This project implements a rotating ultrasonic distance scanner using an Arduino, an HC-SR04 ultrasonic sensor, and an SG90 servo motor. Distance readings are transmitted over serial and visualized in ...
The SparkFun Ultrasonic Distance Sensor - TCT40 (sen-24805) a user-friendly upgrade to the popular HC-SR04 sensor, offers non-contact distance measurement from 2cm to 400cm with an accuracy of 3mm.