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ROBOTMAK3RS Halloween Contest Winners

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Every quarter, the ROBOTMAK3RS Community sponsors a contest. Our goal is to inspire our group members to build and program using one or more of the LEGO robotics sets. Our RLOC members carefully examine all entries and select the winners based on many factors including creativity, complexity, use of sensor input and more.

At the end of 2020, the ROBOTMAK3RS community ran a Halloween-themed contest. The winners of the contest were Vatsal Sharda (under 18) and Patrik and Simon Dober (over 18). Finalists included: Ahmad Sahar, Lukasz Brodowski, Fashkarten Inf and Jon Lazar.


In this blog, we highlight the excellent work of our youth winner to help inspire the next generation of ROBOTMAK3RS.


Vatsal Sharda is a ten-year old from Houston, Texas. He has been building and programming with MINDSTORMS since he was seven. In addition to his winning project, Vatsal has made many MINDSTORMS robots including 
EV3RSTORM, EV3 R3PTAR, EV3 Puppy, EV3 Printer, EV3 Boat and EV3 Color Sorter. Vatsal is also on a FIRST LEGO League Challenge team. Vatsal loves making toys with LEGO. Visit his YouTube Channel to see his projects. It took him four days to build and program his winning robot, Candy Dispenser.

Let's learn a bit more about his project and a bit more about him.

What inspired you to make this project? 

I follow JK Brickworks and as soon as I saw this contest from the RobotMak3rs, I remembered his candy shooter robot and that inspired me to make this. Due to COVID, I wanted to make it touchless and still give kids an option to select the candy of their choice. 

How does your robot work? 

The Candy Dispenser Robot has been designed to dispense the candies without touching the machine and provides an option to choose between Hershey's and KitKat. Each Candy slot can hold up to 4 candies, so 8 candies in total. The robot waits for a hand in front of the color sensor and stores the value. Then, when a bag is placed in front of the infrared sensor, the large motors rotate. Candy Sliders have been attached to the large motors and it pushes the candies out into the bag. I used 2 Large Motors, 2 Color Sensors and 1 Infrared Sensor. Color Sensors are used to select the candies, Infrared sensor is to detect the candy bag and Large Motors are used to dispense the candies.

Watch the video to see his robot in action.



What was something you found the most challenging about this design?  

Hershey’s and KitKat's are different size candies and hence the machine was dispensing 2 Hershey’s instead of 1. Then I made the gap to dispense the Hershey’s shorter by using 1 × 2 Lego Technic lift arm instead of 1 × 3 Lego Technic lift arm and that worked.

What advice do you have for other children trying to build a LEGO robot without instructions? 

Put your ideas on paper before you start building, use your creativity and build the robot and remember to keep improving it.

Is there anyone who inspires you or has influenced you in your robot building? 

I am inspired by JK Brickworks, Seshan Brothers, Yoshihito Isogawa, and also my friend Siddharth Agarwala.


ROBOTMAK3RS Animal Contest Winner: Menno Gorter

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Every quarter, the ROBOTMAK3RS RLOC sponsors a community contest. Last quarter, builders were challenged with the task of creating a pet, a wild animal, or an assistant for the animal.  

There were many creative entires including a dog, a snake, an ox and even a reindeer. The winning entry was an Omnispider by Menno Gorter from the Netherlands.

Menno has a long history building with LEGO robotics systems. He is most intrigued by creating movement without wheels. Hence, a large fraction of his work involves clever robots without wheels. The result is a vast collection of insects and various walkers with Menno's unique signature style to them. His work has been featured at various events including LEGO World in the Netherlands and Denmark. 

ROBOTMAK3RS RLOC interviewed Menno to learn more about his creative process and learn about how the Omnispider works.


Why did you decide to build this particular model?

It began when the ROBOTMAK3RS challenged the community to make an animal-like robot. Given my history making spiders, I took this opportunity to create a SPIKE Prime spider. The new SPIKE Prime Hub is so much lighter than previous hubs that I thought this was a good opportunity to create a new version of the Omnispider. I have built Omnispiders before.


What was your process for creating this model?

I started by experimenting what the best setup would be for a sturdy way to attach the four motors to the hub. Because these were also the strongest and sturdiest parts of the design, everything else is mounted to these five parts. The first prototype took two days to get up and running. Then it took another two days to learn from it and tweak it to create the second prototype. It took another week to fine tune the programming, especially to get the movements of the legs correct.

Besides strengthening the legs to withstand the movement of the spider, the most challenging aspect of the project was giving the Omnispider character. The goal was to give the impression that it is exploring its environment tirelessly.


How does your model work?

The Omnispider uses four PowerdUp Large Motors. Each motor drives a pair of legs in a 90-degree angle which allows the robot to move in any desired direction. On top of this, the setup makes an octagonal orientation of the legs possible, which makes the movement much more spider-like. I have also used two Ultrasonic sensors and managed to use one of the Hub buttons as a touch sensor.  The sensors are used by the Omnispider to detect obstacles in its path.

To see the spider in action, see the video on Facebook.

What advice do you have for a young person who wants to build with LEGO robots?

It may sound very simple, but, "never give up"!

You can take a look at Menno's prior work on his YouTube channel and on BrickShelf.

MINDSTORMS Robot Inventor is Now Even Better than Ever

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Great news for MINDSTORMS fans: the newest member of the LEGO MINDSTORMS family, Robot Inventor, received a significant upgrade this month. New features bring to life even more possibilities for creativity and inspiration. We sat down with Morten Svendsen and Dan Meehan, two LEGO MINDSTORMS Designers, to discuss the Robot Inventor set and chat about future plans during a recent MINDSTORMS Roundtable discussion.

The two main features added this month are the inclusion of a Community section as well as compatibility with all Powered Up motors and sensors.

