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Dr Narayanaswamy P R Iyer
Dr Narayanaswamy P R Iyer
上次活动时间: 2021-11-23

water buffalo PC150NCA

For UC3843A you will have to refer to the data sheet, link given below: https://www.ti.com/lit/ds/symlink/uc3843a.pdf?ts=1637624394197&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FUC3843A

For UC3843A, the reference output voltage is 5 V and the normal output voltage is 13.5 V.

After repairing the power supply of a big water buffalo PC150NCA, now all the parts found to be broken are replaced, but the power-on output 12V is only 4.2V. The original power supply block is UC3843B, which is not sold locally. I can only buy a UC3843A replacement . I don’t know if the low output voltage has anything to do with this (the optocoupler and the 431 voltage regulator block have also been replaced)

Attention all Controls Professors, Teaching Assistants, and Students!

The Virtual Hardware and Labs for Controls by Brian Hong is an absolute must-have from the MATLAB Central File Exchange. With the help of Simscape for physical modelling and simulation of mechatronic systems,

  • students can use the interactive experiments to teach themselves some of the concepts of control theory in a learn by doing approach.
  • professors and TA’s can use this to replace or augment actual lab work.

With tightening budgets and/or in person class restrictions this can help you transfer these vital skills to the students in a fun manner. Here is an overview of the available modules:

https://www.mathworks.com/matlabcentral/fileexchange/100064-virtual-hardware-and-labs-for-controls

If you have any questions feel free to leave a comment below and I’ll get back to you.

Sumit Tandon
Sumit Tandon
上次活动时间: 2021-11-17

Virtual Labs in Electric Circuits

Hi DLC, in case you haven't seen it already, Dr. Dennis Dahlquist and Dr. Zekeriya Aliyazicioglu recently developed a collection of Virtual Labs in Electric Circuits . Please feel free to explore and share your thoughts!

In the past 2 months, we had a lot of fun together playing in the two contests. To make future contests better and more appealing to you, we created a 1-minute survey to understand your experience.

Your feedback is critical to us. Thank you in advance and hope to see you in 2022!

Rose Li
Rose Li
上次活动时间: 2021-11-11

How to change？

With the switching power supply made by VIPER22A scheme , the 5V output always has noise, and the ripple exceeds 200MV after loading. How to change it? 1. 220VAC input, two outputs, 24V and 5V output are noisy, the ripple after 5V load is more than 200MV, 5V is connected with an LDO to 3.3V, and the measured 3.3V is also noisy, and the LDO heats up seriously. Change The LDO remains unchanged. 2. It is suspected that the load current is large, but I changed a circuit board with the same scheme and found that there is no noise. Although there are ripples, it is not very hot. 3. In addition, directly use a 5V adapter to convert to 3.3V through the same LDO. problem. How to change the device in this figure? 4. For hardware novices, the transformer will not be changed temporarily, and I hope to improve it by adjusting other devices.

After 7 weeks of fun, the MATLAB Central community 20th anniversary contests have concluded! Together, we shared the art of MATLAB and contributed to the battle against the global pandemic. See the fantastic stats below.

MATLAB Mini Hack Winners - Week 4

In Week 4, we invited the MATLAB Graphics team to help judge the entries. As the authors of the MATLAB functions used in every entry, they made sure every entry selected used a unique graphics function or technique from the other winners. Here are their choices:

1. Umbrellas by Shanshan Wang

Comment: Cool use of 'swarmchart' to make art from distributions; Only use of one of our newest graphics functions

2. Happy Sheep by Victoria

Comment: Cute!

3. Alien Giant by Jenny Bosten

Comment: Original idea, well textured, and efficient code

4. 3D Ultrasound by Adam Danz

Comment: Replicate source material very well. Effective use of lighting and material. Overall, impressive to produce this image given the limitation

5. Sunset in the Savanna by Sebastian Kraemer

Comment: Looks cool! Nice mix of 'image', 'fill' and 'scatter' commands.

6. Night Flight by Ratul Das

Comment: original; clever use of 'rectangle'

7. Lantern #2 by Tim

Comment: Nice use of 'getframe' to create a texture for 'surf' for a compelling picture

8. Geometric Design (6) by Daniel Pereira

Comment: Looks like some walls at MathWorks

9. Rosette 1313 by Alex P

Comment: Looks cool! Nice use of 'pcolor'

10. Mandelbrot contour by Sumihiro

Comment: Best use of contour!

11. Aim High by Murty PLN

Comment: Largest number of unique graphics objects for the Mini Hack (plot, patch,stairs,stem,text)

In the spirit of Mini Hack, the MATLAB Graphics team also created several cool graphs about the contest. Facing a similar space limit, I have picked only 2.

Bonus Prize Winners - Week 4

Congratulations to our 5 winners for their dual participation in the Treasure Hunt and the MATLAB Mini Hack. Yogiraj Bhagavatula, Pramod Devireddy, Devika U, FruitsLord, and Augusto Mazzei.

Lucky voters - Week 4

Congratulations to the lucky voters who cast the 12000th vote (Gordg Garin), 12500th vote (Eder Esteban Reyes), 13000th vote (Peram Balakrishna), 13500th vote (Emerson Nithiyaraj), 14000th vote(Sekar Naai), 14500th vote (Arika Amasarao), 15000th vote (Nikita Yakovlev), 15500th vote (Kesava Rao), and 16000th vote (Kundi Chandra Sekhar).

Grant Prize Winners

Finally, after validating entries and votes, we have picked the grand prize winners. We appreciate the time and effort you spent and the awesome entries you created. Huge congratulations!

1. Top 10 Authors of most voted entries

Each author will receive 5 customized T-shirts with the winning image and your name on the back of the T-shirts. You can choose the sizes and share them with your family or friends.

2. Top 10 Authors with most total votes

Top 10 contestants on the leaderboard will each get an Amazon gift card. The top 3 winners on the leaderboard will also earn special virtual badges.

  • Ciro Bermudez
  • KSSV
  • Juan Villacrés
  • Murty PLN
  • Pink_panther
  • Jenny Bosten
  • KARUPPASAMYPANDIYAN M
  • Jr
  • Adam Danz
  • Victoria

On behalf of the MATLAB Central community team, we thank you for joining our celebration of the MATLAB Central community’s 20th anniversary with us in the past 7 weeks. We hope you enjoyed these contests and look forward to seeing you in next year’s contests. Question: “What contests would you like to see next?”

In Week 3, we passed several amazing milestones! 1,000 Participants in the Treasure Hunt , 1,000 ENTRIES and 10,000 votes in the MATLAB Mini Hack , and $10,000 charity donation from both contests! I recommend you read Ned Gulley’s recent blog post , which is a fantastic summary of the contest highlights.

During the last week of this contest, we strongly encourage you to inspire your colleagues, classmates, or friends to participate by either VOTING or CREATING entries. To add some fun, we will give out a T-shirt to LUCKY voters who cast:

  • The 12000th vote
  • The 12500th vote
  • The 13000th vote
  • The 13500th vote
  • The 14000th vote
  • The 14500th vote
  • The 15000th vote
  • The 15500th vote
  • The 16000th vote

MATLAB Mini Hack Winners - Week 3

We’ve received many creative entries for our new categories. Congratulations to the winners! Each of you won a special edition T-shirt:

Greg, entry: better Christmas tree , category: Holidays

Ratul Das, entry: To All Pepperoni Lovers , category: Food

Peter Stampfli, entry: Louis V , category: Fractals

Adrien Leygue, entry: Stained Glass membrane , category: MathWorks Logo

Spencer Miesner, entry: ~Breathe~ , category: Album Cover

Stewart Thomas, entry: The only QR code you ever need , category: Black & White

Sebastian Kraemer, entry: sun , category: 3D

Jenny Bosten, entry: The joys of spring , category: Plant

Adam Danz, entry: MATropolis rooftop view , category: Illustration

Eric Ogier, entry: UFO , category: Fun

Simon Thor, entry: Mandelbrot in 52 characters , category: Concise

Tim, entry: Low Tide , category: Realism

Bonus Prize Winners - Week 3

We are giving out additional giveaways to participants of both the Treasure Hunt and the MATLAB Mini Hack . Congratulations to our 5 winners. Each of you has also won a special edition T-shirt.

  • Teodo
  • Dyuman Joshi
  • Shanshan Wang
  • Nirvik Sinha
  • Felipe Torres

Week 4

After the contest ends, we need additional time to validate entries for Grand Prize and Weekly Prize. The winners are expected to be announced within a couple of days after the contest ends. Thank you in advance for your patience.

Mariola Camacho Lie
Mariola Camacho Lie
上次活动时间: 2021-10-23

Problemas in Cody Area

I already solved some problems in Cody, why does he not increase my points or allow me to earn badges?

In Week 2, the contest entered a new phase – the voting started! As of today, 6000+ votes have been cast on almost 1000 entries in the GALLERY! As a result, YOU raised $5000+ for Direct Relief in addition to the $2400 raised via the Treasure Hunt contest! We encourage you to continue sharing the contest to inspire others to participate by either voting or creating new entries so we can donate even more!

MATLAB Mini Hack Winners - Week 2

I won’t say judging is getting easier in Week 2 - amazing entries keep coming in every day. Congratulations to the winners! Each of you has won a special edition T-shirt.

Bonus Prize Winners - Week 2

We are giving out additional giveaways to participants of both the Treasure Hunt and the MATLAB Mini Hack . Congratulations to our 5 winners. Each of you has also won a special edition T-shirt.

  • Simon Thor
  • Eric Ogier
  • David Hill
  • Lyes Demri
  • Highphi

What’s new in Week 3?

In Week 3, we will add several new categories in which we hope to see more creative entries:

  • Holidays
  • Album covers
  • Food & Drinks
  • MathWorks logo
  • Fractals

Hi Distance Learning Community members, if you are looking for content in Descriptive Statistics and Probability Distributions for teaching in a course or just brushing up on the concepts yourself, check out these Live Scripts developed by Dr. Ward Nickle from Humboldt State University. If you are interested, this material is also available in Japanese . Enjoy and looking forward to hearing your thoughts!!

In just one week, 500+ amazing entries were created. Math rocks and you rock!

Help us show the world the beauty of mathematics by sharing your work with your friends, classmates, or colleagues. You can also help fight the global pandemic by voting. For each vote, MathWorks will donate $1 to Direct Relief. See the Voting FAQs below for details.

MATLAB Mini Hack Winners - Week 1

Let’s start by saying: your awesome work made our judging VERY HARD! We came up with several categories with one winner each. Congratulations to the winners! Each of you won a special edition T-shirt:

Bonus Prize Winners - Week 1

As we announced last week, we are giving additional giveaways to participants of both the Treasure Hunt contest and the MATLAB Mini Hack contest . Congratulations to our 5 winners. Each of you also won a special edition T-shirt

  • Jan Orwat
  • warnerchang
  • Davide OLIVIERI
  • Daniel Niblett
  • KARUPPASAMYPANDIYAN M

Voting FAQs:

Q1: Who can vote?

Anyone with a MathWorks account can vote.

Q2: How many times can I vote?

There here is no limit to the number of votes you can cast. Vote for as many entries as you like (one vote per entry).

Q3: How do my votes increase MathWorks’ charity donation?

For every vote an entry gets, we will donate $1 to Direct Relief with a maximum amount of $20 donated per entry. MathWorks will donate up to a maximum of $20,000 based on the combined totals raised by task participation in the Treasure Hunt and voting in the MATLAB Mini Hack .

Q4. How do I win?

At the end of the contest, the top 10 participants on the leaderboard will each get an Amazon gift card and the top 3 will earn special badges. The 10 highest voted entries will win 5 customized T-shirts. See the full contest details.

Every week, we will also award surprise prizes for more fun.

Note that MathWorks staff are NOT eligible for prizes.

Q5: How do votes on my entries determine my rank on the leaderboard?

The total number of votes on ALL of your entries determines your rank on the leaderboard.

Q6: Do votes on remixed entries add votes to the original entry?

No. We count only direct votes on an entry.

Q7: Is the code (also) automatically compared to earlier submissions to determine the remix tree?

No. You have to remix an entry.

Just in 2 days since the contest started, we already have 200+ awesome entries in the MATLAB Mini Hack contests. We are excited to see so many talented and creative community members enjoying the contest and learning from each other.

If you haven’t created your entry, try remixing an entry you like. Make some SMALL changes and see what it would look like. Remix is highly encouraged in this contest.

If you haven’t entered the Treasure Hunt contest, give it a try. Your participation will not only win you a prize but also bump up MathWorks’ donation to a charity organization that fights the global pandemic.

Reminder:

  • Voting will start next Monday.
  • Weekly surprise giveaways will also be announced next Monday. Still time left to create your entries, original or remixed!

As part of MATLAB Central’s 20 year anniversary celebration, we created the MATLAB Mini Hack . The contest starts today on Oct. 4th!

What to do?

Generate an interesting image using up to 280 characters of MATLAB code.

Who can play?

Participants across all skill levels are welcome. Create original entries of your own code, remix others’ entries and make them your own, or simply vote on ENTRIES you love!

How to win prizes?

Those at the top of the leaderboard at the end of the contest will win up to $300 Amazon gift cards, 5 customized T-shirts, or special badges. Visit the prizes section on the contest page for more information.

To add more fun, we will award RANDOM PRIZES that every participant has a chance to win.

  • Each week, we will pick 5 players who participate in both the Treasure Hunt and MATLAB Mini Hack .
  • Each week, we will have different surprise giveaways.

Important Notes

  • The first week (Oct. 4th, 2021 ~ Oct. 10th 2021) is for creating entries only. Voting starts on Week 2.
  • Make sure you follow the contests (click the ‘follow the contests’ button on the top) to get notified when prizes are awarded and of other important announcements. We hope you are the winner!
I need to put a number of problems on MATLAB cody under same Problem group, as many other people have done.
Can anyone please help me on this.

Several educators worldwide use MATLAB Grader to scale assessments and automatically grade MATLAB coding assignments. MATLAB Grader can be used in any learning environment, for both formative assessments with automated feedback and summative assessments, such as quizzes and exams.

Educators often revise and update their MATLAB Grader problems. They may sometimes want to revisit a past version of a problem, such as to debug an assessment test error. Instructor users can now browse the version history for a specific problem and see draft and final versions.

Note that the versions are read-only and rollback is not supported at this time. However, you can copy code or descriptions and update the problem accordingly.

Get started with MATLAB Grader. If you are new to it, watch the MATLAB Grader Overview video and try the interactive Teaching with MATLAB online course (Section 6 is about MATLAB Grader).

Join our celebration of the 20th anniversary of MATLAB Central community! You are invited to enter 2 contests - A Treasure Hunt and a MATLAB Mini Hack - to have fun and win prizes.

How to Play

  • In the Treasure Hunt, complete 10 fun tasks to explore the ‘treasures’ in the community.
  • In the MATLAB Mini Hack, use up to 280 characters of MATLAB code to generate an interesting image. Simply vote for the entries that you like or share your own entries to gain votes.

Prizes

You will have opportunities to win compelling prizes, including special edition T-shirts, customized T-shirts, Amazon gift cards, and virtual badges. Your participation will also bump up our charity donations.

Ready to participate?

Visit the community contests space and choose the contest you’d like to enter. Note that:

  • You need a MathWorks account to participate. If you don’t have a MathWorks account, you can create one at MathWorks sign in .
  • Make sure you follow the contests (click the ‘follow the contests’ button on the top) to get notified for prize information and important announcements.

For the full contest rules, prizes, and terms, see details here .

We hope you enjoy the contests and win big prizes. NOW, LET THE CELEBRATION BEGIN!

MATLAB Mobile makes it convenient to learn and teach in disciplines requiring computational thinking, such as mathematics, science, and engineering. It can also be used for virtual labs by acquiring smartphone sensor data. As an instructor, you can author examples in MATLAB and demonstrate them on your smartphone or tablet. Students can follow along on their mobile device or tablet to instantly connect results to the concepts they are learning. This is especially relevant for distance learning, where some students may have limited or no access to a full-fledged computer.

Educators make their course material more interactive, promote self-directed learning, and increase student engagement through Live Editor. You can now run and edit live scripts on iOS and Android devices.

Get MATLAB Mobile on the Play Store or App Store, or learn how to teach using Live Scripts.

Hello! I am a 3rd year mechanical engineering student from IIT Ropar. We are participating in EBAJA 2022. I thank Mathworks for providing the customisable vehicle template https://www.mathworks.com/matlabcentral/fileexchange/79484-simscape-vehicle-templates

I have learnt to customise the models parameters of Bus, Sedan, Trucks, etc using the UI provided. However the vehicle models does not include the BAJA ATV in it which we required the most for the animations and simulation results. I needed some assistance for replacing the given vehicle model with a BAJA ATV.

-Tushar Raut LinkedIn: https://www.linkedin.com/in/tushar-raut-73ba75194/