Summary

It is almost impossible to think of IoT without cloud platforms. In this chapter, we talked about Amazon Web Services as an example and learned how to integrate ESP32 with the AWS cloud. The first example in the chapter was an AWS-connected light sensor. We created an IoT thing on AWS IoT Core, and we configured the ESP32 application with its credentials. The light sensor sent light readings from an LDR to IoT Core over MQTT. IoT visualization was another subject of the chapter. We created an IoT rule on AWS IoT Core to forward light readings to a managed Timestream database. Grafana was the tool to visualize time-series light data. We configured a Grafana panel to read from the Timestream table and show the light values, with associated timestamps.

Voice assistants are also popular in the IoT world. Consumer products usually come with voice service integrations as an alternative method of user interface. In the last example, we discussed how to integrate an IoT sensor...