A code for ESP32 controller and a set of web-tools to gather, analyse, monitor and view stat and graphs for Peacefair PZEM-004Tv30 PowerMeter.
- WebUI via self-hosted HTTP/WebSocket server
- Real-time gauges and power charts
- metrics collector in controller's memory pool
- data/metrics export via json
An older ESPEM version 2 was based on 3rd party lib. It's code still available under 2.x branch. ESPEM Ver 3 switched to it's own library pzem-edl. I wrote this lib to overcome limitations of the classic olehs's and mandulaj's libs. Being versatile those libs provided only basic functions talking to PZEM's using Arduino's blocking IO via serial port. New lib uses event-driven approach and provides extendable design API for multiple PZEM communication over single port.
| Version 2.x | Version 3.0 | |
|---|---|---|
| ESP8266 | YES | NO |
| ESP32 | YES | YES |
| PZEM004v30 | YES | YES |
| old PZEMv30 | YES | NO (planned) |
| PZEM017 (DC version) | NO | NO (planned) |
| 3 phase option | NO | YES (in progress) |
| Time Series Charts | YES (Basic) | YES (extendable) |
| TS in PSRAM | NO | YES |
Under /www there is a set of php/sql scripts that could be hosted undel LAMP to gather and calculate stats over long-term periods. Little bit outdated but still usable. No need for any cloud services, spyware etc... just a raspberry/orangepi running web-server with sqlite/mysql DB. It's possible to collect data from any number of PZEM monitors and store it in the DB for a long-term stats or get a PowerChart sampled data from the espem itself.
An example of exernal daily stats dashboard
This code is available under the GPLv3 license