This project includes a 12-button keypad interfaced with a host MCU via I2C or UART, designed to serve as a mini keyboard for embedded systems. The STM32L010K4T6 handles debouncing and key scanning, ...

An IoT-based Fire and Smoke Detection System using Arduino, MQ2 smoke sensor, flame sensor, buzzer, and LCD display. It alerts users through visual and sound signals when dangerous levels of smoke or ...