Take control of your energy usage with this DIY 3-phase energy monitor! Using three PZEM004T v3.0 modules, this device measures voltage, current, power, and energy consumption for each phase independently. With seamless integration into Home Assistant via ESPHome or MQTT, enjoy real-time data visualization, custom automations, and alerts. Affordable, reliable, and open-source, it's the perfect solution for homes or small businesses.

• Monitor energy consumption for 3-phase, 2-phase, or 1-phase setups.
• Powered by ESP-01 with onboard LEDs for power and data transfers.
• Compatible with Home Assistant for seamless integration.
• Access to schematics and PCB Gerber files.
• Fully customizable for advanced features.
• Standalone software version coming soon.

• Home Assistant (Standalone software version coming soon).
• USB-to-Serial Hardware to program the ESP-01.
• ESPHome Setup Guide: Getting Started with ESPHome.
• ESP-01 Programmer Diagram:
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For a professional enclosure, consider:

• APRA DB6 Ventilated Module.

Demo Video.

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This project is licensed under the GPL-3.0 License. Learn More.