HC-SR04-Ultrasonic Range Finder

HC-SR04 Ultrasonic Range Finder Sensor Module

The HC-SR04 Ultrasonic Range Finder is a widely used sensor for non-contact distance measurement. It operates by emitting ultrasonic sound waves at 40 kHz, then measuring the time it takes for the echo to return. This time difference allows the module to accurately calculate the distance to an object within a range of approximately 2cm to 4 meters.

Designed for ease of use, the HC-SR04 sensor module operates at 5V DC and includes trigger and echo pins for interfacing with microcontrollers such as Arduino, Raspberry Pi, and ESP8266. The compact and low-power device is ideal for robotics, obstacle avoidance, automation systems, and smart devices.

Key Features 📡

• Operating voltage: 5V DC
• Measurement range: 2cm to 4m
• Ultrasonic frequency: 40 kHz
• High accuracy with stable output
• Easy interface with microcontrollers
• Low power consumption and long-lasting

Applications 🤖

HC-SR04 sensors are extensively used in:

• Robotics for distance and obstacle detection
• Automated parking sensors
• Security systems with proximity detection
• Home automation devices
• Industrial automation and measurement systems

The HC-SR04 module provides a cost-effective, reliable solution for precise distance measurement in many projects, making it a favorite among engineers, hobbyists, and educators worldwide.