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.env.sample

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+# Django Settings
+SECRET_KEY=your-secret-key-here
+DEBUG=True
+
+# Database
+CONNECTION_STRING=postgresql://postgres:password@localhost:5432/iotdashboard
+
+# Redis Configuration
+REDIS_HOST=localhost
+REDIS_PORT=6379
+REDIS_DB=0
+
+# MQTT Configuration
+MQTT_BROKER=localhost
+MQTT_PORT=1883
+MQTT_USER=mqtt_user
+MQTT_PASS=mqtt_password
+
+# GPT/OpenAI (Optional)
+OPENAI_API_KEY=your-openai-key-here