The Garden Brain — Water on a Real Weather Budget, Not a Timer

You'll walk away with: A three-zone garden controller that Claude Code built — an ESP32 reading per-zone soil moisture, on-site rainfall and temp/humidity, publishing over MQTT to a small Python "budget" service that runs a real evapotranspiration water balance, checks tomorrow's forecast, and only opens a valve when the soil, the weather, and the model all agree the plants actually need it — deferring the cycle when real rain is coming, and showing you the water it saved.

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