A reverse geocache – a box that only opens in a certain geographical area – is a perennial preferred right here at Hackaday. We see a ton of different implementations, however a lot of of the time, the develops are fairly similar. Of program dedicating a GPS receiver solely to a reverse geocache isn’t an low-cost prospect, so [Eric] came up with a much better solution. He’s utilizing a wise phone as the brains of his geocache, enabling him to keep the GPS as well as screen outside the locked box.
The develop began by discovering an old box as well as modifying it so it can be locked with a servo. The only other bits of electronics inside the box are an IOIO board, a battery pack, as well as an I2C EEPROM for storing a few settings. On the phone side of things, [Eric] composed an Android app to serve as both the programming interface, UI, as well as GPS hardware for his reverse geocache. It’s precisely like all the other reverse geocaches we’ve seen, only this time around the controls are wireless.
[Eric] put up a video demoing his reverse geocache. You can inspect that out after the break.