Advanced Smart Energy Meter Source Code with Web Dashboard & CSV Logging

Description

Turn your ESP32 into a professional-grade, real-time smart energy monitor.

This digital download provides the complete, ready-to-compile ESP32 source code for building an advanced WiFi-enabled energy meter. Designed specifically for the ESP32 microcontroller and the PZEM-004Tv30 sensor, this code does the heavy lifting for your DIY IoT power monitoring projects. It seamlessly tracks voltage, current, power, energy consumption, frequency, and power factor while providing a sleek web-based API and LCD interface.

Please Note: This is a strictly digital product containing the downloadable source code (.ino files). No physical hardware, sensors, or microcontrollers are included.

Key Features

• Real-Time Data API: Generates dynamic JSON endpoints (/api/now) streaming live metrics like voltage, current, active power, energy, frequency and power factor directly to your browser or smart home system.
• Built-in Cost Calculator: Automatically calculates total energy costs and predicts monthly bills based on a customizable cost-per-kWh variable.
• Local CSV Data Logging: Uses SPIFFS memory to log energy data every 10 seconds. You can easily download your historical data (/energy.csv) directly from the web server.
• Smart Anomaly Detection: Programmed to flag system statuses including OVER VOLTAGE, UNDER VOLTAGE, OVER CURRENT, and MAINS OFF.
• WiFi Setup Portal: Integrated WiFiManager ensures you never have to hardcode your Wi-Fi credentials. Connect seamlessly via an auto-generated setup portal.
• I2C LCD Integration: Pre-configured logic for a 20×4 I2C Liquid Crystal Display, featuring automatic alternating pages to show all your power metrics without pressing a button.
• Over-The-Air (OTA) Updates: Update your firmware wirelessly without ever plugging the ESP32 back into your computer.

Hardware Compatibility

To utilize this source code, you will need to assemble the following hardware:

• ESP32 Development Board
• PZEM-004T v3.0 AC Energy Monitor Sensor
• 20×4 I2C LCD Display

Required Arduino Libraries

This project relies on several popular, open-source libraries. Ensure you have the following installed in your Arduino IDE:

• WiFi.h & WebServer.h (Built into ESP32 core)
• PZEM004Tv30.h
• ArduinoJson.h
• WiFiManager.h
• LiquidCrystal_I2C.h

What You Get?

• Instant access to the complete, fully commented ESP32 source code.
• Clean, modular code structure organized into logical sections (Sensors, JSON Builders, Web Routes, Storage, and OTA).
• A perfect companion firmware for your custom PCB or breadboard projects.
• Complete source code compatible libraries.
• Complete Circuit Diagram.

Build your ultimate home energy dashboard today with this powerful, plug-and-play source code!