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Integration Overview

Combine all components into a complete working system.

What You'll Learn

  • Connect all sensors to ESP32
  • Display data locally on LCD/TFT
  • Dual Connectivity: Toggle between Secure Mode (certificate-based TLS for AWS IoT Core) and Unsecure Mode (for local server testing).
  • Multi-Protocol Support: Use MQTT, HTTP, or CoAP based on your project requirements.
  • Handle errors and edge cases

System Architecture

+--------+     +---------+     +----------+
| Sensors|---->|  ESP32  |---->|  Cloud   |
+--------+     |         |     | (MQTT/   |
+--------+     | + WiFi  |     |  HTTP)   |
| Displays|<----|         |     +----------+
+--------+     +---------+

Integration Steps

  1. Complete Code - Full system code
  2. Testing - Verify everything works

Data Flow

Sensor Reading

  1. Read temperature sensor
  2. Read humidity sensor
  3. Read vibration sensor
  4. Read acoustic sensor

Local Display

  1. Update LCD with current values
  2. Update TFT with charts/graphs

Cloud Transmission

  1. Format data as JSON
  2. Publish to MQTT topic
  3. Or POST to HTTP endpoint

Complete Code

See Complete Code for the full integration example.

Testing

See Testing for verification procedures.

Next Steps