AWS IOT with Arduino ESP32
Revision as of 10:14, 9 April 2018 by Explorer (Talk | contribs)

In the earlier tutorial we discussed how to setup AWS IOT for an Amazon user account. Now lets see how to use the Arduino esp32 AWS IOT library to communicate with AWS server. 00Aws arduino esp32.jpg

AWS IOT for ESP32

Download the AWS IOT library for Arduino ESP32 from this link.
Now open the first example pubSubTest.ino as shown below. ESP32 AWS IOT LIB.png.

Wifi SSID and Host Address Configuration

Configure the below parameters at the beginning of the sketch as shown in the image.
WIFI_SSID
WIFI_PASSWORD
HOST_ADDRESS
CLIENT_ID
TOPIC_NAME
ESP32 AWS IOT SSID CONFIG.png


AWS Certificate Configuration

The below certificate and private key needs to be copied to aws_iot_certificate.c file in the form of array.

aws-root-ca.pem
certificate.pem.crt
private.pem.key

ESP32 AWS IOT Certificates.png

Upload the sketch and verify the output

Publish and subscribe(received) messages printed on terminal. ESP32 AWS IOT Terminal LOG.png

Published message viewed on MQTT Fx client software: ESP32 AWS IOT MQTT LOG.png

Publish a message from MQTT Fx Client and verify the received message on terminal. ESP32 AWS IOT PUBLISH SUBSCRIBE.png

Logging Temperature and Humidity using DHT11 sensor

After setting the AWS client and AWS IOT lib, lets log the real time temperature and humidity using DHT11 sensor.
Install the Adafruit DHT11 sensor library using Arduino Library Manager or download it from this link.

Do the connection as shown below. 0 ESP32 AWS IOT DTH11 Logging.png

Now copy paste the below code and configure the Wifi SSID, Host Address and upload the sketch.

Temp and Humidity logged to AWS IOT server. ESP32 AWS IOT DTH11 Logging.png

Download

Download the Arduino ESP32 AWS IOT lib and examples form this link.

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