How small quadrocopter can be?

Arnaud Taffanel, Tobias Antonsson, and Marcus Eliasson have been working on amazing project – a miniature quadrocopter. Its size is as small as 8 cm and weights 20 grams. It uses a PCB as main frame and place for solid electronics like ARM Cortex -M3, couple gyros, 3 axis accelerometer and 2.4GHz radio module. Quadrocopter is powered with 110mAh LiPo battery that came from RC plane. This gives about 4.5 min flight time. Continue reading