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Geobox 1.0 (Reverse Geocache)

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Published on Aug 2, 2012

This setup unlocks (using the servo) a wooden box when the GPS is within an unknown radius of unknown coordinates (both specified on the micro-SD card which is concealed from the user). The user only sees the range (in NM) on the 7-segment display (or hyphens when there is no GPS fix), a fix indicator LED, and an "unlocked" indicator LED. When open, the box reveals the RGB LCD display with an intuitive menu dialog and (when there's a GPS fix) current location/range information. The menu is used to change the radius and the coordinates specified on the micro-SD card, and a momentary door switch prevents the servo from locking until a few seconds after the box has been closed.

Adafruit Ultimate GPS Breakout: https://www.adafruit.com/products/746
Adafruit MicroSD card breakout board+: http://www.adafruit.com/products/254
Adafruit RGB LCD Shield Kit w/ 16x2 Character Display: http://www.adafruit.com/products/714
Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack: http://www.adafruit.com/products/878

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