This is a simple Digital Password Lock System built using Arduino, a 4x4 Keypad, and a 16x2 LCD display. The system prompts users to enter a password, masks the input for privacy, and validates it. If ...

Live temperature readings using DS18B20 sensor 📈 LCD display shows temperature + thresholds 🖥️ Rotary encoder to adjust min & max temperature limits 🔁 RGB LED indicators (Red = Hot 🔴, Blue = Cold ...