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Node-RED: IoT projects with ESP32, MQTT and Docker

Name: Node-RED: IoT projects with ESP32, MQTT and Docker
Rating: 4.4 (210 reviews)

Smart Home and IoT Projects with step by step guide and all codes for download

Bestseller

Created byMarkus Edenhauser

Last updated 4/2023

English

What you'll learn

Node-RED Installation and Setup
Mosquitto MQTT Broker, Grafana and InfluxDB as well as MariaDB with Adminer
All microservices are also shown with the Docker variant.
Implementation of ESP32 projects with PlatformIO
Combination of ESP32, MQTT and Node-RED
Creating and programming your own function nodes with JavaScript
State of the Art ESP32 Programming with C++
After this course you will be able to implement your own IoT projects

Course content

16 sections • 143 lectures • 10h 3m total length

Promo1:45
About me1:00
Prerequisites1:22
Sketch, Code examples and flows1:04
The basic sketch - start of every project0:54
Making instead of lecturing1:32
Adopt a hands-on, project-based approach to Node-RED, building real IoT examples with ESP32, MQTT and Docker. See practical node usage through complete workflows, with optional background theory for later study.
Disclaimer1:48
Explore ESP32, MQTT and Docker projects with a clear disclaimer. Adapt wiring and coding, and follow safety guidelines to avoid hazards, recognizing there is no guaranteed outcome across environments.

Intro0:42
Why Docker?3:01
Get a vServer5:22
Docker Installation3:55
Docker CLI using the example of Focalboard5:09
Portainer5:37
Mosquitto Broker6:00
Install and run the mosquito broker with Docker, linking config, data, and logs folders to the container, opening port 1883, adjusting permissions, and verifying with Portainer logs.
Run Mosquitto in the Container2:59
ohmyz for more convenient terminal handling1:39
Mosquitto Broker with PW authentication6:18
Node-RED4:40
Install and run Node-RED in a Docker container. Create and mount a persistent Docker volume for Node-RED data, then deploy and back up flows.
Node-RED with authentication5:04
InfluxDB4:18
Grafana2:44
MariaDB and create a DB via CLI4:04
Explore MariaDB as a MySQL fork and install it with Docker to create databases via CLI. Use Docker exec to create database like Node-red course and access it with Adminer.
Adminer3:18
Update Docker Container2:23
Traefik as reverse proxy for SSL access11:38
SSL for Node-RED with Traefik Labels5:49
Cronjobs for backup routines3:00
Backup of Node-RED Flows via Cronjob6:13

Intro0:27
Explore Node-RED as the ideal environment for building this elephant maker and learn installation, configuration, menus, and how to find and implement all nodes for practical examples.
Separation of tasks of software and hardware2:22
First overview of flow and nodes6:06
Overwrite Payload with Function Node9:20
Process JSON4:25
Context, flow and global variables7:59
So many nodes3:11
Explore the join node in node-red, combining temperature, humidity, and air quality into one message for debugging and storing data in a database.

Intro0:48
MQTT terminology3:20
MQTT network using the example of Subscriber and Publisher6:32
Explore how MQTT works with a mosquitto broker, publish topic temperature from a DHT-20 sensor on an ESP32, and subscribe with Node-RED, CLI, and dashboards.
MQTT Topic Levels and Wildcard with CLI examples4:16
Quality of Service QoS4:30
Retained Messages2:25
Birth Death und Last Will3:32
MQTT Best Practices3:35
MQTT Explorer2:35

Intro0:53
Explore connecting microservices with node-red as the main station, configuring mqtt with the mosquito broker, connecting to Influxdb, and visualizing data in Grafana.
Broker settings and MQTT in & MQTT out3:10
Save data from Node-RED in InfluxDB7:06
First visualization of InfluxDB data in Grafana4:11
Visualize node-red temperature data in Grafana using an InfluxDB flux data source and API token; configure the data source, create a dashboard, and enable updates every five seconds in Celsius.
INSERT and SELECT with MariaDB10:30

Intro1:05
Introduce the ESP32 chip variants, including dev kit and D1 boards, and outline their advantages and disadvantages. Set up Visual Studio Code and PlatformIO to run the first WiFi sketch.
Recommendation VS Code with PlatformIO4:24
LED Blink without delay4:55
Program an ESP32 to blink an LED without delay using millis and a previous millis timer, toggling pin 26 with a 1-second interval inside a loop.
WiFi and MQTT Connection8:13
Switch LED with MQTT8:53
Toggle a led via mqtt on esp32 using node-red by subscribing and publishing to topics, testing bidirectional communication, and handling led state with on/off messages.
Send and receive JSON9:16
Transfer source code from VS Code for Arduino IDE3:03

Intro0:52
Wiring2:24
Basic Sketch2:13
Establish wifi and mqtt connections on the ESP32, include credentials.h and topic callbacks, and implement a reconnect loop with blink without delay to enable node-red messaging.
BMP180 Temperature and barometric pressure5:40
BH1750 Light sensor3:02
Explore wiring and programming a BH1750 light sensor with an ESP32, reading lux and printing via serial. Prepare to transfer the data to node-red for IoT integration.
Transmit sensor data to Node-RED3:49
Save data in InfluxDB4:20
Visualize data in Grafana5:37
Controlling a fan with MQTT5:22
Learn to control an ESP32-driven fan via MQTT with Node-RED using inject nodes to send true/false to a fan topic, update pin 18, and handle JSON messages in code.
Control fan with hysteresis6:46
Temperature values and hysteresis2:48

