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Permalink Reply by Doofer on November 25, 2009 at 1:10pm

Well here's another potential Ardupilot user with an OSD, wondering if I can save 50 quid and plug in my existing GPS output to the Ardupilot board (or shield)?

I see a lot of speculation on this thread, but no-one saying they've got this to work - either with the standard settings, or after hours of fiendish code hacking.

So, a year on, has anyone successfully bought the bits for an Ardupilot setup, and for a GPS just piggybacked in the output at 19200 from an EB85 already plugged into an IFOSD?

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Permalink Reply by Reto on November 25, 2009 at 2:17pm

I was almost, but not excactly in this situation, wanting to use my Inspire OSD with ArduPilot+shield and a single Locosys GPS. The problem I had was that the Inspire OSD needed (for distance and direction to waypoint following) an additional NMEA sentence that the Locosys GPS could not deliver as is. So I tried out some ways to resolve this. My current setup is explained in this post. it's not an out of the box solution, but maybe it gives ideas.

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Permalink Reply by smguest on November 25, 2009 at 8:44pm

I do have the LOCOSYS LS20033 gps working with both the IFOSD and ArduPilot 1.x (using the gps ascii output) just by splitting the data lines. As stated earlier when I was experimenting with an Arduino board, I let the IFOSD power and initialize the gps receiver and just tap into the serial data line and the ground and connect it to the ArduPilot. Since the OSD does all initialization for the GPS, I don't have to send anything from the ArduPilot (just have to remember that the baud rate is 19200). I made it work quite some time ago and although I'm not sure, I think I updated the IFOSD gps initialization string (via the IFOSD setup utility) to make sure that the GPS generated the needed data for the ArduPilot.

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Permalink Reply by Doofer on November 26, 2009 at 8:52am

Great stuff - two GPS sensors on one'plane would look daft.

I'm trying to think of reasons to not jump yet - too many projects on the go!
Only two such issues remain:
1. I have read that a $70 dedicated XYZ sensor will be on the market Dec 2009 - has anyone else heard of this?
2. Not clear why I need a 'shield' board (airspeed... notalot else?) for this; the earlier versions didn't seem to need it?

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