Ultrasonic Distance Sensor (HC-SR04) Reviews

4.9 Rating 59 Reviews

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Mann Enterprises LTDHomefield RoadHaverhill, SuffolkCB9 8QP
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“Only 5v and can be a bit hit and miss with distance, but cheap and ok for hobby application”

1 Helpful Report

Posted 3 years ago

“You'll need a couple of resistors to use this with a Raspberry Pi. The GPIO pins require 3.3v but the echo pulse sends 5V. So, you build a voltage divider with some resistors and all works well. Once running, it measures reasonably accurately. I think the biggest source of error is the timing command within the python script. However, for the price, I really can't complain.”

3 Helpful Report

Posted 3 years ago

Author didn't leave any comments.

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Posted 4 years ago

“Mmm”

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Posted 4 years ago

“Neat little sensor for a nice price.”

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Posted 4 years ago

“A simple and useful distance meter. Also very cheap!”

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Posted 5 years ago

“Great product, great value”

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Posted 5 years ago

“Built a theremin from the Projects book. Worked perfectly”

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Posted 5 years ago