Bring your automation and robotics projects to life with the HC-SR04 Ultrasonic Distance Sensor. Operating much like sonar, this module sends out a high-frequency sound wave and measures the time it takes for the echo to bounce back, calculating exact distances with impressive precision.

Whether you are building an obstacle-avoidance robot, a smart parking assistant, or an automated liquid level indicator, this sensor provides reliable, real-time data.

Key Features & Technical Specifications:

• Operating Voltage: $5\text{V DC}$

• Quiescent Current: Less than $2\text{mA}$

• Effectual Angle: $< 15^\circ$

• Detection Range: $2\text{cm} - 400\text{cm}$ ($1\text{ inch} - 13\text{ feet}$)

• High Precision: Accurate down to $0.3\text{cm}$

• Input Trigger Signal: $10\mu\text{s}$ TTL impulse

• Easy 4-Pin Interface: VCC ($5\text{V}$), Trig (Trigger Input), Echo (Receive Output), and GND (Ground).

Why Choose the HC-SR04 Module?

• Breadboard Friendly: Easily plugs into standard breadboards for quick prototyping without messy soldering.

• Widely Supported: Fully compatible with standard Arduino IDE libraries, making code setup quick and effortless for beginners and pros alike.

• Stable Performance: Features compact onboard processing crystals to ensure steady, reliable readings under varying project conditions.