Eliminate Unreliable Distance Measurement & Project Stalls

Are you tired of automation projects failing due to inaccurate distance readings? Do your robotic systems struggle with consistent obstacle avoidance, leading to costly errors or redesigns? The HC-SR04 Ultrasonic Distance Sensor Module solves these critical challenges, providing the precision and stability you need to build robust, intelligent systems. Without reliable distance data, your projects can suffer from inefficient operation, collision risks, and a lack of consistent performance. This sensor is your solution to achieving dependable spatial awareness.

How the HC-SR04 Delivers Accurate, Non-Contact Detection

The HC-SR04 Ultrasonic Distance Sensor Module operates on the principle of sound wave propagation. It works by transmitting a high-frequency ultrasonic pulse (Trig pin) into the environment. When this pulse encounters an object, it reflects back as an echo. The sensor then measures the precise time it takes for this echo to return to the receiver (Echo pin). By knowing the speed of sound, the module accurately calculates the distance between the sensor and the object.

This non-contact method ensures measurements are unaffected by surface color or transparency, which can challenge optical sensors. Its robust design provides stable performance and a fast response time, crucial for dynamic applications like robotics and real-time obstacle detection. The four-pin interface (VCC, Trig, Echo, GND) simplifies wiring and integration, making it accessible for both beginners and experienced developers to quickly implement reliable distance sensing into their projects.

Versatile Applications for Your Automation & Robotics Needs

The HC-SR04 Ultrasonic Distance Sensor Module is an indispensable component for a wide array of projects, enabling capabilities across various fields:

• Robotics Development: For autonomous navigation, obstacle avoidance, and path planning in mobile robots.
• Automation Projects: Implementing smart systems for object detection, presence sensing, and automated control.
• Smart Devices & IoT: Integrating spatial awareness into smart home devices, environmental monitoring, or interactive installations.
• Proximity Sensing: Detecting the presence of objects or people within a defined range.
• Distance Measurement Devices: Building custom tools for precise length or depth measurement.
• Educational & DIY Electronics: A fundamental sensor for learning about microcontrollers, sensors, and basic robotics.
• Compatible with: Arduino, ESP32, Raspberry Pi (via GPIO), and various other microcontroller platforms.

Key Specifications

• Model: HC-SR04 / HCSR04
• Detection Range: 2cm to 400cm
• Operating Voltage: Typically 5V DC
• Operating Current: Less than 15mA
• Output Signal: TTL level
• Interface: 4 Pins (VCC, Trig, Echo, GND)
• Accuracy: Up to 0.3cm (depending on environment and implementation)

While designed for broad compatibility with Arduino and microcontroller platforms, we always recommend confirming the specific voltage and signal requirements for your particular project or development board. Not sure? Contact us with your microcontroller model and we will confirm compatibility guidance.

Confidence in Every Purchase: Quality Tested & Protected

At 360 Digitizing Shop, your project’s success is our priority. Every HC-SR04 Ultrasonic Distance Sensor Module is rigorously function-tested before shipping, ensuring that defective units are never sent. We stand by the quality of our components, and in the rare event a defective item arrives, you are fully protected: a refund will be processed within 4 days under our buyer protection policy. Build your next innovation with confidence.

Frequently Asked Questions

What is the HC-SR04 Ultrasonic Distance Sensor Module used for?
The HC-SR04 module is used for precise, non-contact distance measurement in various projects, including robotics, obstacle avoidance systems, automation, smart devices, and DIY electronics, especially with Arduino and other microcontrollers.

What is the effective detection range of the HC-SR04 sensor?
The HC-SR04 Ultrasonic Distance Sensor Module can accurately detect distances ranging from 2cm up to 400cm (4 meters).

How does the HC-SR04 sensor measure distance?
It measures distance by emitting an ultrasonic sound wave and then calculating the time it takes for the echo of that wave to return after bouncing off an object. This “time-of-flight” is used to determine the distance.

How many pins does the HC-SR04 module have and what are they for?
The HC-SR04 module has four pins: VCC (power supply, typically 5V), Trig (trigger for sending ultrasonic pulse), Echo (receives the echo pulse), and GND (ground).

How can I ensure the HC-SR04 will work with my specific project or microcontroller?
The HC-SR04 is widely compatible with Arduino, ESP32, Raspberry Pi (via GPIO), and other microcontrollers. We recommend reviewing your project’s voltage and signal requirements, and your microcontroller’s documentation, to ensure proper integration. If unsure, contact us with your microcontroller model for guidance.

What is your quality assurance process for the HC-SR04 sensor?
Every HC-SR04 Ultrasonic Distance Sensor Module is function-tested before shipping to prevent defective units from being sent. If a defective item arrives, you are protected by our buyer protection policy and will receive a refund within 4 days.