This project provides a simple circuit to detect the presence of a nearby activated phone when the signals are detected. The circuit has the ability to detect signals using the Schottky diode which, ...

This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED. The device must be placed a few ...

Nokia software program analyzes radio waves to calculate the distance to the lightning and inform phone users of imminent strikes If you thought developers were running out of new applications to ...