Book Image

Practical Python Programming for IoT

By : Gary Smart
Book Image

Practical Python Programming for IoT

By: Gary Smart

Overview of this book

The age of connected devices is here, be it fitness bands or smart homes. It's now more important than ever to understand how hardware components interact with the internet to collect and analyze user data. The Internet of Things (IoT), combined with the popular open source language Python, can be used to build powerful and intelligent IoT systems with intuitive interfaces. This book consists of three parts, with the first focusing on the "Internet" component of IoT. You'll get to grips with end-to-end IoT app development to control an LED over the internet, before learning how to build RESTful APIs, WebSocket APIs, and MQTT services in Python. The second part delves into the fundamentals behind electronics and GPIO interfacing. As you progress to the last part, you'll focus on the "Things" aspect of IoT, where you will learn how to connect and control a range of electronic sensors and actuators using Python. You'll also explore a variety of topics, such as motor control, ultrasonic sensors, and temperature measurement. Finally, you'll get up to speed with advanced IoT programming techniques in Python, integrate with IoT visualization and automation platforms, and build a comprehensive IoT project. By the end of this book, you'll be well-versed with IoT development and have the knowledge you need to build sophisticated IoT systems using Python.
Table of Contents (20 chapters)
1
Section 1: Programming with Python and the Raspberry Pi
6
Section 2: Practical Electronics for Interacting with the Physical World
9
Section 3: IoT Playground - Practical Examples to Interact with the Physical World

Connecting the stepper motor to the L293D circuit

To connect our stepper motor to our Raspberry Pi, we are going to reuse our L293D circuit, as shown in Figure 10.8 in the previous section. Here is what we need to do:

Figure 10.11 – 28BYJ-48 stepper motor wiring connection

The following steps match the numbering shown in Figure 10.11. Remember that we are starting with the circuit you completed previously in the section entitled Building the motor driver circuit and shown in Figure 10.8:

In steps 2 through 5, we will connect the stepper motor in our breadboard circuit. A suggestion is to use header pins (as pictured in Figure 10.10) to connect your motor to a run of vacant rows on your breadboard, and then connect the output wires from the L293D to the appropriate row matching the wire colors mentioned in the steps.
  1. If you have not done so already, disconnect the two DC motors from the existing circuit.
  2. Connect the orange wire...