littleBits Individual Bits - Motion trigger
Price in Singapore Dollars, including 7% GST of $2.62
With this Bit, you can control your circuits with motion. The motion trigger is similar to the sensor on an automatic door: when someone is moving nearby, it sends an ON signal to the following Bits. It's very sensitive, so don't move a muscle unless you want to be detected! Try it with some LEDs to create a security light.