kodebeat / papers / greenops
Shifting household load into cleaner hours, locally
A local-first grid intensity meter with an e-paper display.
Tracks grid carbon intensity for your region and turns it into a run-or-wait recommendation for energy-hungry appliances, over a small HTTP API with recent history and a week-shifted comparison. There is a web dashboard with a trend chart, and firmware for a Raspberry Pi Pico 2 W with a tri-colour e-paper display. A mock Pico runs the whole system on a laptop before any hardware is bought.
What is in it
- The problem — what goes unanswered without it, and who notices first.
- Why the obvious alternative falls short — stated plainly, including where it is the better choice.
- How it works — the method, not a feature list.
- Concrete use cases — with console output quoted from the repository, never reconstructed.
- The methodology behind any number it emits — every term shown, so the figure survives a question.
- What it deliberately does not do — the section most papers leave out.
Part of the GreenOps theme.
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