Description

HY-SRF05 Ultrasonic Sensor – High Precision 5 Pin Ultrasonic Distance Measuring Module

The HY-SRF05 Ultrasonic Sensor is a high-performance ultrasonic distance sensor designed for accurate, reliable, and non-contact distance measurement in a wide range of electronic and automation applications. Operating at 5V DC with a stable 40kHz ultrasonic frequency, this compact 5 Pin Ultrasonic Sensor provides fast response times, low power consumption, and excellent measurement accuracy, making it an ideal solution for both professional engineers and DIY electronics enthusiasts.

Designed to measure distances from 2cm to 450cm, the HY-SRF05 Ultrasonic Distance Sensor Module offers significantly improved close-range detection compared to many standard ultrasonic modules. Its optimized signal processing and stable echo detection enable precise distance measurement even in demanding environments, making it suitable for robotics, automation equipment, obstacle avoidance systems, intelligent vehicles, industrial control, and embedded development platforms.

Unlike traditional contact-type sensors, the HY-SRF05 Ultrasonic Sensor measures distance using ultrasonic sound waves rather than physical contact. This non-contact measuring method reduces mechanical wear while improving long-term reliability and measurement consistency. The module transmits an ultrasonic pulse at 40kHz, receives the reflected echo from the target object, and calculates the distance based on the travel time of the ultrasonic signal. This simple yet highly effective working principle has made ultrasonic ranging technology one of the most popular distance measurement solutions in modern electronics.

The module features a standard 5-pin interface, including VCC, Trig, Echo, OUT, and GND, allowing seamless integration with popular microcontroller development platforms such as Arduino, Raspberry Pi, STM32, ESP32, AVR, PIC, 8051, and many other embedded control systems. Its straightforward interface simplifies hardware connections while reducing software development complexity, making it an excellent choice for education, prototyping, and commercial product development.

One of the biggest advantages of the HY-SRF05 Ultrasonic Sensor is its outstanding balance between performance and affordability. With a measuring range of 2cm to 450cm, low static current consumption of less than 2mA, and reliable digital output signals, this Ultrasonic Distance Sensor delivers consistent performance for continuous distance monitoring and real-time obstacle detection. Whether used in indoor automation or intelligent robotic systems, the module provides dependable measurement results with minimal maintenance requirements.

The sensor offers a narrow measuring angle of less than 15°, helping reduce interference from surrounding objects while improving target detection accuracy. Combined with its high ranging precision, this makes the Distance Measuring Sensor suitable for applications requiring stable and repeatable measurements, including automatic doors, liquid level monitoring, parking assistance systems, warehouse automation, conveyor systems, security equipment, and unmanned mobile robots.

Built with durable electronic components and high-quality ultrasonic transducers, the HY-SRF05 Ultrasonic Sensor is designed for long-term operation in laboratory environments, educational projects, industrial prototypes, and commercial electronic products. The compact PCB design allows easy installation even in applications where space is limited, while its lightweight construction makes it especially suitable for mobile robotic platforms and autonomous vehicles.

For developers seeking compatibility with open-source ecosystems, the HY-SRF05 Ultrasonic Distance Measuring Module is fully supported by numerous Arduino libraries and programming examples. Engineers can quickly implement distance measurement functions without complex driver development, significantly reducing project development time. The module is equally suitable for beginners learning embedded programming and professionals developing advanced automation systems.

Whether you are designing an intelligent obstacle avoidance robot, an automatic level monitoring system, a smart parking solution, or an IoT-based measurement device, the HY-SRF05 Ultrasonic Sensor provides a dependable, cost-effective, and easy-to-use sensing solution. Its combination of long measuring range, stable performance, high precision, and excellent compatibility has made it one of the most widely used Ultrasonic Ranging Modules in the global electronics market.

Engineered for accuracy, reliability, and ease of integration, the HY-SRF05 Ultrasonic Sensor continues to be a preferred choice for developers, educators, system integrators, and manufacturers looking for a proven Ultrasonic Distance Sensor capable of delivering consistent performance across a wide variety of electronic and industrial applications.

Product Features

Key Features

High-Precision Distance Measurement

The HY-SRF05 Ultrasonic Sensor delivers accurate non-contact distance measurement from 2cm to 450cm, making it suitable for applications requiring reliable short- and medium-range object detection. Compared with conventional ultrasonic modules, it offers improved close-range performance and stable measurement results.

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Stable 40kHz Ultrasonic Technology

Operating at a 40kHz ultrasonic frequency, the sensor provides fast signal transmission and reliable echo reception for consistent ranging performance. This frequency offers an excellent balance between measuring accuracy, response speed, and environmental adaptability.

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Standard 5V Operating Voltage

Powered by a standard DC 5V supply, the module is compatible with most embedded development platforms and microcontroller systems without requiring additional voltage conversion circuitry.

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Easy 5-Pin Interface

The module features a convenient 5-pin interface (VCC, Trig, Echo, OUT, GND) for simple wiring and quick integration into various electronic projects. Developers can easily connect the sensor to Arduino, Raspberry Pi, STM32, ESP32, AVR, PIC, and other popular controllers.

