Ultrasonic Sensor Module ( HC-SR04 )

The HC-SR04 Ultrasonic Sensor is a popular module for non-contact distance measurement. It uses high-frequency sound waves to detect objects from 2cm to 400cm away with high accuracy. It is the go-to solution for obstacle avoidance in robotics and liquid level monitoring in smart tanks. Key Features: Stable Range: Provides reliable distance readings between 2cm and 400cm with a 3mm resolution. Non-Contact Sensing: Uses sonar technology to measure distances, unaffected by color or transparency of the target. Easy 4-Pin Interface: Simple connection using VCC, Trigger, Echo, and GND pins for quick integration. Wide Compatibility: Works seamlessly with Arduino, Raspberry Pi, ESP32, and other 5V microcontrollers.