Sensors that are connected to Arduino produce lots of analog and digital data. Analog sensors produce data points as numerical information while digital sensors produce Boolean values, that is, 1 (on) or 0 (off). Until now, we printed this data as a string on the command prompt or displayed it in a GUI. The data was being printed in real time and it was not being saved for any further analysis. Instead of using the string format, if the data is printed as a plot or graph, it will provide useful information for us to rapidly understand it and derive conclusions. Plots are even more useful for real-time applications as they can provide information regarding the system's behavior for better understanding of the data.

This chapter is organized around two major sections: storing the Arduino sensor data and plotting this data. We will start by creating and manipulating files using Python. After that, we will work with methods for storing Arduino data...