Meet the Crazyflie 2.0: a development platform that weighs 27g and fits in the palm of your hand. It ships in a solderless kit, so you can assemble it to start flying fast. The Crazyflie 2.0 can be controlled from a Bluetooth enabled mobile device. It features a 2×10 pin expansion port and is designed with developers in mind.
The Crazyflie 2.0 is compatible with iOS and Android devices. It measures 92x92x29mm. This educational kit is available for $180 at this time.