Detect obstacles with Ultrasonic Sensor HC-SR04 | Arduino | LED alert if distance threshold breached
Koushik's Digilab - Learn how to connect and program an Ultrasonic Sensor like HC-SR04 with Arduino microcontroller to detect obstacles and how to build rules and logic based on when an object comes within a certain threshold distance from the sensor. Sketch program and schematic circuit diagram and connections explained along with a live working demo.
Detailed component list, circuit schematic diagram, Arduino sketch code and working images can be found in below URL.
https://sites.google.com/view/koushik...