View source for Serial Communication between the Arduino and the Raspberry Pi

= Introduction =
* The purpose of this tutorial is to teach the hardware and software requirements to establish two way communication between an Arduino and a Raspberry Pi.
* In this case study, the Arduino Uno will be used to control and collect data from sensors (e.g. temperature sensor) and also to control electronic equipment (e.g. fan or servo motor).
* The Raspberry Pi will be used to collect data from the Arduino, save the data in a text file, dweet the data and graph the data using plotly. The Raspberry pi can even host a web site to display the data.

= Equipment = 
* Arduino Uno (Sparkfun RedBoard) - any Arduino Uno is suitable
* Raspberry Pi 3B+ or Raspberry Pi 4
* USB cable that can connect the Raspberry Pi USB to the USB serial connection on the Arduino Uno.

= Hardware and Software setup for Serial =
* Firstly connect the Arduino Uno to the Raspberry Pi using the serial cable.

== Configuration of Serial software library on the Raspberry Pi ==