ESP32-based poultry incubation system uses PID control to maintain 37.5°C temperature and 60% humidity for optimal egg hatching. DHT22 sensor feeds real-time environmental data to the ESP32 microcontroller, which drives a 4-channel relay module controlling heater, cooling fan, ultrasonic humidifier, and servo-driven egg turner. Firebase Cloud Database syncs incubation parameters to a mobile farmer dashboard via WiFi, enabling remote monitoring and setpoint adjustments. Fork this diagram on Diagrams.so to customize sensor types, add backup power circuits, or integrate additional actuators for your precision agriculture IoT project. The closed-loop PID feedback architecture ensures stable thermal regulation critical for commercial hatchery operations.