HC-SR04 ultrasonic distance sensor

HC-SR04 Ultrasonic Distance Sensor – Accurate Range Measurement for Arduino & Robotics

The HC-SR04 Ultrasonic Distance Sensor Module offers precise non-contact distance measurement using ultrasonic waves. Widely used in robotics, automation, obstacle avoidance, and smart systems, it provides reliable and accurate distance data for microcontrollers like Arduino, ESP32, and Raspberry Pi.

Key Features:

• Measuring Range: 2 cm – 400 cm (0.8″ – 157″)

• Accuracy: ±3 mm

• Operating Voltage: 5V DC

• Interface: 4 pins (VCC, Trig, Echo, GND)

• Trigger Frequency: 40kHz ultrasonic pulse

• Low Power Consumption: Ideal for embedded and battery-powered projects

• Applications: Object detection, robot navigation, parking sensors, distance measurement, liquid level sensing

Easy to integrate and perfect for makers, students, and developers building smart automation or distance-based systems.