Howdy. Today I came up with the another security system method that detects vibrations and sends an alert message and can even make calls. Check out the first of my security systems. Alright, let's do this. Before beginning the work, you might need to configure your GSM.

Let's do Wiring

To communicate with the sensor and to trigger the GSM at the right time, we need the do the wiring connections as shown in the schematic below.

Coding time

Alright. It's time to control the body by it's soul. Copy and paste the code in your Arduino IDE. Then compile and upload the code. Make sure you have selected the right port and the board.

Working Prototype

I believe in pictorials rather than words. So, here I show the working prototype in a pictorial.

Thank you

Suggestions, inquires, complaints? Drop mail or comment below.

EXPANDED TECHNICAL DETAILS

Intrusion Detection

This security system uses the SW-420 Vibration Sensor to detect tampering, such as attempting to force open a door or breaking a window.

• Sensitivity Tuning: The SW-420 has an onboard potentiometer to adjust the vibration threshold. The Arduino monitors the digital output; when a high signal is detected (indicating movement), the alarm sequence is triggered.
• GSM Notification: Integrated with a SIM800L or SIM900A GSM module, the Arduino sends a real-time SMS alert to the owner's phone.

System Reliability

• Power Management: In a commercial-grade setup, the system would include a Li-Po battery backup and a charging circuit to ensure protection during power outages.
• Arming/Disarming: The user can arm or disarm the system via a hidden switch or by sending a specific SMS command back to the GSM module, providing a remote control interface.