Lightning Protection Device using Arduino

The Lightning Protection Device operates by continuously monitoring atmospheric electrostatic disturbances using the AS3935 lightning sensor. This specialized sensor is capable of detecting the electromagnetic signatures of lightning activity within a radius of up to 40 kilometers. The sensor communicates detected anomalies to the brain of the system, the Arduino Nano, which processes the incoming digital or I2C data packets. When the AS3935 registers a lightning event that crosses a pre-programmed threshold, the Arduino Nano immediately triggers a digital output signal. This output pin switches the 5V SPST relay module. In a practical deployment, the relay acts as an automated electronic switch capable of interrupting the power path or triggering a secondary heavy-duty contactor. By breaking the circuit during a thunderstorm, sensitive home appliances and electronics are effectively isolated from the main power grid, preventing damaging voltage spikes and induced power surges from traveling down the power lines and frying connected hardware. Once the storm passes and the sensor registers a return to normal atmospheric conditions, the system can reset or be manually toggled to restore grid power to the protected appliances.