[AJ] and [Brian] are making sure the geocache challenges they set up take some ingenuity to solve. They’ve just rolled out a two-part cache which uses a code hidden in infrared light. (Editor’s note ...
The GeoCache Box is based on a PIC18F2520 microcontroller that is interfaced to GPS receiver, LCD, and lock as the box opens when it is located on predefined coordinates. The GeoCache Box is based on ...
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