HC-SR04 - Ultrasonic Sensor Module
HC-SR04 Ultrasonic Sensor Module User Guide: Ultrasonic Sensor V1.0 1 http://www.handsontec.com Table of Contents 1.0 Introduction: 3 2.0: Module Specification 3 2.1: Sensor Element Construction 4 3.0: Ultrasonic Real Application 4 3.1 Car Parking Reverse Sensors 4 3.2: Liquid Level Detection
