The SIM800L module needs special attention because it operates at 3.3V logic levels while Arduino uses 5V. We need a voltage divider circuit to protect the SIM800L from damage. If you are new to the ...

Open the gsm_communication.ino file in Arduino IDE. Install the SoftwareSerial library if not already installed. Connect the GSM module to Arduino: TX of GSM to Pin 10 of Arduino; RX of GSM to Pin 11 ...

GSM module sends an SMS alert to emergency contacts. System resets when no fire/smoke is detected. Code File 📂 Filename: fire_alarm_system.ino 📌 Language: Arduino C++. Installation & Setup Connect ...

The module, or shield, was developed in conjunction with Telefónica’s Physical Internet Laboratory and is available to purchase. The open-source GSM Shield comes with a Telefónica SIM card ready to be ...

Abstract: This project texplores the differential protection of transformers using an Arduino-based system combined with a GSM module. It aims to enhance transformer safety by detecting faults through ...