[OZAPRS] Gps Unit
craig at craigturner.id.au
Thu Jun 22 13:16:01 EST 2006
I am planning a similar project at the moment. A friend is building the
balloon and I am building and designing the payload. We are keeping it
under 2Kg as the CASA requirements for a sub 2KG balloon are quite simple.
I am using a Maxon 2550, an OpenTracker and a Deluo GPS.
The Deluo GPS is about the size of a a matchbox and uses 5 volts. It has a
PS/2 style connector, but it is easy to make up a serial cable for it,
with a voltage regulator inside the DB9 case.
I havn't worked out the power budget yet, but I think I can bring it all
in under 1.5kg. The advantage with the Open Tracker is it sends out
temprature readings, battery voltage etc.
We are using a solar balloon, which uses the sun to heat the envelope, so
at the end of the day it should gracefully descend back down to earth.
The deluo is worth about $70. The other option is to use a Compact Flash
GPS, which I think can easily be wired up to a serial port. I have a
compact flash GPS which has the connector snapped off, and if I can get
that working, then I will use that instead.
> Greetings All,
> I am after a cheap GPS unit preferably without a screen for use
> in a proposed balloon launch. Nothing to flash as we might not
> get it back! Any suggestions or ideas most welcome, will need it
> fairly soon as balloon launch is planned for November and will
> have a APRS beacon and either 2m or 70cm voice beacon.
> The launch will be part of a month long celebration of the 95th
> birthday of Amateur Radio Victoria (formally WIA Vic
> Councillor/Treasurer Amateur Radio Victoria
> WIA Assessor 3-009 mailto:vk3fce at internode.on.net
> Ozaprs mailing list
> Ozaprs at aprs.net.au
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