Smart Garden: 3-Zone IoT Watering System (Prototype)

Developed a 3-zone smart watering prototype with clear pin mapping and circuit design around an ESP32. The system supports Wi-Fi mobile control and continues operating without internet via Offline Scheduling. Automation rules can be configured in the Blynk app, using real-time sensor readings to trigger watering decisions per zone.

1. 01Defined a structured 3-zone architecture with explicit pin mapping for relays, sensors, and power lines.
2. 02Implemented offline scheduling by storing schedules locally on the device to keep routines running during network outages.
3. 03Produced KiCad schematics and I/O documentation to support repeatable installation, troubleshooting, and future expansion.
4. 04Designed a clean Blynk dashboard for live status display, sensor readouts, and automation settings.
5. 05Built modular C++ firmware (sensor, control, scheduling, connectivity) for readability and long-term maintainability.

• 3-zone watering prototype with a main controller (ESP32 + relay module) to drive solenoid valves per zone
• Circuit schematic and pin-mapping design prepared in KiCad
• Installation guide and wiring documentation with detailed Input/Output definitions (sensors/relays/valves)
• Blynk mobile app for real-time sensor monitoring and automation rule configuration
• ESP32 firmware written in C++ with a clear explanation of program structure and control logic
• Hybrid operating modes: Manual control / Scheduled watering / Sensor-based automation

• ESP32
• C++ (Firmware)
• Blynk IoT
• KiCad
• Sensors
• Relay Modules
• Wi-Fi

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