[stok] built this GPS receiver from the ground up. The GPS module he got off of eBay dumps NMEA 0183 data. He combined that with an old Nokia LCD and a PIC microcontroller. I like this project because ...
[superlopez] sent in this detailed article (mirrored here and here) which describes how to build a GPS and GLONASS (the Russian version of GPS) receiver. The resulting device is gigantic compared to ...