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[[category:ESP32 Arduino]]
 
[[category:ESP32 Arduino]]
In the earlier [[Secure IOT with AWS and Hornbill ESP32|tutorial]] we discussed how to setup AWS IOT for an Amazon user account. Now lets see hot to use the Arduino esp32 AWS IOT library to communicate with AWS server.
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In the earlier [[Secure IOT with AWS and Hornbill ESP32|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.
 +
[[File:00Aws arduino esp32.jpg]]
  
 
=AWS IOT for ESP32=
 
=AWS IOT for ESP32=
Download the AWS IOT library for Arduino ESP32 for the below link.
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Download the AWS IOT library for Arduino ESP32 from [https://github.com/ExploreEmbedded/Hornbill-Examples/tree/master/arduino-esp32/AWS_IOT this link].<br>
Now open the first example sub
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Now open the first example pubSubTest.ino as shown below.
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[[File:ESP32 AWS IOT LIB.png]].
  
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=Wifi SSID and Host Address Configuration=
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Configure the below parameters at the beginning of the sketch as shown in the image.<br>
 +
WIFI_SSID<br>
 +
WIFI_PASSWORD <br>
 +
HOST_ADDRESS <br>
 +
CLIENT_ID <br>
 +
TOPIC_NAME <br>
 +
[[File:ESP32 AWS IOT SSID CONFIG.png]]
  
=
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 +
=AWS Certificate Configuration=
 +
The below certificate and private key needs to be copied to aws_iot_certificate.c file in the form of array.<br>
 +
aws-root-ca.pem
 +
certificate.pem.crt
 +
private.pem.key
 +
[[File:ESP32 AWS IOT Certificates.png]]
 +
 
 +
=Upload the sketch and verify the output =
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Publish and subscribe(received) messages printed on terminal.
 +
[[File:ESP32 AWS IOT Terminal LOG.png]]
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<br><br>
 +
 
 +
Published message viewed on MQTT Fx client software:
 +
[[File:ESP32 AWS IOT MQTT LOG.png]]
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<br><br>
 +
 
 +
Publish a message from MQTT Fx Client and verify the received message on terminal.
 +
[[File:ESP32 AWS IOT PUBLISH SUBSCRIBE.png]]
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<br><br>
 +
 
 +
=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.<br>
 +
Install the Adafruit DHT11 sensor library using Arduino Library Manager or download it from [https://github.com/adafruit/DHT-sensor-library this link]. <br> 
 +
 
 +
Do the connection as shown below.
 +
[[File:0 ESP32 AWS IOT DTH11 Logging.png]]
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 +
Now copy paste the below code and configure the Wifi SSID, Host Address and upload the sketch.
 +
<html>
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<script src="https://gist.github.com/SaheblalBagwan/b39e80d2b0de87731fce7a7a5f37bea4.js"></script>
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</html>
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Temp and Humidity logged to AWS IOT server.
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[[File:ESP32 AWS IOT DTH11 Logging.png]]
 +
 
 +
=Download=
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Download the Arduino ESP32 AWS IOT lib and examples form [https://github.com/ExploreEmbedded/Hornbill-Examples/tree/master/arduino-esp32/AWS_IOT this link].
 +
<br><br>
 +
 
 +
Have an opinion, suggestion , question or feedback about the article let it out here!
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{{DISQUS}}

Latest revision as of 10:14, 9 April 2018

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.

Have an opinion, suggestion , question or feedback about the article let it out here!