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Re: [Paparazzi-devel] New GPS recommendation

From: Jake Tarren
Subject: Re: [Paparazzi-devel] New GPS recommendation
Date: Tue, 3 Sep 2013 15:13:26 -0400

Sorry, I miss read that, you're saying I should get the NEO-7 either on a breakout board with an EEPROM chip, or just a standard breakout board and use gps_ubx_ucenter.xml to push the config to it each time it boots up?  Does this affect the required time between powering up the paparazzi module, and flying at all?

On Tue, Sep 3, 2013 at 2:42 PM, Jake Tarren <address@hidden> wrote:

So you're saying I should add an EEPROM chip or use gps_ubx_ucenter.xml with the MAX-7 to get the faster poll rate of 5Hz?


On Tue, Sep 3, 2013 at 5:15 PM, Martin Mueller <address@hidden> wrote:
Hi Jake,

> > That one looks good, but do you know why it's so cheap compared to the
> > others?

probably those receivers just are that cheap today. The slightly more luxurious
"Made in France" version at Drotek costs 35 Euros.

The NEOs are a little cheaper than the bigger LEA receiver modules as they only
have a ROM and no flash memory. That means that you can not update the software
and an extra EEPROM is needed to store configuration data (the HK/Drotek boards
do have the EEPROM, or you use gps_ubx_ucenter.xml). On the other side the data
sheet guarantees you a 5Hz position update rate with a ROM-based receiver (and
not only 2Hz as the LEAs).

> Is there any support for the uBlox LEA-7N module?  It looks to be superior
> to the 6H

Some Lisa/S samples use a u-blox MAX-7 receiver. In the past new generation
u-blox receivers were 1:1 replacements, maybe you have to look in the u-blox
center if there are some binary configuration messages changed.

> After doing more reserch into uBLOX, it seems like the module best suited
> for my needs is the MAX-7.  Does anyone know what the support is like for
> them?

The modules should be compatible. Be careful with the simple dipole antenna.


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