// C++ code // include the library code: #include // initialize the library with the numbers of the interface pins LiquidCrystal lcd(12, 11, 5, 4, 3, 2); int ultrasonic = 0; long ...

This project is based on an HC-SR04 ultrasonic sensor with Arduino to measure distance between the sensor and an object. The sensor sends ultrasonic waves and receives the reflected signal. The time ...

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus]’ ...