While a well-known use of this is sonar, ... A motor rotates it around a 180-degree field-of-view and an Arduino takes and records measurements during its trip.

He spun up an Arduino shield using this chip, and wrote the necessary code to interface directly with a commercial transducer. This is already a huge milestone for DIY sonar, but [Neumi] isn’t ...

After finding a ready-made sonar distance sensor online, they wondered if they could use it to help the visually impaired navigate their environment more easily. They settled on a wearable, watch ...