(Shown at left above, with a Locosys LS20033 GPS module for size comparison)
ArduPilot is designed to use the solid and reliable EM406 GPS module, which is a 5v, 1Hz device that works well under most conditions. But if you want more precise navigation, you may want to upgrade to the 5Hz Locosys module that Dean Goedde is using with AttoPilot. That's a 3.3v module, so you can't just plug it into the ArduPilot board. Instead, Jordi has designed a special daughterboard that does the following:
--Converts ArduPilot's 5v power to 3.3v power
--Provides a EM406 connector, so it's a direct plug-in replacement for the EM406
--Provides a break-out connector so you can add a wireless modem, such as a Zigbee.
--Power LED
We may release this as a pre-made product, but in the meantime you can make your own.
Buy the board from BatchPCB here.
Components:
Eagle files (schematic and PCB) are here.
Comments
As it happend I will be testing what i believe is the exact same GPS as soon as i recieve my Ardupilot.
Some time ago, Dean Goedde maker of the Attopilot compared the LS20033 (a very similar gps as to what you are planning to use) to the LS20033 (the one this daughterboard was designed for)
I quote:
"I have EXTENSIVE testing of the 5Hz MediaTek LS20033 and LS20031 in AttoPilot... The larger LS20031 outperforms the smaller antenna version (LS20033) hands down in controlled experiments for solidity of GPS lock and retention of lock in steep banking turns (45+ degrees)"
That being said, the GPS you describe(or very similar) is used in many OSD's by FPV guys and they pretty happy.
Hope this helps.
Nick
http://www.gtop-tech.com/download/datasheet/FGPMMOPA6-datasheet.pdf
Best regards
Michal
So what I think of doing is to solder a cable from ground pin in HV to groundpin LV and then one resitor from there to vcc(200k??) LV and a resistor from vcc in HV to LV(300k??)
Shouldn't that work just fine then?
How did u make those nice plots in google earth? What about make an interface with googlemaps/google earth where u can just click on the map to set the waypoints and then transfer them to the ardupilot?