[armaguy]

Hello,

I'm trying to make a DIY GPS tracker for my digital camera, it's a D90 from Nikon. The D90 has a seperate GPS receiver available for way too much buck that will capture and send the coordinates to the camera throught a clear text protocol named NMEA.

I was wondering if any programmer ever had success or experienced sending data (anything) from the iPhone USB port.

My goal is to take the info from the iPhone (3G) internal GPS receiver which is quite excellent and send it using the NMEA protocol using a customized USB wire. The D90 has a special proprietary port for this, 4 pins, 2 is for power 2 other for info.

This is my part, making the dock wire fits into the 4 pin of my camra. However I have no knowledge whatsoever on programming and how to make this happen by software. Any help would be appreciated!

By the way if this works it coulf fit way more camera that just a D90, I'm just using it because that's what I own.

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I considered tracking GPX info and geotag after and whatever program I used it was painful. On the go geotag would just be sweet.