Fencing System and Contact Traceability System

The Fencing System and Contact Traceability System is built around an Arduino Uno micro-controller that coordinates location tracking and wireless communication. At the heart of the positioning system is the NEO-GPS module, which constantly communicates with overhead satellites to determine the device's precise geographical coordinates, including latitude and longitude. The Arduino reads this positional data and compares it against pre-programmed boundary coordinates representing a designated quarantine zone or restricted area. If the Arduino detects that the current GPS coordinates fall outside of this permitted boundary, it triggers a response through the connected SIM800L GSM module. Using a standard 2G SIM card, the GSM module acts as a cellular transmitter capable of sending SMS text messages or alerts to authorities or designated contacts, thereby reporting a boundary violation. Simultaneously, the system utilizes an SSD1306 OLED display, connected via I2C communication, to provide real-time visual feedback to the user. This small screen can show current status messages, GPS fix status, and warning notifications directly on the device. Power is supplied to the entire circuit through an adequate power supply to ensure both the microcontroller and the power-hungry cellular module operate reliably. The entire logic is programmed using the Arduino IDE, relying on specialized software libraries to seamlessly handle GPS sentence parsing, OLED graphics rendering, and AT-command communication with the GSM module.