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ELEGOO Ultrasonic Sensor, HC-SR04 Ultrasonic Distance Sensor Kits for Arduino UNO MEGA R3 Raspberry Pi,Datasheet Available to Download

4.5 out of 5 stars 177 ratings
£8.99 with 10 percent savings
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  • Ultrasonic HC-SR04 Distance Measuring Transducer Sensor Compatible with Arduino
  • HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse.
  • Power supply: 5V DC; quiescent current: less than 2mA; effectual angle: less than 15°; distance: 3cm~450cm; resolution: 0.3 cm
  • Package Content: 5pcs HC-SR04 with 10 pcs female to male dupont cable
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Top Brand

ELEGOO

96% positive ratings from 1K+ customers

10K+ recent orders from this brand

Product Safety

This product is subject to specific safety warnings

  • Warning:Not suitable for children under 6 years. For use under adult supervision

  • Warning:To be used under the direct supervision of an adult

Product Information

Technical Details

Manufacturer ‎ELEGOO
Part number ‎UK-EL-SM-001
Item Weight ‎9.07 g
Product Dimensions ‎2.97 x 1.5 x 3 cm; 9.07 g
Item model number ‎UK-EL-SM-001
Voltage ‎5 Volts
Item Package Quantity ‎5
Batteries included? ‎No
Batteries Required? ‎No

Additional Information

ASIN B01M0QL1F1
Customer Reviews
4.5 out of 5 stars 177 ratings

4.5 out of 5 stars
Best Sellers Rank
Date First Available 21 Nov. 2018

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  8. How did we get started?

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    What makes our products unique?

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Product Description

Elegoo HC-SR04 Ultrasonic Sensor is a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. By recording the elapsed time between the sound wave being generated and the sound wave bouncing back, it is possible to calculate the distance between the sonar sensor and the object.

Ultrasonic Sensor HC-SR04 is great for all kind of projects that need distance measurements, avoiding obstacles as examples. HC-SR04 provides 2cm-300cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules include ultrasonic transmitters, receiver and control circuit.

Operatiing Principle of Ultrasonic Sensor

As the name indicates, ultrasonic sensors measure distance by using ultrasonic waves. The sensor head emits an ultrasonic wave and receives the wave reflected back from the target. Ultrasonic Sensors measure the distance to the target by measuring the time between the emission and reception. The distance can be calculated with the following formula: Distance L = 1/2 × T × C where L is the distance, T is the time between the emission and reception, and C is the sonic speed. (The value is multiplied by 1/2 because T is the time for go-and-return distance.)

Ultrasonic Sensor for Project

Elegoo Ultrasonic Sensor HC-SR04 is inexpensive and easy to use since we will be using a Library specifically designed for this sensor, which can be downloaded from elegoo.com.

Technical Specification

  • Power Supply :+5V DC
  • Quiescent Current : <2mA
  • Working Current: 5mA
  • Effectual Angle: <15°
  • Ranging Distance : 2cm - 300 cm/1″ - 13ft
  • Resolution : 0.3 cm
  • Measuring Angle: 30 degree
  • Trigger Input Pulse width: 10uS
  • Dimension: 45mm x 20mm x 15mm

Product Package

  • 5 HC-SR04 Ultrasonic Sensors
  • 10 Female-Male Dupont Cables
  • 10 Female-Female Dupont Cables
  • 1 Exquisite package box
  • Protected with the thermoplastic film

Customer reviews

4.5 out of 5 stars
177 global ratings

Customers say

Customers find the ultrasonic sensor to be well-made and appreciate its functionality, particularly with Raspberry Pi using Python. They consider it excellent value for money. The accuracy receives mixed feedback, with one customer noting it detects between 2cm and 300cm.

Select to learn more

QualityFunctionalityValue for moneyAccuracy
15 customers mention ‘Quality’15 positive0 negative

Customers find the ultrasonic sensor to be well-made, with one customer specifically noting it as a great example of budget ultrasonic sensors.

