This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...
Measuring just 1.3'' x 0.3'' x 0.75'', the SM300FP miniature ultrasonic proximity sensor can detect materials at distances of 0.25'' to 4'', reportedly up to 12 times farther than many standard prox ...