Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

A collection of basic Arduino code examples and sketches for beginners. This repository provides simple, well-documented examples to help users get started with Arduino programming and hardware ...

Touchless Fan Control using Ultrasonic Sensor & Relay (Arduino) This project demonstrates a contactless, gesture-based fan switch using an ultrasonic distance sensor, Arduino Uno, and a relay module.