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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“Nothing wrong wrong with it so far. Works as assumed.”

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Posted 8 years ago

“Item was delivered on time as mentioned during the purchase. Thank you for good custom.”

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Posted 8 years ago

“As described. Good quality, sound price, if you'll pardon the pun. Quick delivery. All as per usual.”

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Posted 9 years ago

“Tested the sensor with an arduino nano. Wiring was done within seconds, accuracy is good for this price.”

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Posted 9 years ago

“The use of that sensor is not as easy as many other when you want to use it with the Pi. From the electronic point of view, you need to set a voltage divisor (two resistances of specific value, one twice the resistance of the other)... I solved that issue by using 3 resistors of the same value and remembering that two in serial will make R=R1+R2. From the software point of view, this is time sensitive to mesure the distance... I solved that issue by using GPIOZero Python Library (starting from version 1.2) it is transparent and all the complexity is abstracted. From the hardware point of view, you might want something to attach that on your robot... but it fit well on a breadboard. All in all, more challenging than an LED of a HAT, but so much rewards in learning and your robot (or alarm) need it.”

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Posted 9 years ago

“Must have when building moving robot.”

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Posted 9 years ago

“Bought this for a robot Pi to stop it bumping into the wall. Have tested it on a breadboard and works fine. Quick delivery as well”