Book Image

Getting Started with Python for the Internet of Things

By : Tim Cox, Steven Lawrence Fernandes, Sai Yamanoor, Srihari Yamanoor, Prof. Diwakar Vaish
Book Image

Getting Started with Python for the Internet of Things

By: Tim Cox, Steven Lawrence Fernandes, Sai Yamanoor, Srihari Yamanoor, Prof. Diwakar Vaish

Overview of this book

This Learning Path takes you on a journey in the world of robotics and teaches you all that you can achieve with Raspberry Pi and Python. It teaches you to harness the power of Python with the Raspberry Pi 3 and the Raspberry Pi zero to build superlative automation systems that can transform your business. You will learn to create text classifiers, predict sentiment in words, and develop applications with the Tkinter library. Things will get more interesting when you build a human face detection and recognition system and a home automation system in Python, where different appliances are controlled using the Raspberry Pi. With such diverse robotics projects, you'll grasp the basics of robotics and its functions, and understand the integration of robotics with the IoT environment. By the end of this Learning Path, you will have covered everything from configuring a robotic controller, to creating a self-driven robotic vehicle using Python. • Raspberry Pi 3 Cookbook for Python Programmers - Third Edition by Tim Cox, Dr. Steven Lawrence Fernandes • Python Programming with Raspberry Pi by Sai Yamanoor, Srihari Yamanoor • Python Robotics Projects by Prof. Diwakar Vaish
Table of Contents (37 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

UART – serial port


Universal Asynchronous Receiver/Transmitter (UART), a serial port, is a communication interface where the data is transmitted serially in bits from a sensor to the host computer. Using a serial port is one of the oldest forms of communication protocol. It is used in data logging where microcontrollers collect data from sensors and transmit the data via a serial port. There are also sensors that transmit data via serial communication as responses to incoming commands.

We will not go into the theory behind serial port communications (there's plenty of theory available on the Web at https://en.wikipedia.org/wiki/Universal_asynchronous_receiver/transmitter). We will be discussing the use of the serial port to interface different sensors with the Raspberry Pi.

Raspberry Pi Zero's UART port

Typically, UART ports consist of a receiver (Rx) and a transmitter (Tx) pin that receive and transmit data. The Raspberry Pi's GPIO header comes with an UART port. The GPIO pins 14 (the Tx pin...