Developing an Alarm System Using Arduino Technology

This research investigates the integration of Global System for Mobile Communications (GSM), laser technology, Arduino microcontrollers, and Light Dependent Resistors (LDR) to develop an active laser sensor security system for homes. The system activates when doors and windows are closed, whether locked or not, by utilizing an active laser detector connected to a microcontroller. This microcontroller interprets the detector's signal state, triggering an alarm through the laser and sending a call signal to a mobile phone via a GSM module if the laser beam is interrupted. By integrating these technologies, the paper offers a promising solution for improving home security and showcases potential innovative applications in electronics and telecommunications. The alert device automatically begins to ring whenever a person or object crosses in front of the laser light. The laser beam is nearly undetectable and may travel great distances without experiencing any scattering. When it detects any irregular activity, a laser security system can function as a stand-alone device that emits noise or commotion. It can also be a component of a larger security system or any other automation system that can notify users.