Flying robot echolocates like a bat to avoid banging into walls

A simple buzzer and some microphones help a drone to navigate and map out its surroundings, much like how a bat uses sound to see in the dark

Flying robot echolocates like a bat to avoid banging into walls
A simple buzzer and some microphones help a drone to navigate and map out its surroundings, much like how a bat uses sound to see in the dark