[IEEE 2017 IEEE 9th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management (HNICEM ) - Manila, Philippines (2017.12.1-2017.12.3)] 2017IEEE 9th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM) - Quadrotor system for gathering discomfort index and amount of air pollutants