🌿 PlantCare — Smart Plant Health Monitoring System

A full-stack IoT-inspired smart plant health dashboard with real-time sensor monitoring, AI-based health analysis, automation controls, and trend visualization.

✨ Features

Feature	Details
📊 Live Dashboard	Soil moisture, temperature, humidity with progress bars
🚨 Smart Alerts	Color-coded warnings (🟢 Healthy / 🟡 Moderate / 🔴 Critical)
🧠 AI Decisions	Stress level analysis with actionable suggestions
⚙️ Automation	Auto watering & cooling fan toggle controls
📈 Trend Chart	Line graph of last 20 readings (Chart.js)
🏗️ Architecture	System diagram showing full IoT data flow
📡 REST API	POST sensor data from real Arduino/ESP32

🏗️ System Architecture

Rendering mermaid diagram...

📁 Project Structure

plant-health-monitor/
├── main.ts              # HTTP entrypoint
├── backend/
│   ├── index.ts         # Hono routes
│   └── database.ts      # SQLite queries
├── shared/
│   └── types.ts         # Types + AI health analysis
└── frontend/
    ├── index.html       # HTML shell
    ├── style.css        # Green eco theme
    └── app.tsx          # React dashboard

🔌 API Endpoints

`GET /api/status`

Returns latest sensor reading + AI health analysis + automation state.

`GET /api/history?limit=20`

Returns last N readings for chart rendering.

`POST /api/reading`

Ingest real sensor data from Arduino/ESP32:

{ "soilMoisture": 45, "temperature": 28, "humidity": 60 }

`POST /api/simulate`

Generate a simulated sensor reading (for demo/testing).

`GET|POST /api/automation`

Read or update watering/fan automation state.

🤖 AI Health Logic

Condition	Score	Alert
Moisture < 20%	+3	🚨 Critical dry
Moisture < 40%	+1	⚠️ Low moisture
Temp > 38°C	+3	🔥 Critical heat
Temp > 32°C	+1	🌡️ Too warm
Temp < 10°C	+2	🥶 Too cold
Humidity < 30%	+1	💨 Dry air
Humidity > 85%	+1	🌧️ Fungal risk

Score 0 → Healthy 🟢
Score 1–2 → Moderate 🟡
Score 3+ → Critical 🔴

🌱 Connecting a Real Sensor (Arduino/ESP32)

// Arduino / ESP32 snippet
#include <WiFi.h>
#include <HTTPClient.h>

HTTPClient http;
http.begin("https://your-val-endpoint.web.val.run/api/reading");
http.addHeader("Content-Type", "application/json");

String body = "{\"soilMoisture\":" + String(moistureVal) +
              ",\"temperature\":" + String(tempVal) +
              ",\"humidity\":" + String(humidityVal) + "}";

int code = http.POST(body);