This Arduino Project performs distance and location tracking of a remote tag. As it uses radio signals it can be used indoors where GPS solutions would fail.

It uses a Loc8tor Lite device to do the distance and location measurement; it has two stepper motors controlled by the Adafruit motor shield, to move the device in 3 dimensions and displays results on a Liquid Crystal Display.

The project also includes a 'port extender': this uses a shift register to convert 3 ports on the Arduino into 8 logical ports; a modification of the Liquid Crystal library is required, which replaces the digitalWrite() call with my own version.

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