This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module ... and best understood by referring the wiring diagram. If everything goes right,you should ...

Offered by Autodesk, Tinkercad is a free online platform you can use to build and test out your Arduino circuits ... input (e.g., push button, ultrasonic sensor, keypad), output (e.g., LED ...