New Community Section

In late 2020, we saw a quick preview of the addition of new content with the inclusion of two add-on models by community builders, Anton Vanhoucke and Anika Brandsma, from the Netherlands. Anton transformed Tricky to create a sumo-style flipping robot. Anika embellished Gelo to transform it into a pet you can interact with. These two models are great examples of how children can take the original designs in the MINDSTORMS App and enhance them by adding more LEGO brick and creating programs of their own. According to LEGO, the fan model additions from the community increase the scope and breadth of what you can do with the product.

During the Roundtable, LEGO announced that in 2021, they will bring a larger collection of curated fan models to life within the MINDSTORMS App. The most recent release includes completely new models by Sanjay and Arvind Seshan, Anika Brandsma, and Laurens Valk. Sanjay and Arvind, from the United States, have created a quick-build Melody Maker for young children to explore sound and use the color sensor in the set. The robot drives over the colored bricks and plays a tune. 

Melody Maker by Arvind and Sanjay Seshan
Sea Turtle by Anika Brandsma

  
Anika, who is well-known in the community for creating animals with LEGO MINDSTORMS, has built a brand new Sea Turtle model using Robot Inventor. The Sea Turtle moves, avoids obstacles and even reacts to colors. Finally, Laurens, a life-long space enthusiast from the Netherlands, has created his own version of an Exploration Rover. The build instructions and code can be accessed through the MINDSTORMS Robot Inventor App.

According to Dan and Morten from LEGO, the initial set of models are being created by a small group of designers known as "Day 1 Creators".  These designers, selected by LEGO, worked with company designers for a year or more to propose, develop, and finalize their robots. Additional models by selected fan community members are expected to be added into this Community section over time. These new models will continue to be moderated and have LEGO involvement to ensure diversity, consistency, and product safety.


New Capabilities and Blocks

The new update also brings with it a significant expansion of programming blocks. Now, there is full compatibility for all Powered Up motors and sensors which use the same cables as the Robot Inventor set. Users can add a new pallet of blocks by clicking on Extensions icon in the App and adding the brand new LEGO Powered Up Extension pallet. Also explore the More Sensors Extensions. You can now get raw color sensor readings as well as a new Force Sensor block.

According to Dan Meehan, with this additional capability, MINDSTORMS truly becomes a "robot inventor set". For example, now that MINDSTORMS users can connect their Boost and WeDO motors and sensors and use the dedicated blocks to bring their designs to life, we can expect to see an increase in creativity and multi-platform models. As Dan mentioned, LEGO understands that they are providing a "toolkit" to the community and are excited to see what the fans create with it.


Future Plans

Dan and Morten gave much credit to the community who were involved from the early days of product development via workshops held in Billund, Denmark. LEGO recognizes the role of fans and older builders and are very aware of the needs of the community as well as feedback they provide. MINDSTORMS builders will be excited to learn that LEGO is currently working on adding Hub-to-Hub communication. This is perhaps the most requested feature from the community since the launch of Robot Inventor in late 2020. We are looking forward to seeing this feature added as we know that multi-hub models means new and inspired ideas. LEGO also announced that they are planning to enhance the Python experienced within the MINDSTORMS App in the future.

Image Credits: Sanjay and Arvind Seshan, Anika Brandsma


New Robot Inventor Book by Daniele Benedettelli

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LEGO MINDSTORMS Robot Inventor Activity Book by Daniele Benedettelli

Review by Sanjay and Arvind Seshan, PrimeLessons

The LEGO MINDSTORMS Robot Inventor Activity Book by ROBOTMAK3R, Daniele Benedettelli, provides an excellent project-based introduction to the new LEGO MINDSTORMS set launched last year. 

The book focuses on seven interactive models: a baseball batter, a paper gobbler, a pinball machine, an electric guitar, a transformer, a turtle, and an arcade game. Each chapter is devoted to one model. Clear building instructions and code are included for each model within a chapter. All his designs use sensors and incorporate interesting features of Robot Inventor. The result is seven fun and interactive projects to inspire builders of any age.

Benedettelli's book progresses from an easy first project to more complex building and coding techniques in subsequent projects. The baseball batter is a relatively simple build. The author uses it to introduce Robot Inventor parts and the new MINDSTORMS App. This provides an easy entry point for all readers. He takes time to explain the basics of the App in this chapter. An added bonus is that the Appendix provides a helpful programming block guide for those who want an overview of all the blocks in the App.

Starting with the second project, the Gobbler, Benedettelli begins introducing more advanced programming concepts. What makes Benedettelli's book excellent is that he does a thorough job explaining the process. He includes pseudocode for the program, he explains new coding concepts, and walks the reader through the process of programming. Side "notes" provide added tips. By the end of the book, readers learn far more than basic coding. They learn to make their own my blocks, use variables, create lists, and much more.

Another good feature of his book is that he provides extensions to the basic code. Using "exercises", he asks the reader to adapt the program to add a new feature as an additional challenge. This is a great way of going beyond the book and engaging the readers to learn and do more. When showing the code, he also does an excellent job explaining how the blocks go into other blocks through the use of arrows and splitting the blocks up to show "their insides". This can be a challenge for Scratch-based coding, but Benedetti's images greatly simplify the process.

The pinball machine in Chapter 7 offers a unique experience as it uses the Robot Inventor set's box as part of the building instructions. The build instructions for this game include the box, making it easy for the reader to understand how to assemble the final build. What is nice about this project is that the author builds upon an initial design, adding further instructions to enhance the realism of the project.
The electric guitar is Benedettelli's signature model as he also created one using the LEGO MINDSTORMS EV3 in the past. His new version, made with the Robot Inventor set has a similar look and feel. Benedettelli's book offers detailed instructions on how to change the scale and notes, play chords, and more. The book also has a companion website where Benedettelli shares additional programs and tips to extend each project, including the electric guitar.

The final chapter of the book is to inspire the reader to go beyond. The author offers some tips for programming Robot Inventor in Python and how to add hub-to-hub communication. He also encourages readers to share their work in the Robot Inventor Facebook Group that was founded by Marc-Andre Bazergui and managed by members of the ROBOTMAK3RS RLOC.

Through creative models and platforms to develop coding skills, the book provides something for everyone. Overall, Benedettelli's projects are a great way for anyone to dive into LEGO MINDSTORMS Robot Inventor.  

One challenge regarding the book is that the Robot Inventor App is a moving target. LEGO tends to update features and add/change blocks relatively frequently in the early years of a product. While LEGO MINDSTORMS Robot Inventor Activity Book is accurate today, there may be new blocks and features that come out in the next year that are not in the book. Hopefully, Benedettelli will offer new editions to incorporate any future changes.

You can learn more about Daniele Benedettelli's book here.

About the Reviewers

Sanjay and Arvind have been writing lessons for MINDSTORMS and SPIKE Prime since 2014. They are the founders of EV3Lessons.com and PrimeLessons.org. They have taught 1 million students in 175 countries to build and program using LEGO Robotics platforms. They have also been technical editors for another MINDSTORMS-related book. Sanjay is currently a student at the Massachusetts Institute of Technology (MIT), where he studies Computer Science. Arvind is a high school student in Pittsburgh, PA.


Photo Credits: Amazon.com

Machine Learning Meets MINDSTORMS

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Machine Learning Extension
LEGO MINDSTORMS announced today a brand new feature that is sure to excite all users. Machine Learning Extension is coming to the software in August 2022. This will allow users to implement new applications that were not possible before. Machine Learning has become exceedingly popular in recent years with applications in all sorts of industries from robotics to financial services to climate change. Now, even the youngest of robot enthusiasts and programmers have access to the world of Machine Learning and Artificial Intelligence.

Comparing two classes
Machine Learning on MINDSTORMS will work with both images and audio. For instance, you could train your model to recognize smiles and frowns on your face and have the emotion displayed on your hub. You could train your model to recognize when a red ball is present or not or identify a particular LEGO element. You can control your robot with audio commands that use your own voice. It is exciting to see what new possibilities the Machine Learning Extension in MINDSTORMS opens up.

Up to six classes can be trained at one time and a minimum of two are needed for the model to work. It is very easy to set up these classes and collect samples. All the steps, including the training, are conducted within the App. Visual probability bars allow the user to see exactly what is going on and determine if they need to make changes.

Using Machine Learning to Identify Sad and Happy Faces

Adding Samples

Dan Meehan, Creative Design Lead said, "Being able to quickly create a Machine Learning model that makes their robot behave differently when it detects their face, or their friends, gives them the confidence to explore, understand and use machine learning in the real world. And if things don't work, they're quick to understand that maybe the model needs re-training with more samples, or they need to reposition the camera to get a better view."

By adding Machine Learning to MINDSTORMS, you can now build even smarter robots and continue your "Learning through Play" journey.

Start Your Engines

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MINDSTORMS Formula 1 Racecar

Enter the world of Formula 1 with your own MINDSTORMS Robot Inventor racecar!

Watch the video below to see Ahmad Sahar (Malaysia) build a racecar in just a few minutes. Using the elements from one set, he shapes his robot into a working racecar. He brings the car to life using the Robot Inventor App to program a remote control for the vehicle.



Now, you can build your own racecar and test it out at the next Grand Prix!


You can create many variations of this car with just one Robot Inventor set. For your inspiration, take a look at two more Formula 1 racecars created by the MINDSTORMS fan community.


Get in the zone with this Formula 1 race car on the right built by Nino Guba (USA). It features motorized drive and steering with differential, exposed engine with moving pistons, an aerodynamic design and detailing all around. Aside from being remote-controlled with the LEGO MINDSTORMS mobile app or compatible wireless controller, it is capable of full autonomous driving using the light/color sensor and the optional ultrasonic sensor for object avoidance maneuvers.  There also added play features such as the raised turntable platform and quick-release car jack while your race car is in the pit.  The race car measures 10 cm high, 38 cm long, and 19 cm wide.

 

The F1 Racer on the left is made by Dave Parker (USA)​. The car features pivoting front wheels and two rear drive motors. A key component in this model is the synchronization between the rear wheels with the front steering which enables improved turning.


 

 

 

 

 

 

 

 


Hub-to-Hub Communication Brings New Possibilities

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Hub-to-Hub Communication Brings New Possibilities to MINDSTORMS

MINDSTORMS recently added a new feature to the Robot Inventor that allows creators to connect two or more hubs together. These new programming blocks allow for new and creative multi-hub projects where one hub can communicate with another. Hub-to-hub communication opens up endless possibilities for creating remote control applications, dance companions, games, and complex animals.



Below are some inspirational projects that use two or more hubs that are created by the ROBOTMAK3RS, a global community of robot experts. You can find most of these projects in the official the MINDSTORMS App in the Community section. Both building instructions and code available for you to try out.


Dimitri Dekyvere (Belgium) and Laurens Valk (the Netherlands) use two hubs to create an engaging balancing robot with an accompanying remote control. Using the joystick, you can control the Balancing Bot with your second hub.







You may have thought that Charlie is an excellent drummer. It turns out Charlie is also an excellent dance instructor! This fun and interactive project is sure to bring a lot of smiles. Anika Brandsma (the Netherlands) recreates a Dance Class using two hubs. The human dancer holds a hub in one hand and imitates Charlie’s movements.


Get ready for a competitive, fast-paced multi-player game. Sanjay and Arvind Seshan (USA) create a quick-to-build multiplayer racing game called Color Catcher. This game allows two players to race to the color that is displayed on the hub. Players navigate their robot by using the buttons on the hub to pick a direction and then tap on the hub itself to make their robot move in that direction. The first player to successfully “catch” the color scores a point.






Always dreamed of training to become an astronaut? With the Shuttle Simulator by Nard Strijbosch (the Netherlands) you can start your journey! Nard uses two hubs to create a Shuttle Simulator that is sure to test your piloting skills. One hub serves as a shuttle and the other as the controller. The player can fly the shuttle using the controller.


If you have more than two MINDSTORMS sets, you might enjoy creating this amazing snake by Anton Vanhoucke (the Netherlands). The snake avoids obstacles and can even follow lines using a color sensor. Adding additional segments is extremely easy. Anton has put in much effort to ensure that the movement of the snake is as realistic as possible. You are sure to enjoy watching your Robot Inventor Snake slithering across the floor.


MINDSTORMS Robot Inventor Books Coming Soon

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This Fall, two new books about MINDSTORMS Robot Inventor by Barbara Bratzel and Rob Torok will be published by No Starch Press. Getting Started with LEGO MINDSTORMS and Mastering LEGO MINDSTORMS are currently available for pre-order. ROBOTMAK3RS reached out to the authors to ask them about their work.

About the Authors:

 

Barbara Bratzel is a teacher at Shady Hill School, a PreK-8th grade independent school in Cambridge, Massachusetts. She was first introduced to LEGO robotics by Professor Chris Rogers at the Center for Engineering Education and Outreach at Tufts University. For the past 25 years, she has used LEGO robotics in the classroom to teach science, math, engineering, and programming. Currently, she runs a makerspace and teaches science and coding at the Shady Hill School.

 

Rob Torok is a secondary school teacher in Tasmania, Australia. He was introduced to LEGO MINDSTORMS more than 20 years ago when he purchased the original LEGO MINDSTORMS set (9719 Robotics Invention System). He has mentored teams in RoboCup Junior, FIRST LEGO League, and the FIRST Robotics Competition. In 2015, he founded a community-led robotics group, called Devil Robotics that runs after school programs for children aged 10-18 and hosts a regional FIRST LEGO League tournament. Currently, Rob teaches Computer Science, Mathematics and Engineering Design at his school.

 

What is your motivation for writing these books and who is the intended audience?

 

Both of us are K-12 STEM teachers. As teachers, we’re constantly inspired by our students—their ingenuity, their inventiveness, and their ability to take what they’ve learned and soar! With basic coding and building skills, they can move way beyond relying on building instructions and canned programs. We wrote these books to help our readers design and build original LEGO creations, too, by providing that foundational knowledge to get them stared. We envision the books being of interest to a wide variety of readers, from children with brand-new robotics sets, to experienced LEGO builders wanting to expand their coding skills, to teachers and parents helping others learn robotics and programming.  

 


Why did you choose to write a book with Robot Inventor and not SPIKE Prime? 

 

Our initial idea was to write a SPIKE Prime book. The publisher convinced us to focus on Robot Inventor instead because it is a more widely used platform. However, we wanted to make sure that the books were useful for SPIKE Prime users as well. In fact, we have special boxes in the books to explain features that are unique to SPIKE Prime such as the force sensor. 

 
Why did you decide to write two books at the same time?  

 

Actually, we didn’t. We initially wrote one comprehensive book, which ended up being so big that the publisher split it in two. That said, we think the two volumes work well, one for beginners who need the basics without too much extra detail, and one for experienced users who are eager to tackle more advanced programming and building. 


There are many ways of learning coding, python, etc. What do you think the benefits are of using LEGO MINDSTORMS?  

  

Programming robots is a great way to learn to code. First, programming lights, motors, sounds, and sensors is generally more compelling for beginning coders than writing a program to print “Hello World.” Second, programming the robot provides immediate physical feedback about the program—you expected your robot to stop at the black line and it didn’t—in a way that encourages the programmer to re-examine the code and troubleshoot. 



The models in your books are generally simple/quick builds. Can you tell us what the motivation is behind this?  

 

There are so many step-by-step building instructions for beautiful and complex models available. Those models are wonderful, but they can also be intimidating. Users think, “I could never design something like that myself.” We want to help budding designers get started, both with simple models they could build in a few minutes, like the simple cars at the beginning of the first book, and with building principles they could apply to create their own effective and sturdy designs. 

 
What is your favorite project in each of your books and why?  

 

[Barbara] This is a little like asking a parent to pick a favorite child. There are so many projects that I like. In general, my favorites are the most open-ended ones that encourage creative solutions. For example, the last two fairy tales in the first book, Little Red Riding Hood and The Three Little Pigs, invite the reader to choose which client to help and to then engineer a device to aid them, either one based on the suggested solutions or one from their own imagination.  Similarly, the three art projects in the second book’s Ultimate Challenges chapter let the reader use the skills they learned in the book to express themselves in new and creative ways.  

 

[Rob] The first chapter of Getting Started has a project called “Moving Without Wheels”. I’ve been using variations of this challenge with students and teachers for years. I love how much fun you can have with such a simple idea and, and in this book, it’s a great demonstration of what you can do without writing any code. In Mastering LEGO MINDSTORMS, there’s a chapter that shows you how to make games that you can play on the Hub, including a Cookie Clicker-type game, a reaction timer, and a memory game. I love making robotic games for people to play and hope that this chapter inspires and supports the reader to make their own amazing creations. 



What was your inspiration for the fairy tale chapter in the Getting Started book?

 

[Barbara] In my classes, I have been basing projects on fairy tales and fables for many years. I find they are engaging for all different ages of students (and teachers, when I run workshops for educators). These stories are usually familiar to students; presenting them as engineering challenges makes the students look at them in a new way. They go from passive consumers of the stories to active participants in them. Their inventions can change the course of the story! Plus, the students build empathy by putting themselves in the characters’ shoes.   

 

The Mastering LEGO MINDSTORMS book jumps to “building better robots” and python. How do you see readers using this book compared to the Getting Started book?

 

Mastering LEGO MINDSTORMS goes beyond the entry-level programming and building techniques introduced in Getting Started. It will help readers to create better robots by showing them ways to combine what they’ve previously learned into more sophisticated and complex robots. Examples are provided in Word Blocks and Python. This book is not only for anyone who has enjoyed Getting Started and wants to continue their journey, but also for anyone who is already familiar with basic Word Blocks programming and is ready for some new challenges. 


LEGO updates their software often.  How do you plan to tackle these updates given you have a printed book?  

 

Updates are an issue! In fact, we ended up redoing most of the figures in the books at the last moment because LEGO issued a software update that included a new font. Though LEGO will make changes to the software after the books are published, we are confident that our books, which concentrate on the basics, will remain a valuable resource. 




 


All images used with permission of authors. Book cover images from No Starch Press. 



Meet the ROBOTMAK3R: Lee Magpili

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Lee Magpili is a LEGO Education Designer who lives in Billund, Denmark.  Lee was the lead model designer for the LEGO® MINDSTORMS® Education EV3 Core Set. He is also well-known for many large creations including EVan, SI3RRA, STRYD3R, Eagle and a MINDSTORMS pneumatic dress. He was also the designer for models that are part of the FIRST LEGO League game.
How did you get started building with LEGO bricks?
Mom brought LEGO to the Philippines when I was growing up. Never really stopped from there.

Which project (or projects) are you the most proud of? Why?
My favorite project is probably the LEGO® MINDSTORMS® Education EV3 Core Set. It’s kind of a dream to have something with “your name” on it. The set reflects all the work and experience in my life that led up to it.
Where do you find inspiration for new projects?
I’m a big movie buff and also really into Cartoons, Comics, Anime and robots. So if I find anything like that, I’m inspired. You can add stuff that kids make, really awesome creations from LEGO Fans and that big beautiful world that we live in. Little appreciation for beauty and the arts never hurts to fill the mind with ideas



How many iterations do you typically go through when you create your projects?
Depends on how long I have to build. It can go from one, to dozens depending on the project, you’ll know when you get it right.
Do you document your creative process? If so, how and why?
I try. I’ve recently been trying to do timelapse videos but it’s very hard to actually capture the creative process. When I sketch, it’s at least in a notebook of some sort, but for building, it’s very organic and sometimes something just comes out of nothing.
What role does failure have in your creative process?
It’s a way of learning what doesn’t work. And sometimes it tells you if you need to abandon a project. But you need to fail, to know what it feels like to succeed.
“You need to fail, to know what it feels like to succeed.”
How do you evaluate your success?
If something cool is just out there and being shown to people, it’s successful.
For students who are ready to go beyond the basics, what project would you recommend to get them motivated, without overwhelming them?
Maybe try something with multiple MINDSTORMS units, that’s always fun. But hey, we have the more advanced EV3 models, and maybe even some of the bigger Technic models to try.
Which projects and/or builders have most inspired you?
Back when I first started really getting into LEGO as an adult, I would browse the mecha sections in brickshelf.com and see some really amazing robots that got quite big, around 1m tall or so. Robots have always fascinated me and I always wanted to go big!
What’s your favourite LEGO piece?
Currently, it’s the 1 module new worm gear [27938]. It’s opened up a lot of possibilities in building smaller gearboxes for me. A lot of people might know me for using a lot of the 5×7 frames as well [64179], it’s not my favorite piece, but I use it like it is.
How do you store all your pieces?
I like to have a bit of a mish mosh, as I believe it helps the creative process. It’s like discovering something new. But I do have some stuff sorted out, like Technic pins, axles, and gears. Creatively, I believe sorting by color then by piece works best, but for some parts, its by part category or type, then into colors.
See an interview with Lee about the LEGO MINDSTORMS Education EV3 Core Set models here and more of his creations on his Flikr page.

[Original article written in LEGO Engineering. Reposted here with author's permission.]

Meet the ROBOTMAK3R: Anton

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Anton Vanhoucke is from Delft, the Netherlands. He is an online strategist at Fabrique, a strategic design agency, developing new services and communication strategies. Anton has always wanted to be an inventor and combines his love of invention with LEGO bricks. He is best known for his BB-8 as well as his vertical drawing robots. Anton is a MINDSTORMS Community Partner as well as a FIRST LEGO League coach.
How did you get started building with LEGO bricks?
I used to ask for LEGO every Christmas, as far back as I can remember. It just fascinated me the first time I saw it and I never stopped playing with it.
My very first Technic set ever was the LEGO Technic 8841 Dune Buggy. It had a working steering wheel. I still remember the sore fingers from that time because studded technics bricks required more force than today’s studless bricks. After that, I remember a Polar Helicopter (8640) and a Plane (8855). I have always been fascinated by planes, and, today, I build lasercut and 3D printed RC planes as a hobby. I even add autopilots to them so they are in fact flying robots!
As soon as I was old enough, I connected my LEGO Technic to my Mac. Using a serial port IO board, aluminum foil, wire and some old 4,5V technic motors I built drawing robots and robot arms.
When the RCX was released, I was studying Industrial Design Engineering in Delft, The Netherlands. I didn’t have the money to buy an RCX back then. With my first wage as a packaging designer, I bought an NXT2.0. I went on to developing a windows phone app for proportional steering remote control for the cars and spiders I built with that set.

Which project (or projects) are you the most proud of? Why?
BB-8 and the drawing robots. BB-8 was an extreme building and programming challenge. It was really hard. That made the realisation extra sweet. It’s also very nice that he is life size, just like in the movie. My drawing robots (vertical plotters) were also quite hard to build. I’m proud of them because they are mesmerizing to watch, and there is no end to things you can draw. I’m also proud of the drawing robot because it runs a web server on the EV3 as a user interface.
Where do you find inspiration for new projects?
It varies. Sometimes it can be a certain brick, like the banana gear, that inspires me with new possibilities. Sometimes it’s something I’m doing, like cycling, sitting on a swing, or walking. I begin to wonder how a robot would do the same movement and try to build that. And sometimes it’s a toy I’d like to have – like a remote controlled dragon. Once inspired, I start building that.
If you want to learn more about the making of Saphiro the Dragon, read about it in this NXTStep article.
How many iterations do you typically go through when you create your projects?
Eight to ten. You learn from iterations. It’s what makes LEGO fun. I found that the projects with the most iterations are the most amazing. When looking back on them, I can’t imagine how I ever arrived at those solutions. Iterations are even more fun with two. I like to build the same robot together with someone else, compare our solutions, and then go with the best.

Do you document your creative process? If so, how and why?
I try to take pictures and make videos at every iteration. They are fun to watch afterwards; all the mistakes I made that seem so obvious in retrospect. Sometimes it’s hard to remember to take pictures when I’m totally focused on the building.
What role does failure have in your creative process?
I fully expect failure the first eight times. I try to test build the most difficult parts of a new build first. For instance, Saphiro the Dragon started as wings (separately) and legs. The first four wing systems failed. And when I put them together with the legs, the legs failed under the heavy load of the wings and I had to start over with them too. But it is not a terrible thing to have a rough build. When all the hard parts are done I start to add details.
How do you evaluate your success?
The reactions from my fellow MINDSTORMS Community Partners (MCP) are really nice. But just the joy of cracking a hard mechatronics problems is usually enough for me.
For students who are ready to go beyond the basics, what project would you recommend to get them motivated, without overwhelming them?
Try ev3dev. It opens a great lot of new possibilities. I wish I had time to make more tutorials.
Which projects and/or builders have most inspired you?
Isogawa inspires me a lot. His work is often pure poetry. Laurens Valk’s books helped me lot for making the step from studded to studless building. I also like a lot of Hassenplug’s projects. My favorite model is the EV3 elephant. It’s so beautiful!
What’s your favourite building technique?
The speed at which you can make iterations is incredible. Much faster than wood or metal or 3D printing or any other building material. This is what it means to fail fast. Build something, test, see the problem (fail), and to then do another iteration.
“Fail fast, disassemble and start over.”
What’s your favourite LEGO piece?
The 5×7 frame is my favourite because it’s in the base of almost every robot. It is incredibly versatile because it’s rigid and it has holes in all directions. It allows one to build fast and sturdy. I wish the original EV3 set had more of them.
How do you store all your pieces?
I have enough pieces sorted in sorting boxes to build fast. But I don’t sort all of them. I try to find a balance.
What’s something you’ve always wanted to build that you haven’t got around to yet?
I want to make a hopping rabbit because I like quadrupeds and we have a rabbit here at home. Whenever I watch it, I wonder how its robot version would look. I haven’t seen one yet, that hops as I imagine it could.


To see more of Anton’s work, visit his YouTube Channel or his website.
[Original article written in LEGO Engineering. Reposted here with author's permission.]

MINDSTORMS Retires!

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2023 is the 25th Anniversary of the MINDSTORMS brand. For 25 years, MINDSTORMS has educated and inspired a generation of robot builders, both children and adults. Unfortunately, the LEGO Group decided to end the line on December 2022. Many ROBOTMAK3RS have been passionately involved with the development of MINDSTORMS through the MUP and MCP programs. Even with the newest Robot Inventor line, several ROBOTMAK3RS were invited to submit additional bonus models that were included in the official app. Regardless of the retirement of a major LEGO robotics product line, ROBOTMAK3RS continue to MAKE-SHARE-INSPIRE using all LEGO robotics platforms available to us.


Here is the official statement from LEGO.

Since its launch in September 1998, LEGO MINDSTORMS has been one of the core ‘Build & Code’ experiences in the company’s portfolio, carrying with it significant brand equity and becoming a stand-out experience for the early days of consumer robotics and leading to current Build & Code experiences such as SPIKE Prime, from LEGO Education’s LEGO Learning System. 

However, now having a number of priorities in LEGO Education and other Build & Code experiences, we have decided to focus our resources and future plans by redirecting our MINDSTORMS Robot Inventor team and their expertise into different areas of the business.  

This means the physical MINDSTORMS Robot Inventor product (51515) and its related elements (88016 and 88018) are to exit our portfolio from the end of 2022, whilst digital platforms – such as the LEGO MINDSTORMS Robot Inventor App – will remain live until at least the end of 2024.  

We still have strong belief in the Build & Code proposition and will continue to support it through platforms such as SPIKE Prime, and we are continuing to hold on to the trademark for the MINDSTORMS brand and assessing our future plans together with LEGO Education. 

Celebrating 25 Years of MINDSTORMS

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In celebration of the 25th Anniversary of MINDSTORMS, we take a trip through history. Special thank you to Coder Shah for compiling most of this information and sharing it on our MINDSTORMS EV3 Community Group. Some of the text and links may have been edited from his original post. Please also visit ROBOTMAK3RS Community every week as we highlight different projects all through 2023 in celebration of the anniversary.
1984 - Kjeld Kirk Kristiansen watched a TV program called "Talking Turtle", where MIT professor Seymour Papert demonstrated how children could control robot 'turtles' using LOGO, a programming language he developed.

1988 - The collaboration between MIT and LEGO resulted in LEGO TC Logo in 1988, which allowed students to control Lego models using computer commands. In the video below, Seymour Papert introduces LEGO TC Logo at an inner-city Boston public school, the Hennigan school.

1990 - LEGO TC Logo was hampered since the robots you built had to be tethered to a personal computer. Lego and MIT began to explore the concept of an intelligent brick, which could be programmed and operate independently of a computer. One of the steps along the way was the Technic Control Center sets. This allowed you to ‘program’ the robots you built by recording a sequence of actions, which could be replayed later.

1992 - As electronics became smaller, lighter and cheaper, Seymour Papert and Mitch Resnick (from MIT) envisioned an “intelligent brick”, which could be programmed, thus robots no longer needed to be connected to computers. The first prototype, the Grey Brick, was developed in 1990, which was followed by the Red Brick in 1992.

1998 - The culmination of years of research and development between LEGO and MIT, the first LEGO Mindstorms set, 9719 Robotics Invention System, is launched in 1998. In the linked video, Gaute Munch and Erik Hansen talk about the creation of LEGO MINDSTORMS. The first LEGO MINDSTORMS advertisements were seen.

1998 - LEGO 9730 Robo Sports was one of the two expansion sets available for the initial release of LEGO MINDSTOMRS. It contained parts and instructions to build sports themed robots. LEGO 9732 Extreme Creatures was the second of the two expansion sets available for the initial release of LEGO MINDSTORMS. It contained parts and instructions to build animal and creature themed robots. 
1998 - A pilot of FIRST LEGO League is created. By 2023, more than 40,000 teams would have participated in the program.
1999 - LEGO released LEGO Mindstorms RIS 1.5, set number 9747. This set featured improvements to the programming environment and documentation and added a few new pieces. LEGO also released an upgrade kit, set number 3803, so that owners of the original LEGO Mindstorms RIS could obtain the software, manuals and parts of 9747 without having to buy a new set.

LEGO MINDSTORMS set 9735, Robotics Discovery Set was also released this year. It includes a blue programmable brick named the Scout, with an integrated IR sensor, two motors, and two touch sensors. You program it by changing settings on the brick, no computer required!

1999 - MIT organized Mindfest this year. This was the first ever gathering of MINDSTORMS fans
The first Star Wars LEGO MINDSTORMS Set 9748 Droid Developer Kit was released. It came with the Micro Scout, which had a motor and a light sensor, with 7 programs built in.
2000 - LEGO released set 9731 Vision Command. You needed a computer to use the camera.

2000 - LEGO released the final expansion set for the RIS, LEGO Set No. 9736 Exploration Mars.

2000 - LEGO released set 9754, the Dark Side Developer Kit. It used the same Micro Scout found in the earlier set 9748 combined with new parts to build vehicles such as the Destroyer Droid, the AT-AT, and the Droid Starfighter.  

2001 - LEGO released the final version of the RCX-based LEGO Mindstorms sets, Set 3804 Robotics Invention System 2.0. Of note are the Pro Challenges in the bundled software, showcasing some amazing models.
2001 - LEGO released the final expansion set for the RCX-based MINDSTORMS sets, the Ultimate Builders set (LEGO Set No. 3800).
2003 - World Robot Olympiad was formally organized. In subsequent years, ROBOTMAK3RS were invited to run Expert Zone booths at WRO international finals. Talking to and inspiring students from around the world at WRO events in Qatar, Indonesia, Thailand, Costa Rica, Canada, etc. has been a highlight for the ROBOTMAK3RS.

2004 - LEGO started development of the next generation LEGO MINDSTORMS, the NXT, involving LEGO fans for the first time. A tight-knit group of secret master builders formed the MINDSTORMS User Panel (MUP) and LEGO also recruited 100 users for the MINDSTORMS Developer Program (MDP)
2006 - LEGO released MINDSTORMS NXT, LEGO set no 8527Advertisements from 2006 

2009 - LEGO released set 8547, an updated MINDSTORMS NXT set.
2013 - The third generation (or evolution) of LEGO MINDSTORMS (EV3) is launched.  The Home Edition EV3 (Set 31313) had five base models. In additional 12 bonus models created by community members were added. An alternative Education edition set (45544) was also launched for the education and competition market. Many third-party sensors were created for the EV3. In addition, you could use NXT sensors and motors with the EV3.
2018 - ROBOTMAK3RS Recognized Online Community was founded as a place for former MINDSTORMS Community Partners (MCPs) and other robotics enthusiasts to come together. It was originally going to be named the acronym MINT but the name was abandoned because in German it meant "STEM" and did not reflect as clearly on what the group actually worked with.
2018 - The 20th Anniversary of MINDSTORMS. A handful of ROBOTMAKRS were invited to exhibit robots at the LEGO House in Billund, Denmark and were featured in a documentary.

2019 - ROBOTMAK3RS met at LEGOWORLD in Denmark to highlight MINDSTORMS. One memorable event was demonstrating their robots to the owner of the LEGO Group, Kjeld Kirk Kristiansen. 

2020 - Robot Inventor (LEGO Set 51515) was launched. The electronics was not backwards compatible with previous generations of MINDSTORMS. Robot Inventor was similar to SPIKE Prime, but offered unique features including remote control blocks. Later, hub-to-hub communication and machine learning will get added. LEGO collaborates with community members to add several bonus models to their App.
2021 - LEGO MINDSTORMS EV3 is retired.
2023 - In December 2022, LEGO makes the decision to retire the MINDSTORMS product line including the new Robot Inventor set.

Articles about MINDSTORMS and its History:

MINDSTORMS Over Matter (Brothers Brick)


Image Credit: MIT Media Lab, BrickLink, the LEGO Group
 

Youth LEGO Robotics Competitions

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There are several competitions for young people that specifically focus on the use of LEGO robots. The objective of all these competitions is to give children the opportunity to learn mechanical design and programming skills. This article provides an overview of a few of the well-know competitions. Click on the links and learn more about each competition.

FIRST LEGO League Challenge is for students aged 9-14 in North America and 9-16 elsewhere. There are no age-based divisions in general, although some regions do offer divisions for regional contests. The challenge details are released around August 1 of each year. Teams of 2-10 students must design a robot that completes approximately 15 missions on a themed game table made up of LEGO-based missions. For example, the 2022 theme was called SUPERPOWERED and all the missions were related to the production, storage, and transport of energy.  When you register a team, you will be allowed to purchase a Challenge kit that includes all the LEGO you need for the missions and a Challenge mat. This is shipped from LEGO. 

Robots can be built with SPIKE Prime/Essential, Robot Inventor, or any past MINDSTORMS set. Students decide which missions they want to tackle and how they want to solve them in the 2.5 minute time limit. In FIRST LEGO League Challenge, the robot can return to a "Home" area where students can touch the robot and change out its actuators/attachments. Students are also judged on the quality of the robot and their engineering design process. In addition to the score they obtain on the missions, students must also complete an Innovation Project and a Core Values component. The season runs from August to December/January in most areas. Teams who qualify for advancement may participate in World Festival in April of each year in the USA or one of the International Opens in May or June. You can visit this page to see past seasons and winning teams, including the winners of the Virtual Open Invitational held during COVID, an event that was organized by several ROBOTMAK3RS.

