AWS IoT integration with ESP32 to publish temperature/humidity from DHT11 sensor remotely via MQTT
Koushik's Digilab - This program shows how we can integrate ESP32 microcontroller with AWS IoT services to capture live temperature & humidity readings from a DHT11 sensor and publish the values over the internet using MQTT pub/sub mechanism into AWS IoT console.
We need to login to AWS IoT services console and setup a Thing, create Certificate keys, create a Policy and use the REST API endpoints to publish custom messages from an ESP32 IoT sensor (DHT11) to an AWS IoT topic. The MQTT test client within AWS IoT is then used to subscribe to that topic to get Temp & Humidity readings from the sensor - all happening over the internet.
Detailed component list, circuit schematic diagram, Arduino sketch code and working images can be found in below URL.
https://sites.google.com/view/koushik...