DIY GPS Geotagging?

Does anyone have more information on building something like this? I was thinking about doing this for my Nikon D5100.

http://cyrozap.com/2011/08/13/diy-nikon-d5100-gps/

as linked to in the article, here: Nikon D90 Homemade GPS

and here: GPS receiver pinouts | Flickr - Photo Sharing!

Just combine the two

btw, there is a cheaper alternative available:
Amazon.com: Opteka GPN-1 Geotag GPS & Shutter Release Cord for Nikon D3X, D3S, D3, D700, D300s, D300, D2x, D2XS, D2HS, D200, D90, D7000, D5000, D5100, & D3100 Digital SLR Cameras: Camera & Photo

I built my own using a Mestro A1035-H GPS module and a cable from a remote shutter release. The module was $20 from Mouser Electronics and the shutter release was about $5. I also bought a super small case for about $2 that sits on my hotshoe. If I did it again I might buy one from Amazon.com for about $40. If you want the parts list let me know. Here is short video of mine.

Nikon GPS - YouTube

I had almost the exact same GPS and one issue to be aware of is that the cable connection to the GPS is fragile. The GPS worked very well. At $40 it is a heck of a deal.

Hah! That's pretty awesome.

I spent quite a bit more with my solution but it's wireless . Got a QStarz bluetooth GPS data logger and a Bluetooth adapter for my D7000, both from Amazon. It cost around $135, but it's wireless and much cheaper than the Nikon solution which is wired. I also like that I don't need to wait on a GPS lock since the GPS logger can work for days on a single charge so I can keep it on for an entire day, always locked on so as soon as the meter turns on on the camera, the BT adapter connects to the GPS logger and it's ready for action!

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silverthornne said:

I spent quite a bit more with my solution but it's wireless . Got a QStarz bluetooth GPS data logger and a Bluetooth adapter for my D7000, both from Amazon. It cost around $135, but it's wireless and much cheaper than the Nikon solution which is wired. I also like that I don't need to wait on a GPS lock since the GPS logger can work for days on a single charge so I can keep it on for an entire day, always locked on so as soon as the meter turns on on the camera, the BT adapter connects to the GPS logger and it's ready for action!

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I did something similar with the Aokatec AK-4NII Bluetooth adapter and a Holux M-1000C data logger. I'm very happy with the solution.