Customer Reviews

4.91 out of 5
See all 265 reviews
Write a Review
  • All Reviews (265)
  • Image (30)
  • Video (0)
  • All Star
    • All Star(265)
    • 5 Star(252)
    • 4 Star(8)
    • 3 Star(2)
    • 2 Star(0)
    • 1 Star(3)
Sort by:
Top Review
  • Top Review
  • Most Helpful
  • Most Recent
Reviews only from your country (United States)
|
Show Original

A part of the review has been auto-translated.

  • 24/03/2021

    very nice. Good item and fast delivery. I ordered it on the 19th of March and it came on the 24th of March. Will order again if I use these for any permanent projects.

    Comments
    Show Original
  • 27/07/2020

    They seem very good in quality, haven't tested yet, the best I've received in 20 days in Rondônia, Bangoog is the best in delivery quality....

    Comments
    Show Original
  • 15/12/2021

    They arrived fast and in good condition. I tested just one of them so far but works as expected. Easy to install and easy and to use it.

    Comments
    Show Original
  • 30/07/2020

    All the pins are looking perfect and not bent!!! That’s great and I’ve tested the components, they work!!!

    Comments
    Show Original
  • 21/11/2019

    The HC-SR04 sensor has 4 pins: Vcc (+ 5V), Trigger, Echo, GND. It sends a high pulse on the Trigger pin for at least 10 microseconds, at this point the sensor will send the sound ping and wait for the return of the reflected waves, the sensor will respond on the Echo pin with a high pulse of the duration corresponding to the travel of sound waves , after 38 milliseconds it is considered that no obstacle has been encountered. For safety we generally expect 50-60 millisecs to ensure that there is no interference with the next measurement.

    Comments
    Show Original
  • 17/09/2022

    Product came well packaged, perfect. Would recommend purchasing.

    Comments
    Show Original
  • 30/03/2022

    Items came in time,no damaged modules. This batch I have not connected to power supply but since I've been ordered it before for my friend and everything works just fine.

    Comments
    Show Original
  • 18/04/2020

    Cheap and very useful for DIY robots.

    Comments
    Show Original
  • 15/04/2020

    nice

    Comments
    Show Original
  • 11/03/2020

    Fast delivery from UK warehouse. Works as expected. Quality is ok. I recommend.

    Comments
    Show Original
Show:

    Total 0 pages

    Go to page

    Go

    You might be interested in

    recommendation for you
    • US$1.99
    • US$3.99
    • US$11.99
    • US$3.99
    • US$1.99
    • US$2.99
    • US$9.99
    • US$1.40
    • US$1.99
    • US$6.29
    • US$21.99
    • US$1.40
    • US$6.99
    • US$1.99
    • US$0.99
    • US$9.99
    • US$2.99
    • US$17.99