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Low Power Consumption

With a static current consumption of less than 2mA, the HY-SRF05 Ultrasonic Sensor is ideal for battery-powered devices, portable electronics, IoT products, and energy-efficient embedded systems.

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Narrow Detection Angle

A sensing angle of less than 15° minimizes interference from surrounding objects and improves measurement stability, making the sensor suitable for precision positioning and obstacle detection.

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High Compatibility

The module supports a wide range of development environments and programming platforms, making it suitable for educational projects, prototype development, commercial products, and industrial automation systems.

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Reliable Digital Output

The sensor generates stable digital trigger and echo signals that simplify software development while improving measurement consistency in real-time applications.

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Technical Specifications

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Pin Configuration

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Working Principle

The HY-SRF05 Ultrasonic Sensor measures distance using the time-of-flight (ToF) principle.

1. The controller sends a trigger pulse of at least 10μs to the Trig pin.
2. The module automatically transmits an 8-cycle 40kHz ultrasonic burst.
3. When the ultrasonic wave reflects from an object, the sensor receives the returning echo.
4. The Echo pin outputs a pulse whose duration is proportional to the travel time of the ultrasonic wave.
5. The controller calculates the distance using the following formula:

Distance = (Echo Time × Speed of Sound) ÷ 2

Since the sound wave travels to the object and then returns, the measured time is divided by two to obtain the actual distance.

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⭐ Product Advantages

• High measurement accuracy up to ±0.3cm
• Wide detection range from 2cm to 450cm
• Stable 40kHz ultrasonic operation
• Low power consumption for energy-efficient designs
• Excellent compatibility with popular development boards
• Reliable digital signal output
• Compact PCB design for easy installation
• Cost-effective solution for commercial and educational applications
• Suitable for continuous real-time distance monitoring
• Long service life with stable performance

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Typical Applications

The HY-SRF05 Ultrasonic Sensor is widely used in various electronic, industrial, educational, and automation applications, including:

• Smart Robot Obstacle Avoidance
• Autonomous Mobile Robots (AMR)
• Arduino Development Projects
• Raspberry Pi Projects
• STM32 Embedded Systems
• ESP32 IoT Devices
• Automatic Parking Systems
• Water Level Monitoring
• Tank Level Measurement
• Smart Trash Bin Systems
• Automatic Door Control
• Industrial Automation Equipment
• Distance Measuring Instruments
• Warehouse Automation
• Conveyor Detection Systems
• Intelligent Agricultural Equipment
• Security Alarm Systems
• Smart Home Automation
• Educational STEM Projects
• DIY Electronics Development

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Package Includes

Standard Package

• 1 × HY-SRF05 Ultrasonic Sensor Module

Optional Services

• Bulk Packaging
• OEM Logo Printing
• Customized Label
• Anti-static Packaging
• Export Carton Packaging

Why Choose Our HY-SRF05 Ultrasonic Sensor?

✔ Stable 2cm–450cm measuring range

✔ High precision up to ±0.3cm

✔ Reliable 40kHz ultrasonic technology

✔ Standard 5V operating voltage

✔ Low standby current (<2mA)

✔ Easy integration with Arduino, Raspberry Pi, ESP32, STM32, PIC, AVR and other controllers

✔ Suitable for OEM and bulk purchasing

✔ Tested before shipment for reliable performance

✔ Cost-effective solution for educational and industrial applications

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Learn More

Want to see how this module works? Watch this tutorial video and learn how to connect and use it in your DIY project.

https://www.youtube.com/watch?v=aLkkAsrSibo

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Ordering Information

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FAQ

Q1: What is the measuring range of the HY-SRF05 Ultrasonic Sensor?

The HY-SRF05 can accurately measure distances from 2cm to 450cm, making it suitable for both short-range and medium-range detection applications.

Q2: Is the HY-SRF05 compatible with Arduino?

Yes. The module is fully compatible with Arduino UNO, Mega, Nano, Leonardo, and most other Arduino-compatible development boards.

Q3: Can I use this ultrasonic sensor with Raspberry Pi?

Yes. The HY-SRF05 can be connected to Raspberry Pi through the GPIO interface. Since the Echo output is 5V, a simple voltage divider or level shifter is recommended to protect the Raspberry Pi’s 3.3V GPIO pins.

Q4: What operating voltage does the module require?

The sensor operates with a standard 5V DC power supply and consumes less than 2mA of static current.

Q5: What applications is this sensor suitable for?

The HY-SRF05 is widely used in:

• Robot obstacle avoidance
• Smart vehicles
• Liquid level monitoring
• Automatic parking systems
• Distance measurement
• Smart home devices
• Industrial automation
• STEM education
• IoT development
• DIY electronics

Q6: How accurate is the HY-SRF05?

Under suitable operating conditions, the module provides measurement accuracy of up to ±0.3cm, offering stable and repeatable distance detection.

Q7: Does this module require additional programming libraries?

No. Most Arduino IDE examples and open-source libraries support the HY-SRF05. Developers can quickly integrate the sensor into their projects using standard trigger and echo timing methods.

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