Building IoT monitoring with ESP32 and AWS

In this section, we will develop an ESP32 program to connect to Amazon AWS; we will use AWS IoT services. Our scenario is to send sensor data to AWS IoT. To perform our demo, we will complete the following steps:

• Performing hardware wiring
• Registering an IoT device
• Configuring a device security policy in AWS IoT
• Developing the ESP32 program

Next, we implement each step to build our project.

Hardware wiring

We use the DHT22 module as a sensor device for our ESP32 board. We have to use similar hardware wiring from the dhtdemo project, which you can read about in Chapter 2, Making Visual Data and Animation on an LCD.

Next, we should register our IoT device on AWS IoT.

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