Summary

In this chapter, we explored how to develop a low-cost air quality monitoring system using DHT11, MQ-135, and the WeMos D1 Mini development board. We set up the Thing, which involved creating cloud variables, associating the device, configuring the network, and coding the development board. Later, we created a dashboard to visualize the Thing’s sensor readings with different types of widgets, displaying the current readings as well as historical data with the help of graphs. Through this project, you will get the confidence to set up the Thing practically and deploy it in the field using a PCB. You have learned about new types of cloud variables for sensor readings and storage, as well as dealing with different types of dashboard widgets.

In the next chapter, we will study GSM technology for IoT. We will learn about different types of global IoT SIM cards and their usage. This project will also demonstrate a Smart Assets tracing example, where we will track the asset...