The Ultimate Node-RED Programming for Electronics DIY

Name: The Ultimate Node-RED Programming for Electronics DIY
Rating: 4.7 (9 reviews)

Design IoT Projects with Raspberry Pi, Arduino, and ESP32

Created bySophea Chun

Last updated 8/2025

English

English [Auto],

What you'll learn

Understand the basics of Node-RED, its visual programming interface, and how it simplifies IoT application development.
Learn how to install and set up Node-RED on Raspberry Pi, Arduino, and ESP32.
Explore flow-based programming concepts.
Build flows by connecting nodes to create automation logic.
Connect Raspberry Pi, Arduino, and ESP32 devices to Node-RED.
Learn how to read sensor data (e.g., temperature, humidity) and control actuators (e.g., LEDs, motors).
Understand MQTT, HTTP, and other communication protocols, Implement MQTT-based communication between devices and Node-RED.
Design interactive dashboards using Node-RED’s dashboard nodes. Display real-time data, charts, and visualizations.
Work on practical projects such as home automation, weather stations, and smart gardening systems.
By the end of the course, students will have the knowledge and hands-on experience to create their own IoT solutions using Node-RED and the mentioned hardware p

Course content

4 sections • 24 lectures • 1h 54m total length

Introduction to the Sections0:27
Explore the Raspberry Pi 4's basic specifications as the most popular single board computer used by students, hobbyists, and professional engineers. Apply this content to other Raspberry Pi models.
Raspberry Pi 4 Specifications3:33
Explore the Raspberry Pi 4 specifications, including BCM2711 B0 with Cortex A72 core at 1.5GHz, RAM options, USB 3.0/2.0, gigabit Ethernet, micro HDMI, GPIO header, and microSD storage.
Raspberry Pi External Devices2:48
Identify and gather devices for the Raspberry Pi, including a five volt three amp power supply, microSD card for the os, USB keyboard and mouse, display options, case, and cooling.
Installing the Raspberry Pi OS3:55
Install the Raspberry Pi OS on a 16 GB micro SD card with the official Raspberry Pi imager, then configure hostname, username, password, wireless, time zone, keyboard, and SSH.
Physical Setup and Power on the Raspberry Pi1:12
Connect the Raspberry Pi OS SD card, power with a USB-C supply, and attach an ethernet cable for internet, then power on; wifi is optional but not recommended.
Setting up Remote Connection to Raspberry Pi using ssh and VNC7:50
Enable remote access to a Raspberry Pi using SSH and VNC. Find the Pi's IP with Angry IP Scanner, then configure SSH and VNC, and connect via VNC viewer.

What is Node-Red?1:32
Discover how Node-RED, an open source IBM project, uses visual, node-based flows in a web browser to simplify IoT programming and connect Raspberry Pi hardware via GPIO and local networks.
Installing Node-Red from the ssh Remote Terminal CMD3:28
Install node-red on a Raspberry Pi via ssh from the terminal following official instructions, then configure settings, enable the project feature, and allow external module loading.
How to Access and Use the Node-Red Applicationc3:57
Learn how to start the Node-RED service on a Raspberry Pi, access the Node-RED web UI via SSH, VNC, or browser, and enable auto-start on boot.
Node-Red Screen Layout3:15
Navigate to the Raspberry Pi IP and port 1880 to access the Node-RED interface. Explore the node palette and categories, drag and connect nodes to build flows in the workspace.
First Flow: Node-Red Flow Hello World!2:29
Create your first Node-RED flow by wiring an inject node to a debug node to print Hello World, deploy, and set the inject node to repeat every second.
Second Flow: Print date and time on the debugging panel3:59
Print the date and time on the debug panel by wiring an inject node to a function node that outputs the current date and time at one-second intervals and deploy.
Third Flow: Convert Temperature4:23
Explore Node-RED programming to convert temperature from Fahrenheit to Celsius using inject, change, and function nodes, then visualize results with a debug node.
Node-Red Core Explainations12:23
Explore Node-RED’s core nodes on the Raspberry Pi, from the common, function, and switch nodes to storage and network nodes, then install a dashboard node.
Understanding Node-Red

Raspberry Pi GPIOs Pin4:17
Access external devices from Node-RED flow programs on the Raspberry Pi by using the 40-pin GPIO header, its 3.3-volt bidirectional pins, and multi-function I2C, SPI, and UART capabilities.
Flashing LED ON/OFF from Node-red Flow7:19
Connect a LED to the Raspberry Pi with a 200–500 ohm resistor on a breadboard, then blink it using a Node-RED flow with GPIO out pin 4.
Flashing LED ON/OFF using the trigger Node3:16
Learn to flash a Raspberry Pi LED using Node-RED with an inject node triggering a one-second wait and a gpio output node on pin 4 to create an on-off LED sequence.
Flashing LEDs ON/OFF alternatively using the trigger Node3:36
Add a second LED to the Raspberry Pi, wire the resistor to ground and GPIO 17, and use Node-RED trigger nodes to flash two LEDs alternately with a one-second delay.
Another way To toggle LED using Function Node write JavaScripts4:08
Blink an LED in Node-RED using a function node and a context variable, replacing the trigger node; build flow with inject and gpio out to toggle GPIO 4.
Controll LED using Push Button input switch with Node-Red Raspberry Pi GPIO7:51
Control an LED with a push button on a Raspberry Pi using Node-RED, wiring GPIO4 as input and GPIO17 as output, with a pull-down resistor and debounce.
DHT11 Temperature Raspberry Pi Node-Red6:48
Connect a DHT11 sensor to the Raspberry Pi GPIO and monitor temperature and humidity in Node-RED using a 3.3V supply and BCM GPIO data every five seconds.

First project with the node-red dashboard11:59
Set up the Node-RED dashboard on a Raspberry Pi, connect a DHT11 to GPIO4, and display temperature on a gauge and humidity on a chart every five seconds.
Connecting the node-red switch and Button to control LEDs6:23
Control leds from a node-red dashboard using on/off buttons and a switch. Wire gpio 17 and 18 on a Raspberry Pi and organize them under a bedroom lighting device tab.
Dashboard Layout Designing3:33
Organize sensors and lighting into groups, rename dashboard, and toggle UI elements like the title bar and menu; customize color, theme, and font, and access it on the local network.

Requirements

Some familiarity with Raspberry Pi, Arduino, or ESP32 boards is beneficial.
If students are new to these platforms, they can start with basic tutorials to understand their components and usage.
A basic understanding of Internet of Things (IoT) principles will be useful.
While no prior experience with Node-RED is required, students should be open to learning a visual programming approach.
Basic knowledge of connecting components (sensors, LEDs, etc.) to these boards is essential.
Enthusiasm for hands-on learning and building real-world IoT applications is key.
Curiosity and a willingness to explore different project ideas are encouraged!
This course is designed to guide beginners through the process, so even if students don’t meet all prerequisites, their curiosity and willingness to learn will go a long way!

Description

Certainly! In the course titled “Node-RED Programming: Design IoT Projects with Raspberry Pi” students will embark on an exciting journey into the world of Internet of Things (IoT) development. Node-RED is a powerful, flow-based development tool for visual programming, perfect for IoT projects. With Node-RED, you can easily create workflows to control your devices, integrate APIs, and much more. Here’s what they’ll learn:

Introduction to Node-RED:
- Understand the fundamentals of Node-RED, a powerful visual editor for building IoT applications.
- Set up Node-RED on Raspberry Pi.
Flow-Based Programming:
- Explore flow-based programming concepts.
- Create automation logic by connecting nodes within Node-RED.
Device Integration:
- Connect sensors, actuators, and devices to Node-RED.
- Learn how to read data from Raspberry Pi.
IoT Protocols and Communication:
- Dive into communication protocols like MQTT and HTTP.
- Implement MQTT-based communication between devices and Node-RED.
Dashboard Creation:
- Design interactive dashboards using Node-RED’s nodes.
- Visualize real-time data, charts, and visual elements.
Advanced Topics:
- Master debugging techniques, error handling, and logging in Node-RED.
- Integrate external APIs and cloud services seamlessly.
Hands-On Projects:
- Work on practical projects such as home automation, weather stations, and more.
- Apply your skills to real-world scenarios and unleash your creativity!

By the end of this course, students will be well-equipped to build their own IoT solutions using Node-RED, Raspberry Pi. Let’s dive in and create something amazing!

Who this course is for:

Students or professionals with a background in electronics or computer science who want to learn about IoT and its applications.
Hobbyists or DIY enthusiasts who want to build their own IoT projects using Raspberry Pi, ESP32 and Arduino.
Entrepreneurs who want to explore the potential of IoT and its impact on businesses.
Engineers or developers who want to integrate IoT into their existing projects or products.
Anyone who is curious about IoT and wants to learn about this exciting and rapidly growing field.
This course is ideal for beginners who want to explore IoT development using Node-RED and popular hardware platforms like Raspberry Pi, Arduino, and ESP32. Whether you’re a hobbyist, a student, or someone curious about building practical IoT projects, this course provides a solid foundation.

The Ultimate Node-RED Programming for Electronics DIY

What you'll learn

Explore related topics

Course content

Setting up and Installing Raspberry Pi for Node-Red6 lectures • 20min

Installing Node-Red on Raspberry Pi8 lectures • 35min

Node-Red Base Raspberry Pi7 lectures • 37min

Building Interactive Dashboards with Node-RED on Raspberry Pi3 lectures • 22min

Requirements

Description

Who this course is for: