Introduction

Embark on a journey into home automation as we delve into the intricacies of connecting an ESP32 to AWS using Smowcode. In this comprehensive tutorial, we'll guide you through the process of setting up an AWS IoT project, configuring Wi-Fi connections, and implementing MQTT for seamless home automation.

Apparatus

To get started, gather the following components:

ESP32 microcontroller
AWS IoT account
Capacitive touch sensor
LED (connected to pin 2 of ESP32)

Procedure

AWS IoT Configuration

Log in to your AWS account and navigate to IoT Core.
Create a single thing and name it "home automation."
Skip certificate creation for simplicity.
Copy the endpoint for later use in Smowcode Studio.

Setting up Smowcode Flow

Configure the Wi-Fi connection in Smowcode Studio using the Wi-Fi start node.
Specify Wi-Fi SSID and password.
Establish an MQTT connection by configuring the MQTT connection node with the copied endpoint.

ESP32 as MQTT Subscriber

Use the MQTT subscribe node to make ESP32 act as a subscriber.
Specify the topic as "move" and receive messages with success flags.

Displaying and Controlling LED

Display the received messages using the display node.
Extract LED data from the JSON message using a JSON get node.
Connect to a right node to control the LED on pin 2 based on the extracted data.

Saving and Uploading the Flow

Save, verify, and upload the Smowcode flow to the ESP32 microcontroller.

Testing on AWS

Visit AWS IoT test client and publish a message with the topic "move" and LED value.
Observe the glowing LED on the ESP32 as it successfully subscribes to and displays the published data.

Conclusion

Congratulations! You've successfully implemented home automation using AWS, ESP32, and Smowcode. This tutorial provides a step-by-step guide for seamless integration, offering a valuable skill set for IoT enthusiasts. Experiment, innovate, and enjoy the convenience of automated home control. Happy automating!