H.A.R.V.E.S.T. System
Humidity-based And Regulation for Vegetation, Environment, Soil, and Temperature
Autonomous Irrigation
Controlled Intelligence
The H.A.R.V.E.S.T. System combines STM32F401 processing power with ESP8266 connectivity, delivering real-time environmental monitoring and adaptive irrigation control through multi-sensor fusion and MQTT telemetry.
System Components
Hover over the board to explore each module and its specifications
STM32F401CCU6
Main microcontroller running at 84MHz with FreeRTOS for real-time multi-tasking
ESP8266 WiFi
WiFi module for cloud connectivity via MQTT protocol
BME280 Sensor
Environmental sensor measuring temperature, pressure, and humidity
DS18B20 (3x)
Three 1-Wire soil temperature sensors for zone monitoring
Soil Moisture (3x)
Capacitive soil moisture sensors with analog output
Water Level (2x)
Analog water level sensors for tank monitoring
5-Ch Relay Module
12V relay board controlling pumps and solenoid valves
Power Supply
Multi-voltage power distribution with protection circuits
System Architecture
FreeRTOS Tasks
- • task_wifi: MQTT communication
- • task_sensor: Data acquisition
- • defaultTask: System heartbeat
MQTT Protocol
- • Broker: broker.mqtt.cool
- • Telemetry: d02/telemetry
- • Commands: d02/cmd
- • QoS: 0 (fire and forget)
Control Modes
- • AUTO: Sensor-driven
- • POMPA: Manual irrigation
- • SEDOT: Water transfer
- • STOP: Emergency shutoff