HC-SR04 Ultrasonic Distance Sensor Module for Arduino, ESP32 & Raspberry Pi | Distance Measuring Sensor
Measure distances accurately with the HC-SR04 Ultrasonic Distance Sensor Module, compatible with Arduino, ESP32, Raspberry Pi, NodeMCU, STM32, and other microcontrollers. Using ultrasonic sound wave technology, this sensor provides precise non-contact distance measurement, making it ideal for robotics, obstacle avoidance, smart parking systems, water level monitoring, automation, IoT projects, and STEM education. With a simple Trigger and Echo interface, low power consumption, and reliable performance, the HC-SR04 is one of the most widely used ultrasonic sensors for beginners, students, makers, and professional developers.
Customize
Share :
HC-SR04 Ultrasonic Distance Sensor Module for Arduino, ESP32 & Raspberry Pi
The HC-SR04 Ultrasonic Distance Sensor Module is a reliable and cost-effective non-contact distance measurement sensor widely used in robotics, automation, IoT, and embedded electronics projects. It measures the distance to an object by transmitting ultrasonic sound waves and calculating the time taken for the echo to return, delivering fast and accurate distance measurements.
Featuring a simple four-pin interface (VCC, Trig, Echo, GND), the HC-SR04 integrates easily with Arduino, ESP32, Raspberry Pi, NodeMCU, STM32, and other development boards. Its high accuracy and stable performance make it suitable for applications such as robot obstacle avoidance, autonomous vehicles, smart parking systems, liquid level monitoring, proximity detection, and industrial automation.
Whether you're building an autonomous robot, distance measurement system, or smart IoT device, the HC-SR04 offers dependable and efficient ultrasonic sensing.
Key Features
- Non-contact ultrasonic distance measurement
- High measurement accuracy and stable performance
- Simple Trigger and Echo digital interface
- Fast response time
- Compact PCB design
- Low power consumption
- Easy integration with microcontrollers
- Compatible with Arduino, ESP32, Raspberry Pi, NodeMCU, and STM32
- Suitable for indoor robotics and automation projects
- Ideal for educational, DIY, and industrial prototype applications
- Reliable obstacle detection and distance sensing
- Easy to use with extensive software library support
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | HC-SR04 Ultrasonic Distance Sensor Module |
| Measuring Principle | Ultrasonic Echo Ranging |
| Operating Voltage | 5V DC |
| Operating Current | Approximately 15 mA ) |
| Measuring Range | 2 cm – 400 cm |
| Measuring Accuracy | ±3 mm (Typical) |
| Operating Frequency | 40 kHz |
| Interface | Trigger & Echo Digital Signals |
| Detection Angle | Approximately 15° |
| Compatibility | Arduino, ESP32, Raspberry Pi, NodeMCU, STM32 |
Applications
- Obstacle Avoidance Robots
- Distance Measurement Systems
- Smart Parking Systems
- Water Level Monitoring
- Tank Level Measurement
- Autonomous Mobile Robots
- Industrial Automation
- Smart Dustbins
- Proximity Detection
- Security Systems
- IoT Projects
- STEM Education
- Engineering Projects
Package Includes
- 1 × HC-SR04 Ultrasonic Distance Sensor Module
Why Buy from Horizocart?
- Quality-tested ultrasonic sensor modules
- Reliable distance measurement performance
- Secure packaging for safe delivery
- Fast shipping across India
- Technical support for students, makers, and professionals
- Trusted supplier for Arduino, ESP32, Raspberry Pi, robotics, and IoT components
- Ideal for educational, research, and industrial prototype applications
Frequently Asked Questions
Q. Is the HC-SR04 compatible with Arduino Uno?
Yes. The HC-SR04 is fully compatible with Arduino Uno, Nano, Mega, Micro, and other Arduino-compatible development boards.
Q. Can I use the HC-SR04 with ESP32?
Yes. The sensor works with ESP32. Since the Echo pin outputs a 5V signal, a suitable voltage level conversion should be used if required by your ESP32 board.
Q. What is the measuring range of the HC-SR04?
The module typically measures distances from 2 cm to 400 cm with an accuracy of approximately ±3 mm.
Q. Can this sensor detect transparent or soft objects?
The sensor's performance may vary depending on the object's material, shape, surface texture, and angle. Soft or sound-absorbing materials may reduce detection accuracy.
Q. Is the HC-SR04 suitable for robotics projects?
Yes. It is one of the most widely used ultrasonic sensors for obstacle avoidance robots, autonomous vehicles, smart automation systems, and educational robotics.
