Overview: The Fire Alarm System is a project developed using Arduino microcontroller along with a GSM module, buzzer, and flame sensor. It is designed to detect the presence of fire and send an alert ...

Hi, my name is Rahmat Hidayat. I code for fun and sometimes share my code here so I can reuse it later. Feel free to use or modify this project. If you need help setting it up, follow this tutorial.

A buzzer has two pins, namely positive and negative. The positive terminal is represented by the ‘+’ symbol and negative terminal is represented by the ‘-’ symbol just like an led and a capacitor.