GPS module needed for HAB

Tips and questions relating to the GPS modules from SFE

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deschrijvere
Posts: 3
Joined: Sun May 01, 2016 11:26 am

GPS module needed for HAB

Post by deschrijvere » Sun May 01, 2016 11:40 am

Hello,
I purchased several GP635 modules for educational HAB (high altitude balloon) projects, as they were rated for <50000m applications.
However <50000m seems to have been "misleading information" to put it very, very diplomatically, as the module just freezes at 12099,0996meters, which is below 40000feet! Technically, that is <50000m, but it's also <4 lightyears, so why not advertise it that way?

Besides feeling cheated, a lot of students that worked hard on their science projects, now cannot draw adequate conclusions by lack of altitude data.

So, what's the solution here (besides getting even, which is a goal my upbringing discourages me from pursuing)? Are there gps modules that are KNOWN to work up to 150 000feet or 40km? I'm not in the US, but in an allied country, I'm not hostile to the US, have no sympathy for causes running contrary to US interests (if any oif that matters), and the modules are intended for STEM project ONLY.

Eager for news,

Erik

jremington
Support Volunteer
Posts: 2202
Joined: Fri Jun 15, 2007 9:41 pm
Location: Eugene, Or

Re: GPS module needed for HAB

Post by jremington » Mon May 02, 2016 8:15 am

Have you contacted the GPS module seller/manufacturer?

deschrijvere
Posts: 3
Joined: Sun May 01, 2016 11:26 am

Re: GPS module needed for HAB

Post by deschrijvere » Wed May 04, 2016 8:15 am

Yes I did. No answer :-(

gm
Posts: 203
Joined: Fri May 04, 2007 3:08 pm

Re: GPS module needed for HAB

Post by gm » Wed May 04, 2016 9:22 am

Looks like the Pi-In-The-Sky uses a ublox module. Says on the page "approved for altitudes up to 50km".

deschrijvere
Posts: 3
Joined: Sun May 01, 2016 11:26 am

Re: GPS module needed for HAB

Post by deschrijvere » Sat May 07, 2016 8:21 am

That sounds great.... except datasheet of the GP635T said the same thing :-( I would therefore much prefer to use a unit that someone has flown and knows from experience will work...

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