"Great product but if you are trying to use on a raspberry pi, you will need to buy female to female cables to connect as this item has male to female." Read more

"Excellent product !!!! Works perfectly with my arduino" Read more

"Great little device which arrived very promptly." Read more

"Perfect, have used 3 so far all working great" Read more

11 customers mention ‘Functionality’10 positive1 negative

Customers report that the ultrasonic sensor works well, particularly with Raspberry Pi using Python, and one customer mentions it runs easily on a PI Zero.

"Excellent product !!!! Works perfectly with my arduino" Read more

"Works great" Read more

"Great value and working well in my arduino project to measure height of liquids. 5 stars for value." Read more

"...It's worth noting it works intermittently with 3.3v but will be unreliable." Read more

7 customers mention ‘Value for money’7 positive0 negative

Customers find the ultrasonic sensor to be excellent value for money.

"I think it is good price and quality made." Read more

"Good value for money, especially if you are a 'Prime' member!" Read more

"Great value and working well in my arduino project to measure height of liquids. 5 stars for value." Read more

"Great Value for money, nicely made, so far all three of the units I've wired up have functioned correctly" Read more

3 customers mention ‘Accuracy’2 positive1 negative

Customers have mixed opinions about the accuracy of the ultrasonic sensor, with some finding it great for distance measuring, while others report that the proximity sensing is not precise.

"In the description, it says it detects between 2cm~300cm but won't read above 161cm, so half the distance. Waste of my time" Read more

"It functions well but the proximity sensoring is not precise." Read more

"These sensors are great for distance measuring with many small microcontroller projects...." Read more

Good for specific projects, not for real life obstacles
4 out of 5 stars
Good for specific projects, not for real life obstacles
Using this on my Raspberry Pi 4B robot. I'm getting a LiDAR sensor as this one does not detect some materials at home.
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Top reviews from United Kingdom

Product Summary: ELEGOO Ultrasonic Sensor, HC-SR04 Ultrasonic Distance Sensor Kits for Arduino UNO MEGA R3 Raspberry Pi,Datasheet Available to Download

From ELEGOO

4.5 out of 5 stars, 177 ratings

Customer reviews

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Price

One-time purchase: £9.99

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About this Item

  • Ultrasonic HC-SR04 Distance Measuring Transducer Sensor Compatible with Arduino
  • HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse.
  • Power supply: 5V DC; quiescent current: less than 2mA; effectual angle: less than 15°; distance: 3cm~450cm; resolution: 0.3 cm
  • Package Content: 5pcs HC-SR04 with 10 pcs female to male dupont cable

Product description

Product Introduction The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package. From 2cm to 300 cm or 1” to 13 feet. Its operation is not affected by sunlight or black material like Sharp rangefinders are although acoustically soft materials like cloth can be difficult to detect. HC-SR04 Distance Sensor consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse. Features 》Power Supply :+5V DC 》Quiescent Current : <2mA 》Working Current: 15mA 》Effectual Angle: <15° 》Ranging Distance : 2cm – 300 cm/1″ – 13ft 》Resolution : 0.3 cm 》Measuring Angle: 30 degree 》Trigger Input Pulse width: 10uS 》Dimension: 45mm x 20mm x 15mm Pins 》VCC: +5VDC 》Trig : Trigger (INPUT) 》Echo: Echo (OUTPUT) 》GND: GND Package including: 5 pcs in the Antistatic Resealable Bag Gift : 10pcs female to male dupont cable

Important information

cpsia_subject_specific_additional_warning

Warning: Not suitable for children under 6 years. For use under adult supervision

cpsia_subject_specific_additional_warning

Warning: To be used under the direct supervision of an adult

Toy Safety

  1. Our recommended age:
  2. Manufacturer's minimum age:
  3. not_suitable_under_6_years_supervision

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