If you have one ultrasonic sensor and a microcontroller, you can detect plenty of useful things, like the water level in a rain barrel or the distance traveled by a tablet along a rail.

[Emil] got his hands on a dozen HC-SR04 ultrasonic sensors, but wasn’t too happy with their performance. Rather than give up, he reverse engineered the sensor and built an improved version ...

A new category of sensing technology transforms mobile robot vision from 2D to 3D, improves safety performance and provides 50-80% cost savings compared to traditional, LiDAR- ...

We propose the development of three ultrasonic measurement systems integrated into a compact package suitable for robotic deployment. The first two sensor systems will measure flow on a large-scale ...

Tesla has received type approval for the Model S and Model X with Hardware 4, but the ultrasonic sensors are nowhere in sight ...

Tesla surprised many people last year when it announced that, from now on, ultrasonic sensors would be deprecated, and new cars would be delivered without them.