Agile Little Crazyflie Nano Quadcopter Weighs Just 19 Grams
Crazyflie is an impressive little 19 gram quadcopter. It features a 2.4 GHz radio chip from Nordic Semiconductors. The Crazyflie open source nano quadcopter kit costs $149 can be be found on Seeed Studio. It ships in late April.
Here is a video from Bitcraze that shows what Crazyflie is capable of and the buzzing noise it makes. Crazyflie can ascend vertically very quickly. It also remains fairly stable in flight even when threatened by the wind from a fan. Take a look: