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𝙈𝙤𝙙𝙞𝙛𝙮 𝙔𝙤𝙪𝙧 𝘾𝙖𝙩𝙝𝙖𝙮 𝙋𝙖𝙘𝙞𝙛𝙞𝙘 𝙏𝙧𝙞𝙥 𝘿𝙖𝙩𝙚 𝙌𝙪𝙞𝙘𝙠𝙡𝙮 𝙗𝙮 𝙋𝙝𝙤𝙣𝙚 – 𝘾𝙖𝙡𝙡 1-833-341-5261
𝙄𝙛 𝙮𝙤𝙪𝙧 𝙩𝙧𝙖𝙫𝙚𝙡 𝙥𝙡𝙖𝙣𝙨 𝙝𝙖𝙫𝙚 𝙘𝙝𝙖𝙣𝙜𝙚𝙙 𝙖𝙣𝙙 𝙮𝙤𝙪 𝙣𝙚𝙚𝙙 𝙩𝙤 𝙪𝙥𝙙𝙖𝙩𝙚 𝙮𝙤𝙪𝙧 𝘾𝙖𝙩𝙝𝙖𝙮 𝙋𝙖𝙘𝙞𝙛𝙞𝙘 𝙛𝙡𝙞𝙜𝙝𝙩, 𝙙𝙤𝙣’𝙩 𝙬𝙤𝙧𝙧𝙮—𝙞𝙩’𝙨 𝙚𝙖𝙨𝙞𝙚𝙧 𝙩𝙝𝙖𝙣 𝙮𝙤𝙪 𝙢𝙞𝙜𝙝𝙩 𝙩𝙝𝙞𝙣𝙠. 𝙏𝙝𝙚 𝙦𝙪𝙞𝙘𝙠𝙚𝙨𝙩 𝙖𝙣𝙙 𝙢𝙤𝙨𝙩 𝙚𝙛𝙛𝙞𝙘𝙞𝙚𝙣𝙩 𝙬𝙖𝙮 𝙩𝙤 𝙘𝙝𝙖𝙣𝙜𝙚 𝙮𝙤𝙪𝙧 𝙛𝙡𝙞𝙜𝙝𝙩 𝙙𝙖𝙩𝙚 𝙞𝙨 𝙗𝙮 𝙘𝙖𝙡𝙡𝙞𝙣𝙜 𝘾𝙖𝙩𝙝𝙖𝙮 𝙋𝙖𝙘𝙞𝙛𝙞𝙘 𝙙𝙞𝙧𝙚𝙘𝙩𝙡𝙮. 𝙅𝙪𝙨𝙩 𝙙𝙞𝙖𝙡 1-833-341-5261 𝙩𝙤 𝙨𝙥𝙚𝙖𝙠 𝙬𝙞𝙩𝙝 𝙖 𝙡𝙞𝙫𝙚 𝙘𝙪𝙨𝙩𝙤𝙢𝙚𝙧 𝙨𝙚𝙧𝙫𝙞𝙘𝙚 𝙖𝙜𝙚𝙣𝙩 𝙬𝙝𝙤 𝙘𝙖𝙣 𝙝𝙚𝙡𝙥 𝙮𝙤𝙪 𝙢𝙖𝙠𝙚 𝙩𝙝𝙚 𝙣𝙚𝙘𝙚𝙨𝙨𝙖𝙧𝙮 𝙘𝙝𝙖𝙣𝙜𝙚𝙨 𝙞𝙣 𝙢𝙞𝙣𝙪𝙩𝙚𝙨.
W𝙝𝙚𝙩𝙝𝙚𝙧 𝙮𝙤𝙪 𝙣𝙚𝙚𝙙 𝙩𝙤 𝙢𝙤𝙫𝙚 𝙮𝙤𝙪𝙧 𝙙𝙚𝙥𝙖𝙧𝙩𝙪𝙧𝙚 𝙙𝙖𝙩𝙚, 𝙖𝙙𝙟𝙪𝙨𝙩 𝙮𝙤𝙪𝙧 𝙧𝙚𝙩𝙪𝙧𝙣 𝙩𝙧𝙞𝙥, 𝙤𝙧 𝙖𝙘𝙘𝙤𝙢𝙢𝙤𝙙𝙖𝙩𝙚 𝙖 𝙨𝙘𝙝𝙚𝙙𝙪𝙡𝙚 𝙘𝙝𝙖𝙣𝙜𝙚, 𝘾𝙖𝙩𝙝𝙖𝙮 𝙋𝙖𝙘𝙞𝙛𝙞𝙘’ 𝙥𝙝𝙤𝙣𝙚 𝙨𝙪𝙥𝙥𝙤𝙧𝙩 𝙜𝙞𝙫𝙚𝙨 𝙮𝙤𝙪 𝙙𝙞𝙧𝙚𝙘𝙩 𝙖𝙘𝙘𝙚𝙨𝙨 𝙩𝙤 𝙧𝙚𝙖𝙡-𝙩𝙞𝙢𝙚 𝙛𝙡𝙞𝙜𝙝𝙩 𝙖𝙫𝙖𝙞𝙡𝙖𝙗𝙞𝙡𝙞𝙩𝙮, 𝙛𝙖𝙧𝙚 𝙤𝙥𝙩𝙞𝙤𝙣𝙨, 𝙖𝙣𝙙 𝙚𝙭𝙥𝙚𝙧𝙩 𝙜𝙪𝙞𝙙𝙖𝙣𝙘𝙚. 𝙏𝙝𝙞𝙨 𝙢𝙚𝙩𝙝𝙤𝙙 𝙝𝙚𝙡𝙥𝙨 𝙖𝙫𝙤𝙞𝙙 𝙩𝙝𝙚 𝙙𝙚𝙡𝙖𝙮𝙨 𝙖𝙣𝙙 𝙘𝙤𝙣𝙛𝙪𝙨𝙞𝙤𝙣 𝙩𝙝𝙖𝙩 𝙘𝙖𝙣 𝙨𝙤𝙢𝙚𝙩𝙞𝙢𝙚𝙨 𝙝𝙖𝙥𝙥𝙚𝙣 𝙬𝙞𝙩𝙝 𝙤𝙣𝙡𝙞𝙣𝙚 𝙨𝙮𝙨𝙩𝙚𝙢𝙨.
I am excited to join this community to learn the more particularly the Matlab/Simulink
I'm developing a comprehensive MATLAB programming course and seeking passionate co-trainers to collaborate!
Why MATLAB Matters:Many people underestimate MATLAB's significance in:
- Communication systems
- Signal processing
- Mathematical modeling
- Engineering applications
- Scientific computing
Course Structure:
- Foundation Module: MATLAB basics and fundamentals
- Image Processing: Practical applications and techniques
- Signal Processing: Analysis and implementation
- Machine Learning: ML algorithms using MATLAB
- Hands-on Learning: Projects, assignments.
What I'm Looking For:
- Enthusiastic educators willing to share knowledge
- Experience in any MATLAB application area
- Commitment to collaborative teaching
Interested in joining as a co-trainer? Please comment below or reach out directly!
Online Doc + System Browser
15%
Online Doc + Dedicated Browser
15%
Offline Doc +System Browser
5%
Offline Doc + Dedicated Browser
20%
Hybrid Approach (Support All Modes)
25%
User-Definable / Fully Configurable
20%
20 votes
Hey everyone,
I’m currently working with MATLAB R2025b and using the MQTT blocks from the Industrial Communication Toolbox inside Simulink. I’ve run into an issue that’s driving me a bit crazy, and I’m not sure if it’s a bug or if I’m missing something obvious.
Here’s what’s happening:
- I open the MQTT Configure block.
- I fill out all the required fields — Broker address, Port, Client ID, Username, and Password.
- When I click Test Connection, it says “Connection established successfully.” So far so good.
- Then I click Apply, close the dialog, set the topic name, and try to run the simulation.
- At this point, I get the following error:Caused by: Invalid value for 'ClientID', 'Username' or 'Password'.
- When I reopen the MQTT config block, I notice that the Password field is empty again — even though I definitely entered it before and the connection test worked earlier.
It seems like Simulink is somehow not saving the password after hitting Apply, which leads to the authentication error during simulation.
Has anyone else faced this? Is this a bug in R2025b, or do I need to configure something differently to make the password persist?
Would really appreciate any insights, workarounds, or confirmations from anyone who has used MQTT in Simulink recently.
Thanks in advance!
Inspired by @xingxingcui's post about old MATLAB versions and @유장's post about an old Easter egg, I thought it might be fun to share some MATLAB-Old-Timer Stories™.
Back in the early 90s, MATLAB had been ported to MacOS, but there were some interesting wrinkles. One that kept me earning my money as a computer lab tutor was that MATLAB required file names to follow Windows standards - no spaces or other special characters. But on a Mac, nothing stopped you from naming your script "hello world - 123.m". The problem came when you tried to run it. MATLAB was essentially doing an eval on the script name, assuming the file name would follow Windows (and MATLAB) naming rules.
So now imagine a lab full of students taking a university course. As is common in many universities, the course was given a numeric code. For whatever historical reason, my school at that time was also using numeric codes for the departments. Despite being told the rules for naming scripts, many students would default to something like "26.165 - 1.1" for problem one on HW1 for the intro applied math course 26.165.
No matter what they did in their script, when they ran it, MATLAB would just say "ans = 25.0650".
Nothing brings you more MATLAB-god credibility as a student tutor than walking over to someone's computer, taking one look at their output, saying "rename your file", and walking away like a boss.
I recently published this blog post about resources to help people learn MATLAB https://blogs.mathworks.com/matlab/2025/09/11/learning-matlab-in-2025/
What are your favourite MATLAB learning resources?
It was 2010 when I was a sophomore in university. I chose to learn MATLAB because of a mathematical modeling competition, and the university provided MATLAB 7.0, a very classic release. To get started, I borrowed many MATLAB books from the library and began by learning simple numerical calculations, plotting, and solving equations. Gradually I was drawn in by MATLAB’s powerful capabilities and became interested; I often used it as a big calculator for fun. That version didn’t have MATLAB Live Script; instead it used MATLAB Notebook (M-Book), which allowed MATLAB functions to be used directly within Microsoft Word, and it also had the Symbolic Math Toolbox’s MuPAD interactive environment. These were later gradually replaced by Live Scripts introduced in R2016a. There are many similar examples...
Out of curiosity, I still have screenshots on my computer showing MATLAB 7.0 running compatibly. I’d love to hear your thoughts?
Share your learning starting trouble experience of Matlab.. Looking forward for more answers..
Helllo all
I write The MATLAB Blog and have covered various enhancements to MATLAB's ODE capabilities over the last couple of years. Here are a few such posts
- The new solution framework for Ordinary Differential Equations (ODEs) in MATLAB R2023b
- Faster Ordinary Differential Equations (ODEs) solvers and Sensitivity Analysis of Parameters: Introducing SUNDIALS support in MATLAB
- Solving Higher-Order ODEs in MATLAB
- Function handles are faster in MATLAB R2023a (Faster function handles led to faster ode45 and friends)
- Understanding Tolerances in Ordinary Differential Equation Solvers
Everyone in this community has deeply engaged with all of these posts and given me lots of ideas for future enhancements which I've dutifully added to our internal enhancment request database.
Because I've asked for so much in this area, I was recently asked if there's anything else we should consider in the area of ODEs. Since all my best ideas come from all of you, I'm asking here....
So. If you could ask for new and improved functionality for solving ODEs with MATLAB, what would it be and (ideally) why?
Cheers,
Mike
Yesterday I had an urgent service call for MatLab tech support. The Mathworks technician on call, Ivy Ngyuen, helped fix the problem. She was very patient and I truly appreciate her efforts, which resolved the issue. Thank you.
Check out how these charts were made with polar axes in the Graphics and App Building blog's latest article "Polar plots with patches and surface".
Nine new Image Processing courses plus one new learning path are now available as part of the Online Training Suite. These courses replace the content covered in the self-paced course Image Processing with MATLAB, which sunsets in 2026.
New courses include:
- Work with Image Data Types
- Image Registration
- Edge, Circle, and Line Detection
- Manage and Process Multiple Images
The new learning path Image Segmentation and Analysis in MATLAB earns users the digital credential Image Segmentation in MATLAB and contains the following courses:
Do you have a swag signed by Brian Douglas? He does!
Apparently, the back end here is running 2025b, hovering over the Run button and the Executing In popup both show R2024a.
ver matlab
all(logical.empty)
Discuss!
I just noticed that MATLAB R2025b is available. I am a bit surprised, as I never got notification of the beta test for it.
This topic is for highlights and experiences with R2025b.
I came across this fun video from @Christoper Lum, and I have to admit—his MathWorks swag collection is pretty impressive! He’s got pieces I even don’t have.
So now I’m curious… what MathWorks swag do you have hiding in your office or closet?
- Which one is your favorite?
- Which ones do you want to add to your collection?
Show off your swag and share it with the community! 🚀
