Smart over voltage or under voltage with relay using Arduino / Aimar Muhammad Kamarul Zaman

Overvoltage conditions in a circuit, comprising components such as capacitors, wires, switches, and light bulbs, can lead to progressive damage. Similarly, undervoltage conditions can degrade performance as components are forced to operate under more strenuous conditions. These issues are prevalent in both DC and AC circuits and can lead to significant problems over time. Given that most households globally utilize AC power for their electrical components, and considering that electrical faults were the second leading cause of home structure fires from 2015 to 2019, accounting for 13% of such incidents, the need for a solution is evident. This project, titled 'Smart Over Voltage Or Under Voltage With Relay Using Arduino', aims to mitigate these risks. The system is designed to monitor voltage levels and detect if they exceed or fall below certain thresholds. The Arduino Uno D1 R1, integrated with an ESP8266, serves as the microcontroller for this system. It not only monitors voltage stability but also controls other components, such as an LED that blinks and a buzzer that emits a continuous sound in the event of undervoltage conditions. The Arduino Uno D1 R1 also transmits data to an LCD to display the current voltage and forwards the output to an online software platform. This feature enhances user accessibility, as the software can be accessed via a smartphone. The system also enables users to interrupt the circuit remotely through the software if the voltage becomes excessively high, allowing them to seek professional assistance to rectify the issue. A prototype system has been developed as part of this project