This project demonstrates a simple proximity-based gate control system using an ultrasonic sensor, a button, and a servo motor. The gate will open automatically when an object is detected within 25 cm ...

Wind direction can be calculated by taking velocity readings from two ultrasonic sensor pairs perpendicular to each other and using a bit of simple trigonometry. For an ultrasonic anemometer to ...

Custom library containing helper functions to control the motors.

With a standard old HC-SR04 ultrasonic sensor, an audio module and a servo ... around you if they’re too close for comfort. As simple as this project may sound like for anyone who has a bunch ...