The Learning Circuit 85: How Do Ultrasonic Distance Sensors Work?

How Do Ultrasonic Distance Sensors Work?

The Learning Circuit | element14 presents | Project Videos

In this video, Karen talks about ultrasonic distance sensors. These sensors use high frequency sound, above human hearing, to detect objects within their range. Unlike other no-touch sensors, they can not only detect if there is an object within range, but also how far away that object is. Check out the video to watch Karen explain more about how these sensors work.

Supplemental Content

The Learning Circuit 46: Introducing Microphones and Speakers
The Learning Circuit 79: How Accelerometers Work
Arduino Nano bot - using ultrasonic sensor by carmelito
SoundFi - Transmitting Data Using Sound (Ultrasonic Sound) by vimarsh_
PSoC ultrasonic range meter by koudelad
The specified item was not found. by Sean_Miller
1DUltraBot #3 : Finished (and working!) by dubbie

Top Comments

colporteur over 1 year ago +3

Awesome Karen!

You were not even born, when I begged a ultrasonic pizoelectric transducers off of a manufacture to write a thesis project paper some 40 years ago. I begged because the cost of the device…
jc2048 over 1 year ago in reply to DAB +2

The speed of sound in mathematical notation is conventionally represented by c, from the Latin celeritas meaning "velocity".

https://en.wikipedia.org/wiki/Speed_of_sound
beacon_dave over 1 year ago in reply to DAB +2

"...So I do not know where wikipedia came up with that notation..."

Oxford Dictionary of Physics perhaps ?

https://www.oxfordreference.com/view/10.1093/acref/9780198821472.001.0001/acref-9780198821472…

Parents

miles90 over 1 year ago

Hi Karen,

Very interesting topic as always, thank you very much. I won’t miss the next project.
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miles90 over 1 year ago

Hi Karen,

Very interesting topic as always, thank you very much. I won’t miss the next project.
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