Book Image

Arduino Data Communications

By : Robert Thas John
5 (1)
Book Image

Arduino Data Communications

5 (1)
By: Robert Thas John

Overview of this book

In our modern, internet-connected world, where billions of devices constantly collect and send data to systems to be stored and processed, it’s surprising how the intricacies of data transmission and storage are often overlooked in the IoT domain. With Arduino Data Communications, you'll bridge the knowledge gap and become an expert in collecting data from IoT sensors, transmitting data, and configuring your own databases. This book is an exploration of IoT’s inner workings, guiding you through the process of setting up an end-to-end system that you can employ to prototype your own IoT solutions, using easy-to-follow examples. It begins with a general overview of the Arduino ecosystem, acquainting you with various sensors and shields and unveiling the art of data collection. You’ll then explore data formats and methods to store data, both locally and on database servers. As you progress through the chapters, you’ll learn how to set up REST and MQTT infrastructure to communicate with databases and get hands-on with LoRaWAN, Ethernet, cellular, HC-12, and RS-485. The final chapters are your training ground for real-world projects, imparting the essential knowledge you need to tackle complex challenges with confidence. By the end of this Arduino book, you'll have seamlessly configured an end-to-end system, all while immersing yourself in practical scenarios that bring the world of IoT to life.
Table of Contents (20 chapters)
Part 1:Introduction to Arduino and Sensor Data
Part 2:Sending Data
Part 3: Miscellaneous Topics

Storing data

The easiest way to store data is offline, where a connection to the internet or a local network is not required. Where a small amount of data is concerned, this might be done on the memory of the device, the Electronic Erasable Programmable Read-Only Memory (EEPROM). However, we will be dealing with a lot of data, so we need to store it somewhere with a reasonable amount of space. Also, while some microcontrollers have an EEPROM, the MKR board doesn’t.

MKR boards do not have expandable storage but some shields do. The MKR ENV Shield is one of them. We will attach a micro-SD card to the MKR ENV shield and store data on it.

We store data in files. Each file has a format. One quick way of knowing what format a file is stored in is by looking at the name of the file and the extension.

In the following project, we will create a sketch that will write temperature and humidity readings to a file. To make it fun and easy to read the file, we will use the TSV format...