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2pcs Ultrasonic Sensor Module HC-SR04 for Arduino, Distance Sensors with 2pcs Mounting Bracket Compatible with Mega2560, Robot kit, for ZigBee (2)

4.7 4.7 out of 5 stars 445 ratings
#1 Best Seller in Ultrasonic Proximity Sensors
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Purchase options and add-ons

Gauge 10.00
Number Of Contacts 1
Brand Smraza
Voltage 5 Volts
Product Dimensions 1.3"W x 0.1"H

About this item

  • The detection zone: 0.78~196 in/ (2cm~500cm); High precision: up to 0.12 in/(0.3 cm) Effectual angle: less than 15°
  • Test mode :Using IO trigger for high level signal.( Not less that 10us),The Module sends eight 40 kHz automatically and detect whether there is a pulse signal back.
  • Power supply: 5V DC; Quiescent current: less than 2mA.
  • Test distance = ((Duration of high level)*(Sonic :340m/s))/2
  • Package included: 2pcs HC-SR04+ 2pcs Mounting Bracket(support HC-SR04 only)

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ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Rib
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Product details

  • Product Dimensions ‏ : ‎ 4.92 x 3.35 x 1.73 inches; 1.76 ounces
  • Date First Available ‏ : ‎ May 17, 2023
  • Manufacturer ‏ : ‎ Smraza
  • ASIN ‏ : ‎ B0C5JJV53K
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.7 4.7 out of 5 stars 445 ratings

Product Description

If you need more information, please contact us via email to get support.

Parameters:
1. Use voltage: DC5V
2. Quiescent current: less than 2mA
3. level output: high 5V low 0V
5. Induction angle: no more than 15 degrees
6. Detection range: 0.78~196 in/ (2cm~500cm)
7. High accuracy: up to 0.12 in/(0.3 cm)
8. Connection mode: VCC, trig (control), echo (receiving end), GND ground wire

Module working principle:
Pull the Trig pin to high level for more than 10us impulse, the module start ranging.
The module automatically sends eight 40KHz square wave to detect whether a signal is returned.
Finished ranging, If you find an object in front, Echo pin will be high level, and based on the different distance, it will take the different duration of high level.
So we can calculated the distance easily.The distance = ((Duration of high level)*(Sonic :340m/s))/2
Dimensions: 1.3 x 0.4 x 0.1 inch/3.03 x 1 x 0.25 cm (L*W*H)

Package included:
1) HC-SR04 Distance Sensor x2
2) Cartoon Mounting Bracket(Support HC-SR04 only) x2
3)Male to Female Jumper Wires x10

What's in the box

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    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    445 global ratings

    Customers say

    Customers like the performance, quality and value of the terminal block. They mention that it works well, is reliable and is a very useful little kit. Some appreciate the ease of use, accuracy and value for money.

    AI-generated from the text of customer reviews

    21 customers mention17 positive4 negative

    Customers like the performance of the terminal block. They say it works well, it works great with an ESP32, and the sensor works great. Some say the brackets work better than some of the cobbled together mounts they've seen.

    "The brackets work much better than some of the cobbled together mounts I've seen...." Read more

    "...the trigger pin and then use pulseIn to read the Echo pin, the sensor works great. Leaving seller feedback to look at the files provided." Read more

    "I used this for a hobby raceway for object detection. They work perfectly. Great value and it comes with enough extras for future projects. I am happy" Read more

    "They work well. My complaint is that they only include two brackets for four sensors." Read more

    9 customers mention9 positive0 negative

    Customers are satisfied with the quality of the terminal block. They mention it's a great product for projects, reliable, and useful. Some say it'll be an excellent item for STEM examples and hobby and experimentation.

    "...They were pretty decently reliable for that use." Read more

    "great product, everyone workWill order more for the classroom, excellent item for STEM examplesThank You!" Read more

    "All arrived in great shape and all work. What more can you ask for." Read more

    "Great product for projects" Read more

    9 customers mention9 positive0 negative

    Customers appreciate the value of the terminal block. They say it's economical for hobby and experimentation.

    "...But +/- an inch over several feet is good for the price." Read more

    "...They work perfectly. Great value and it comes with enough extras for future projects. I am happy" Read more

    "Works as described, not bad for such a low cost." Read more

    "These are very economical for hobby and experimentation...." Read more

    5 customers mention5 positive0 negative

    Customers find the terminal block easy to use. They mention that the programming is straight forward, and the replacement is super simple.

    "Easy to use, accuracy was good, connection is easy and the plastic holders are useful." Read more

    "...less than 2.50/sensor it's pretty reasonable accuracy, and pretty easy code for Arduino. If you want mm accuracy this will not cut it...." Read more

    "...The programming for them was straight forward and easy to figure out...." Read more

    "...The replacement was super-simple - and I have 4 more if and when this might fail.Now everything is working as well as new! Very Happy Me" Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the accuracy of the terminal block. They mention that it has reasonable accuracy and is accurate enough for hobbyists and those tinkering with arduino and raspberry.

    "Easy to use, accuracy was good, connection is easy and the plastic holders are useful." Read more

    "Eh, for less than 2.50/sensor it's pretty reasonable accuracy, and pretty easy code for Arduino. If you want mm accuracy this will not cut it...." Read more

    "...IMHO they are accurate enough for hobbyist and those tinkering with arduino/raspberry pi platforms...." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the sensor. They mention that it's great for distance finding projects and autonomous vehicles, and the readings are reliable.

    "...But, once I mounted the sensors without the brackets, the readings were reliable again...." Read more

    "The sensor was really good. I wish it had much more range which would have really helped me. Till now works really well in my DIYs. easy to operate...." Read more

    "Great sensors for any distance finding projects or to make autonomous vehicle. Always a lot of fun." Read more

    Accurate and easy to set up with NewPing library
    5 Stars
    Accurate and easy to set up with NewPing library
    I was looking for some sensors to detect feet on stairs and stumbled on these for a discount to review. Good deal for me. I've attached pictures and a video of them in use. It looked like they were all pretty accurate. I tested 4 of the 5 together, as the breadboard didn't fit all 5.They seem to be well made and in anti-static bags for shipping. The two adapters will be nice if I have a use for them. They were incredibly easy to set up. I used the "NewPing" library and was up and running in a few seconds.If you're wondering about the display: 1638
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    Top reviews from the United States

    slomobile
    5.0 out of 5 stars very useful little kit
    Reviewed in the United States on December 28, 2023
    Number of Items: 5Verified Purchase
    The brackets work much better than some of the cobbled together mounts I've seen. Keeping the sensor in a fixed position is key to repeatable performance.
    Helpful
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    Edward J Hall
    5.0 out of 5 stars Good value
    Reviewed in the United States on September 8, 2022
    Number of Items: 5Verified Purchase
    Easy to use, accuracy was good, connection is easy and the plastic holders are useful.
    One person found this helpful
    Helpful
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    Harry T
    5.0 out of 5 stars Works well
    Reviewed in the United States on March 5, 2023
    Number of Items: 5Verified Purchase
    Bought for my train layout to sense trains on tracks approaching to light cross buck signals
    Helpful
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    Michigan Family
    4.0 out of 5 stars Sensor great value - library and sample code not working
    Reviewed in the United States on October 6, 2022
    Number of Items: 5Verified Purchase
    Used the link to download the library and all files. The examples came back with 1kb file length and empty sketches. When including the library and defining an ultrasonic sensor, the ranging() method returns a constant value. If you lookup sample code for an ultrasonic sensor, bypass the library and use digital writes to pulse the trigger pin and then use pulseIn to read the Echo pin, the sensor works great. Leaving seller feedback to look at the files provided.
    2 people found this helpful
    Helpful
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    Bob and Karen
    5.0 out of 5 stars Very well made and very well worth the money
    Reviewed in the United States on September 9, 2020
    Number of Items: 5Verified Purchase
    I needed these to sense the level of my rain water tanks and they worked well enough to give me an accurate enough water level.
    Helpful
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    Just A Geek
    5.0 out of 5 stars +/- an inch from a couple inches to across the room. Good enough
    Reviewed in the United States on March 20, 2020
    Number of Items: 5Verified Purchase
    Eh, for less than 2.50/sensor it's pretty reasonable accuracy, and pretty easy code for Arduino. If you want mm accuracy this will not cut it. But +/- an inch over several feet is good for the price.
    Helpful
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    David A.
    5.0 out of 5 stars Does what you need
    Reviewed in the United States on December 3, 2021
    Number of Items: 5Verified Purchase
    I used this for a hobby raceway for object detection. They work perfectly. Great value and it comes with enough extras for future projects. I am happy
    One person found this helpful
    Helpful
     Report
    Kindle Customer 1234
    3.0 out of 5 stars Not suitable for 'soft' targets.
    Reviewed in the United States on February 19, 2021
    Number of Items: 5Verified Purchase
    Originally got these for an interactive light sculpture that would change depending on how close the viewer was to it. Sadly it didn't work at all when I wore a sweater or other sound absorbant clothing. It was accurate to a few centimeters telling how far sculpture was from a perpendicular flat wall, which is the expected use. Sadly walls are not my intended target audience, so going to have to try something else.
    5 people found this helpful
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    Top reviews from other countries

    Translate all reviews to English
    geordie
    5.0 out of 5 stars Quailty
    Reviewed in the United Kingdom on March 9, 2019
    Number of Items: 5Verified Purchase
    Excellent products
    Report
    Javier
    5.0 out of 5 stars Funcionan con un ESP8266
    Reviewed in Spain on June 5, 2018
    Number of Items: 5Verified Purchase
    Los he usado con un ESP8266 (WEMOS D1) y funcionan correctamente, para conectarlos hay muchos esquemas de como hacerlo en google.
    Report
    Riccardo Z.
    5.0 out of 5 stars perfetto!
    Reviewed in Italy on July 6, 2017
    Number of Items: 5Verified Purchase
    Arrivati esattamente come da foto!
    i supporti sono in plastica (non in cartone :D) bisogna avere un po di delicatezza per inserire correttamente il circuito sul supporto.
    Confezionati singolarmente in bustine richiudibili, a sua volte contentenute in un robusto box in cartone. il tutto chiuso dento il classico cartone C1 di Amazon.
    10 stelle per la cura del confezionamento, nessun piedino storto!
    A breve ne uso un paio e vi faccio sapere!
    One person found this helpful
     Report
    Amazon Customer
    5.0 out of 5 stars Très satisfait
    Reviewed in France on April 27, 2017
    Number of Items: 5Verified Purchase
    Les capteurs ultrasoniques sont arrivés en très bon état et fonctionnent impeccablement. Client 100% satisfait. Produit tout à fait recommandable.
    Report
    Minol
    4.0 out of 5 stars Bien
    Reviewed in Spain on November 11, 2019
    Number of Items: 5Verified Purchase
    Todo correcto, pero los tornillos son tan cortos que llevar y no traer tornillos sería lo mismo.
    Report