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How does it read your electricity meter?
by voidz 10y ago
How does it read your electricity meter?
- pjc50 10y agoI implemented this project: https://github.com/pjc50/emon-server https://github.com/pjc50/emon-server The meter has a (standardised) red LED that flashes once for each watt-hour. The Pi has a phototransistor that turns flashes into a GPIO transition interrupt. I've put it on my solar panel generation meter, and plan to build another (slightly improved) unit to monitor the mains input meter.
- exhilaration 10y agoVery nice, I've got a modern electric meter but had no idea this was possible.