🌅 Arduino UNO + HC05 Bluetooth🔗 + Mobile Control🌐

I built a simple yet fun project where 3 LEDs (Red🔴, Green🟢, Blue🔵) are controlled wirelessly using a smartphone via Bluetooth (HC05 module).

📲 How it works:

Mobile📳 app sends📨 characters through Bluetooth.

Arduino UNO receives them via UART.

Depending on the command, it switches the corresponding LED ON/OFF.

⚡ Commands used:

a → Red LED🔴 ON

b → Red LED⚪ OFF

c → Green LED🟢 ON

d → Green LED⚪ OFF

e → Blue LED🔵 ON

f → Blue LED⚪ OFF

🛠️ Tech Stack: Arduino UNO | HC05 Bluetooth | UART Communication | Mobile App

This project shows how wireless control + embedded systems can make even small tasks smarter. Perfect stepping stone for IoT-based home automation!