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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 18:42:25 +0000


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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