[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.

With the Proximity Sensor Alert in your inventory ... so searching for it isn’t as simple as going straight to a beacon in your map. When you get close to your objective, the Sensor will ...

The iPhone's proximity sensor is one of its handier built-in features. When you raise your iPhone to your ear, its screen will automatically go dark due to the feature, saving battery and making ...