Under & Over Voltage Protection System Using ZMPT101B Sensor with ESP32

This project implements an Under and Over Voltage Protection System using the ZMPT101B AC voltage sensor module and an ESP32 microcontroller. The ZMPT101B sensor provides an isolated and accurate measurement of AC voltage by converting mains voltage into a proportional analog signal. The ESP32 reads this analog signal to calculate real-time RMS voltage levels through high-frequency sampling and signal processing. The system continuously monitors AC voltage and triggers alerts or protective actions when voltage levels fall below or exceed predefined safe limits, protecting connected appliances and electrical systems.

Code & Circuit Diagram :- https://github.com/PrateekSinghRajput/JustDoElectronics_Projects/tree/main/ESP32/ESP32_Blynk2.0_Projects/ESP32_ZMPT101B_Under_Over_Voltage_protection_system

Component List
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ESP32 Board
ZMPT101B sensor
20x4 LCD Display
I2C Module
5v relay Module
Zero PCB
AC Blub
USB Cable
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Project Buy Link
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Ready To Go Kit :- https://rzp.io/rzp/ThobkA2
Ready To Go Kit :- https://rzp.io/l/3lvOgiGQt
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