Opensource Raspberry Pi Smartmeter
I was missing the ability to measure and visualise the energy consumption in my smarthome. For this reason I developed a smartmeter / energymonitor as an extension for the Raspberry Pi, which I would like to share for rebuild / improvement / expansion. The piMeter.
The smartmeter can record the following data across 3 phases:
- Current RMS
- Voltage RMS
- Active power
- Apparent power
- Reactive power
- Accumulated active, apparent and reactive power
All smartmeter data is visualised on a web front-end. It shows consumption data for a given day, month or year, and can also display real-time data of actual consumption. The real-time data is stored in RAM — it keeps 10 minutes of data in a buffer and sends it to the browser when needed. The long-term data is stored in a MariaDB on my NAS. Storing this data directly on the Pi is not recommended due to the high read/write cycles on the SD card.
The smartmeter is based on the ADE9000 chip from Analog Devices, which communicates with the Raspberry Pi via SPI. For the current measurement I use SCT-013-000 current transformers from YHDC. They are cheap and can measure currents up to 100 A.
Web frontend
Smartmeter board
Case
Resources
Disclaimer
Working with 230 V is dangerous. The board has no protection against accidental contact. I accept no liability for damage to persons or property resulting from the reproduction of the meter.