littleBits Proximity Sensors (from the Droid Kit)
This product is no longer available.
The proximity sensor Bit senses objects in front of it. It can sense if an object is far or near. Try using it to create your own self-navigating car or a hands-free instrument!
How It Works
The proximity sensor is like a pair of eyes for your circuit. It detects objects by using an infrared beam to sense whats in front of it. As the object gets closer to the proximity sensor more signal will pass to the following bits in the circuit.