Description

📏 HC-SR04 Ultrasonic Distance Sensor – Reliable Range Sensing for Your Smart Projects

The HC-SR04 is a best-selling ultrasonic sensor designed for precise, non-contact distance measurement. Whether you’re navigating a robot, monitoring liquid levels, or automating parking systems, this sensor delivers accurate, real-time distance data with minimal power usage. It’s simple to connect, easy to program, and trusted by makers and engineers around the world.

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🔧 Technical Specifications

• Model: HC-SR04

• Operating Voltage: 5V DC

• Quiescent Current: < 2mA

• Operating Current: 15mA

• Detection Range: 2cm to 400cm (0.8″ to 13 ft)

• Resolution: 0.3cm

• Ultrasonic Frequency: 40kHz

• Sensor Angle: 15°

• Dimensions: 45mm × 20mm × 15mm

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⚙️ Pin Configuration

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🌟 Key Features

✅ Wide Detection Range: From just 2cm up to 400cm
✅ High Accuracy: Resolution of 0.3cm for detailed readings
✅ Low Power: Operates on minimal current, perfect for mobile or battery-powered devices
✅ Plug & Play: Simple 4-pin interface works seamlessly with Arduino, Raspberry Pi, ESP32, and more
✅ Compact & Lightweight: Easy to mount in any enclosure or robot chassis

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🚀 Applications

• 🤖 Robotics – Obstacle detection & autonomous navigation

• 🚗 Automated Parking Systems – Distance monitoring

• 📊 Level Measurement – Water tanks, silos, and bins

• 📡 Proximity Detection – Entry alert and security systems

• 🔒 Smart Alarms & Safety Devices

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📘 Quick Start Guide

1. Connect:

   • VCC → 5V

   • GND → Ground

   • Trig → Digital output pin

   • Echo → Digital input pin

2. Triggering a Reading:

   • Send a 10µs HIGH pulse to the Trig pin.

3. Read the Echo:

   • Measure the time the Echo pin stays HIGH.

4. Calculate Distance:

   • Distance (cm) = Duration (µs) ÷ 58

   • Distance (inches) = Duration (µs) ÷ 148

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📦 Package Includes

• 1 × HC-SR04 Ultrasonic Sensor Module

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💡 Why Choose HC-SR04?
Because you need a distance sensor that’s affordable, accurate, and easy to use. The HC-SR04 is a classic tool for beginners and pros alike, powering everything from classroom projects to real-world automation systems.