If you’re familiar with using a compass (the tool that points to magnetic north, not the one that makes circles) the concept of holding the device level makes sense. It must be level for the … ...

Posted in gps hacks, Misc Hacks Tagged arduino, beep, digital compass, enclosure, enclosure design, game, gps, interference, led, magnetometer, navigation, piezo ...

To do that, Eric made use of a digital compass, twelve vibrating pager motors and, of course, an Arduino, all of which got brought together in belt form.