 ch receiver (for remote arm/safe/staging)
1x 4 channel transmitter (return confirmation code arm/safe/staging)
2 x High 'G" switches( launch/staging detection)
2 x low 'G' switches ( apogee/chute deployment detection)
4 x usb sockets ( (1) for belkin wireless network card (2) for bluetooth dongle (backup) (3) for data card transfer( Data recorder) (4) for external data transfer )

2x camera (Flycam 2)( Just getting power from board. (mark2 on board))

my test stand looks like an explosion in a spaghetti factory!!!!
and I'm still looking at adding a garmin GPS (Dog tracking coller) and Radio transmition back to my laptop, to the whole thing.

All I have to do is work out why and how it all works, then draw out the wiring diagram and component placement into some thing recognizable as techno babble and get a board etched soldered and tested.............


And finally STOP MY CAT FROM SLEEPING ON MY BENCH!!!!!!!!!!!!!!!!
Burnwicken

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Postby bluecurve » Tue Aug 25, 2009 8:18 am

Hi David,

it depends what you mean by Single Board Computer (SBC).

The majority of rocketeers flying HPR (H motors and up) are flying some form of commercial altimeter board such as ALTS, G-WIZ, Parrot etc. These are used either for recording atlitude, ejecting parachutes or both. (or sometimes not, but that's another story :-((()

Most of the other rocketeers that have computer projects flying end up rolling their own to get the feature set they want at the size and weight they want. There are many off the shelf SBC's around, and whilst many of them are ok for bench prototyping, they are too ungainly to make it into the air. That said there are also many mini-boards around that are quite flyable size and weight wise but they usually end up connected to a custom sub board with pressure sensors, accelerometers etc.

Does that answer your question?

Tom


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