CrazyFlie Obstacle Avoidance Sensor Deck

Crazyflie is a lightweight micro aerial vehicle; or in simple terms, a mini drone from a company called Bitcraze. This drone platform is widely used among the robotics research community for micro UAVs and swarm robots. It being an open source platform with both the hardware and firmware resources available freely online in GitHub repositories, users are given an opportunity to design a "deck", which is a pluggable expansion board on top of the main drone platform PCB.