IoT in practice: MQTT

Name: IoT in practice: MQTT
Rating: 4.4 (37 reviews)

Mosquitto broker , Amazon Web Services IoT core, ESP32, Raspberry Pi

Created byViacheslav Kulakov

Last updated 5/2022

English

What you'll learn

You will learn what mqtt is and how it works.
You will be able to install and configure the mosquito mqtt broker on Windows PC and Raspberry Pi.
We will write a program for ESP32 that works with mosquito broker.
You will learn how to work with Amazon Web Services IoT core, most popular mqtt cloud service.
We will modify the previously written program for ESP32 so that your devices can work with AWS IoT core.
We will write the pub/sub client for Windows and Raspberry Pi
You will learn how to generate your TLS certificate and use it in your programs

Course content

3 sections • 11 lectures • 1h 42m total length

Introduction to MQTT4:58

Installation and testing of mosquitto broker on Windows8:08
Install and run the mosquitto broker on Windows, use mosquitto_pub and mosquitto_sub to publish and subscribe to topic one, and configure the IP address and listener for local access.
Writing ESP32 arduino program to connect it with mosquitto broker8:10
Adding pub/sub topics and authentification to the ESP32 programm9:32
Installation the mosquitto broker on Linux Raspberry Pi7:11
Mosquitto API: writing mosquitto client for Windows12:10
Mosquitto API: mosquitto client for Linux Raspberry Pi6:33
Adapt a mosquitto mqtt client to run on Linux Raspberry Pi by installing development libraries, building mqtt.cpp in Geany IDE, and configuring IP addresses and delays to publish and subscribe.
Mosquitto TLS: generating the certificate and keys18:25
In this lecture, I will show how to generate TLS certificate and keys. Then we will test the mosquitto broker with them.
Mosquitto TLS: attaching the certificate and keys to client PC and EPS32 program9:34
Attach certificates to Windows and Linux MQTT clients using mosquitto_tls_set and set the broker port to 8883. Update the ESP32 certificates and broker address to enable TLS and test publish.

AWS IoT core: creating thing, policy and certificate.9:21
Learn to use aws iot core as a cloud mqtt broker by creating a thing, generating a certificate, and attaching a policy with connect, subscribe, publish, and receive actions.
Connecting ESP32 devices to AWS IoT core8:24
Configure an ESP32 sketch to connect to AWS IoT Core using mqtt with certificate authentication, endpoint and port 8883, then publish and subscribe to topics via the mqtt test client.

Requirements

C/C++ (beginner)
Arduino (beginner)

Description

In this course, I will look at the main points that allow your devices to exchange messages with each other over the MQTT protocol.

First, I will tell you about the MQTT protocol itself and the basic principles of its operation, I will explain what MQTT broker is. Then we will download and install the most popular MQTT mosquito broker for Windows and learn how to configure it. First we will do it on your machine, and then through the local network. Next, we will write a program for ESP32 that allows you to communicate with mosquitto broker, connect it via WiFi and test how the program works with mosquito broker. After that, we will install the mosquitto under linux on Raspberry Pi and connect ESP32 to it. We will also write a client that works through mosquito API, which you can embed into your programs.

And then we will learn how to work with the most popular cloud service for the Internet of Things Amazon Web Services IoT core. You will learn how to connect your devices to it and create a certificate and a policy for them. Next, we will modify our program for ESP32 so that it can work with the Amazon Web Services IoT Core. Then I'll show you how you can use one certificate and policy for multiple devices.

Who this course is for:

This course could be suitable for electronics engineers or amateurs interested in the Internet of Things.

IoT in practice: MQTT

What you'll learn

Explore related topics

Course content

Введение1 lecture • 5min

Mosquitto broker8 lectures • 1hr 20min

Amazon Web Services IoT core2 lectures • 18min

Requirements

Description

Who this course is for: