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Greenhouse Controller
Solar-powered greenhouse monitoring and control on a 12 V lead-acid battery
An ESP32-S3 greenhouse controller that charges a 12 V lead-acid battery from a solar panel (MPPT), switches pumps and grow LEDs, measures soil moisture and its own energy use, and integrates with Home Assistant through ESPHome. Built from Circuit Issues KiCad design blocks; the board is being redesigned and prototypes follow.
Highlights
- ESP32-S3 wireless core (Wi-Fi + BLE)
- Solar MPPT charging of a 12 V lead-acid battery (BQ24650)
- Buck converter for the logic rail from the 12 V battery
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