Ultrasonic Sensor Module HC-SR04

HC-SR04 Ultrasonic Range Finder

The HC-SR04 Ultrasonic Range Finder is a widely-used sensor for measuring distance and detecting objects, commonly found in various applications. This sensor uses sonar technology to determine the distance to an object, similar to how bats and dolphins navigate.

The module features two "eyes" on its front, which serve as the ultrasonic transmitter and receiver. This sensor integrates a transmitter, receiver, and control circuit in a compact, easy-to-use package. It provides accurate and stable readings unaffected by sunlight or dark materials, though it may struggle with acoustically soft materials like cloth.