Intro1:15
Visualize API data on an e-ink display and refresh hourly with an ESP32 and a Li-Po battery in deep sleep, while using Node-RED to perform HTTP requests.
Wiring2:17
PlatformIO and XIAO ESP322:37
Set up the ESP32 C3 from Seed Studio, implement a blink sketch with PlatformIO and the Arduino framework, and verify WiFi and Arduino IDE integration.
E-Ink Hello World5:23
Install the gpd2 library in the Arduino IDE, open the minimum example, configure a 2.13-inch e-ink display, and print hello world.
Align text and adjust font3:43
Convert and embed graphics4:44
Display text and graphic together3:51
Weather data REST API3:00
Use REST APIs in Node-RED3:06
JSON editing3:42
Edit and transform JSON in Node-RED with a function node, access message.payload, and build a new message containing temperature, humidity, weather, day, and date for ESP32 processing.
Formatting date and other variables7:02
ESP32 requests new data8:56
Deepsleep5:40
Calculate power consumption3:35
3D printed housing0:50

Intro1:18
Wiring3:02
CameraWebServer Example4:57
Send Picture via MQTT7:33
Display photos in Node-RED1:45
Deepsleep and motion sensor as surveillance camera3:24
Telegram Token and Node-RED implementation4:00
Configure telegram messaging in Node-RED by installing the telegram bot nodes, creating a telegram bot and API key, and wiring the sender and debug nodes to relay messages.
Save photo on server2:03
Save the latest ESP32 cam photo to the server with a write file node in Node-RED, storing it in the Docker data folder for later Telegram or email processing.
Send photo via Telegram when motion detector is triggered4:33
Integrate Telegram messaging in a Node-RED flow to notify via text and photo when the ESP32 motion detector triggers, including chat ID handling, file name, and a safe delay.

Intro1:05
Demonstrates using an rfid tag and an esp32 to trigger a time-tracking rest api, starting and stopping recordings and persisting entries to a database.
Wiring1:27
Wire the esp32 d1 mini with an rfid module on 3.3v only, using the spi pins (mosi, miso, sck), irq, gnd, and reset, with two leds to show login status.
Read RFID ID9:01
Read the RFID id from a chip with the MFRC522 library on ESP32, wiring SDA to 26 and RST to 5, extract the UID, and print it.
Connection to Node-RED3:37
Configure and transmit RFID tag data from the ESP32 to Node-RED using MQTT publish topics, set up debug nodes, and troubleshoot connection delays to ensure a single message per tag.
LED checkin checkout3:25
TimeTagger as Container with docker-compose5:45
TimeTagger Web API with HTTP Requests6:15
PUT Record via WEB API7:50
Using a Flatfile for saving checkin on server4:12
Store an RFID read entry in a flat file on the server using a Node-RED flow with ESP32 data, MQTT, and Docker, saving to time records.txt.
Send Record to WEB API9:18

Requirements

First experience with ESP32
Basic knowledge of C++ and JavaScript
First experience in the Linux world helpful
Be able to build simple circuits.

Description

For Makers and DIY enthusiasts who want to take their Internet of Things (IoT) projects into their own hands.

Welcome to my online course on Node-RED, MQTT and ESP32! Designed specifically for Makers and DIY enthusiasts, this course gives you the opportunity to take your projects to the next level by combining Node-RED, MQTT and ESP32.

Node-RED is a visual programming environment that allows projects to be created easily and intuitively without the need for in-depth programming knowledge. MQTT is a lightweight protocol for data transmission in IoT networks, with which end devices can be connected quickly and easily. The great advantage of MQTT is that transmission is possible in near real time. The ESP32 is a powerful microcontroller that is ideal for IoT projects thanks to its integrated WiFi and Bluetooth support.

In this course you will learn how to use Node-RED to control and regulate your ESP32-based projects and exchange data via MQTT. You will learn how to build your own IoT network, collect data from sensors and visualise it in real time with actual programs like InfluxDB or Grafana. You will also learn how to monitor and control your projects via the internet and retrieve data from anywhere in the world.

This course is ideal for Makers and DIY enthusiasts who want to take control of their projects and deepen their knowledge of the Internet of Things with MQTT and Node-RED. The combination of Node-RED, MQTT and ESP32 gives you the flexibility and power you need to turn your projects into reality.

What you learn:

Node-RED Installation and Setup
Mosquitto MQTT Broker, Grafana and InfluxDB as well as MariaDB with Adminer
All microservices are also shown with the Docker variant.
Implementation of ESP32 projects with PlatformIO
Combination of ESP32, MQTT and Node-RED
Creating and programming your own function nodes with JavaScript
State of the Art ESP32 Programming with C++
After this course you will be able to implement your own IoT projects

So let's get started and learn how you can create your own IoT projects!

Markus Edenhauser, MA MSc

Who this course is for:

Anyone with an interest in IoT development
All Makers who want to realise their projects themselves
Developers who are interested in being able to control their own microcontrollers via a dashboard
Anyone who wants to understand, apply and write their own practical projects with microcontrollers.

Node-RED: IoT projects with ESP32, MQTT and Docker

What you'll learn

Explore related topics

Course content

Introduction7 lectures • 9min

Install all programmes as containers21 lectures • 1hr 34min

First overview of Node-RED7 lectures • 34min

MQTT Basics9 lectures • 32min

Setup Node-RED5 lectures • 26min

Basic sketch with ESP32 for WIFI and MQTT7 lectures • 40min

Mini weather station11 lectures • 43min

Visualize weather data on the e-ink display15 lectures • 1hr

Surveillance camera with ESP32-Cam incl. Machine-Learning Node9 lectures • 33min

Time recording witht RFID und TimeTagger10 lectures • 52min

Requirements

Description

Who this course is for: