The sensor continuously sends out infrared light and measures how much of that light is reflected. When a reflective object is within its set detection range, it returns a low signal. The Arduino ...

This project demonstrates an environment-aware smart LED control system using Arduino. A potentiometer is used to simulate ambient light levels, while an ultrasonic sensor detects the distance of ...

[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]’ ...

This project demonstrates how to send WhatsApp notifications using an Arduino UNO R4 WiFi board with CircuitDigest Cloud's WhatsApp API. The system uses an ultrasonic sensor to detect proximity and ...