Semi-Automated Microgreens Grow System
A 4-tier, 8-tray rack. An ESP32 drives a relay that switches timed LED lighting, a flood-and-drain pump, and a fan. A DHT22 sensor reads temperature and humidity, and a float switch checks the water level. The system is designed to be monitored by phone over Wi-Fi, with mains power protected by an RCD breaker.
Role: project owner, setting the requirements.