INPUT/OUTPUT (INTERACTIVE OBJECT): PROPOSAL

My idea is to make a smart trash can, by using ultrasonic sensor and steering gear to let the trash can detect the garbage and then open the lid automatically. Garbage disposal has always been one of the problems that plague human development. When I walk on the street, I often find that some garbage is not thrown into the trash can, but is discarded in some public places. I hope my work can remind people to put rubbish in the trash can and protect the environment together.