Ultrasonic Sensor HC-SR04 The Ultrasonic Sensor HC-SR04 is a compact and precise module designed for non-contact distance measurement, ideal for robotics, automation, and IoT projects. Operating at 5V, it uses ultrasonic waves to measure distances from 2cm to 400cm with high accuracy, making it perfect for obstacle avoidance, proximity detection, and level sensing. The sensor features 4 pins (VCC, GND, Trig, Echo) for seamless integration with Arduino, Raspberry Pi, or other microcontrollers. By sending a trigger pulse and measuring the echo response, it provides reliable distance data with a 15-degree detection angle. The HC-SR04 supports simple digital I/O interfaces and is compatible with Arduino IDE, enabling straightforward programming and prototyping. Its robust, surface-mount design ensures durability and a small footprint, suitable for both educational and professional applications. The module includes an onboard LED for status indication, enhancing ease of use during setup and operation. Specifications Parameter Details Operating Voltage 5V Measurement Range 2cm-400cm Pins 4 (VCC, GND, Trig, Echo) Detection Angle 15 degrees Accuracy ±3 mm Operating Current 15 mA Interfaces Digital I/O Trigger Pulse Width 10 µs (minimum) Ultrasonic Frequency 40 kHz Response Time Up to 38 ms Dimensions 45 x 20 x 15 mm NOTE: Requires external connections for setup. SKU: HCSR04-US Category: Arduino
