Developer Comment by Randy on July 4, 2012 at 2:25am

Tridge did some work to make it so the APM will automatically configure the gps to use the right settings at start-up.  Hopefully that'll make it nice and easy for people to get working.  We shall see when they start arriving in people's mailboxes I guess.

Moderator Comment by Roberto Navoni on July 4, 2012 at 2:51am

I try this module using Mikrokopter GPS module that mount same GPS and try Fastrack U501 thatn use MTK 3329 . My impression is that is better MTK 3329 in reacquisition and also the quality of position is similar.

So could be interesting doing a comparative test .

I don't check the 3DR module with MTK 3329 , but i know that don't use backup battery that could be the main problem that you have on 3329.

Best Roberto

Comment by Koen Pauwels on July 4, 2012 at 3:32am

Hi Sam, is it also completely compatible with the APM1? 

What is the refresh rate? > 10Hz?

Thx  Koen

Developer Comment by Adam Rivera on July 4, 2012 at 5:55am

@Chris: Yes...the APM2 with the built in GPS

3D Robotics Comment by Chris Anderson on July 4, 2012 at 8:34am

Koen: yes, it's 100% compatible with APM1. 5hz update rate.

Comment by Jonathan M on July 4, 2012 at 12:47pm

This is the same GPS unit that the new Autoquad AP is using with great results.  Granted, they have a bit more processing power than us, but hopefully, it brings the APMs to a new level.  Can't wait to see people's results :)

Comment by Martin Mueller on July 4, 2012 at 2:58pm

Are those special version 10Hz receivers? The u-blox data sheet (page 6)

http://www.ublox.com/images/downloads/Product_Docs/LEA-6_DataSheet_...

talks about 2Hz for the flash (e.g. LEA-6H) or 5Hz for the ROM (e.g. LEA-6S) version. As far as I understood that is the reason why Mikrokopter uses the ROM version.

https://www.mikrocontroller.com/index.php?main_page=product_info&am...

Comment by Pbreed on July 4, 2012 at 3:22pm

Several questions...

1)Where can I find the firmware/ interfacing info for this version?

2)Looking at the schematic It looks like 5V is not used anywhere on the board, how much headroom does the regulator have to go over 5V? All of my recent systems have 2S lipo and 3.3V, but no 5V, 

3)Teh ublox says the -H version is just 2Hz, can you confirm that this is a -H version AND that it is better than 2Hz?

3D Robotics Comment by Sam Kelly on July 4, 2012 at 5:18pm

Martin, I believe the data sheet is outdated, as our 6H modules are configured for 4Hz update rate, and can do 5Hz maximum. See here: http://www.u-blox.com/lea-6h.html

3D Robotics Comment by Chris Anderson on July 4, 2012 at 5:19pm

Pbreed: the refresh rate is up to 5Hz. We run them at 4Hz in the ArduCopter/Plane code. 

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