FIRST LEGO League Explore (formerly known as FLL Jr) is a program for children ages 6-10. Students research topics in the given theme (same theme as Challenge) and program a model to activate using SPIKE Essential or WeDo. At an Explore Celebration event, students will explain their project and model to reviewers (not judges). Explore is not a competitive program and every team wins a prize. In 2022, Explore did pilot a new version of the program that involved an autonomous robot solving missions on a smaller mat.

World Robot Olympiad is an international competition for students from Elementary through High School (ages 8-19). Students compete in divisions based on age groups in groups of 2-3. Students complete the missions on a challenge table in the allotted time. Many teams will compete all the tasks successfully and will differentiate themselves based on speed. There is an annual theme to the contest similar to FIRST LEGO League. However, the missions on the table tend to be more abstract designs built easily from a standard kit of parts that gets reused each year. The challenge mat provided also tends to have simpler graphics with lines at right angles going to important areas that all teams make use of. Regions also print/sell their own mats (for example, the US organizer provided the mat design as a PDF in past years). Another difference is that the robot is not handled once it is launched. In addition, students must build their robot at the event in 150 minutes. There is also a Surprise Rule introduced that requires the students to re-program their robot at the event. Students can elect to compete in a more project-oriented component of WRO called Future Innovators rather than the robot component. Here, students will have to research a problem and create a solution. Students are also required to create a model/prototype using LEGO robotics in some way. The international finals are held every fall in a different country. You can visit this page to learn more and see where all the previous finals were held. The final event has a very international feel to it as teams qualify through a national tournament. In contrast, in FIRST LEGO League, majority of teams at an international event tend to be from the United States because the country is split into various regions/states to begin with and each region can send a winner to Worlds. ROBOTMAK3RS have been invited to run Expert Zones at past international final events.

RoboCup Junior offers competitions for students up to age 19 with both regional and international opportunities. There are several different categories you can compete in including line following and completing a maze. Teams of 2-4 students compete and there are no age-based divisions. Although it may sound simple, even the task of following a line can have challenges as there are obstacles (broken lines, elevations, etc.). Robot can be constructed from any robotics kit but must be primarily the work of the students (not a commercially produced robot).

MINDSTORMS Remix 1

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In honor of the 25th Anniversary of MINDSTORMS, we asked ROBOTMAK3RS to combine a LEGO set of their choice with a MINDSTORMS set. Here is what these five ROBOTMAK3RS came up with. 


MINDSTORMS Chess Assistant by Arvind Seshan.
Use machine learning and LEGO MINDSTORMS Robot Inventor to build a tool to help you learn where all the chess pieces go.

Sets used: LEGO® Iconic Chess Set (40174) and MINDSTORMS Robot Inventor (51515)

Review: I really like how the chess set base can store all the pieces underneath and that the board neatly splits in half for handy storage. The chess pieces themselves are very sturdy and well built. My only criticism is the building of the box itself. It was quite difficult to see what pieces to use and since the entire box is made mostly of thin plates, it took a lot of time and patience. I would have liked the storage area to be sliding drawers rather than having to lift the top off. However, all-in-all, it is a great set and functional. I really enjoyed mixing MINDSTORMS with the chess set for some additional playability. Watch the video below to see how the robot works.


The Great Pyramid of Giza Revealed by Dave Parker. Find out who really built this ancient pyramid.

Sets used: LEGO Architecture Great Pyramid of Giza (21058) and MINDSTORMS Robot Inventor (51515).

Review: The standard build was a little repetitive, but that's expected from Architecture. The removable pyramid facade is very cool, but under I would rather have seen removable layers of hidden tombs and treasure rooms rather than a construction scene. Watched the linked video to see this robot in action.

Grabber Machine by Anton Vanhoucke
. Grab prizes, exactly like you do on the fairground!

Sets Used: Material Handler (42144) and MINDSTORMS EV3 (31313)

Review: The Material Handler was more fun than I expected. Lots of inspiring parts in the box. With the Grabber Machine remix, I am especially proud of the grabber. It does two actions with one motor: up and down + open and close. This was hard because it had to be open going down, then close going up. But once it was back to the release point, it needed to open again, while being up. Watched the linked video to see this robot in action.

Succulent Sorter by Damien Kee. Keep your garden neat and organized with this machine.

Sets Used: LEGO Botanicals, Succulent (10309) and Mindstorms EV3 (45544)

Review: The succulents are just beautiful to look at, very well designed and I love the style of the black pots that you use to assemble them all together. It was fun to have them sliding around everywhere, but some of the bigger ones that extend out past the pot as well as the tall ones didn't fare so well and so were left out of the final project. Watch the video below.





PneumaticSort3r by Christian Becker. Color sorters are always a cool build to have at hand. But have you ever seen one that uses pneumatics?

Sets used: LEGO Technic Material Handler (42144) and MINDSTORMS EV3 (31313)

Review: I really liked the build and the pneumatics of the material handler. It's really smartly designed and has a good use for the pneumatics (without overusing it). But I think that there could have been a few more non-pneumatic functions (e.g. 2 or 3 gears to turn the crane) and the claw often doesn't work as expected because the pneumatic cylinder is stuckLEGO Technic Material Handler (42144) and MINDSTORMS EV3 (31313). Watch the linked video to see this robot in action.



Meet the ROBOTMAK3R: Anna Opsahl

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Anna Hui Opsahl is an engineering student from Norway. She is known for reverse engineering complicated LEGO models and for her MINDSTORMS droids. Anna likes to make LEGO robots from movies and television that are recognizable by kids and adults. She often builds digital models in Studio.io before she makes a physical version because this gives her a good idea of all the parts needed. When she is building them in Studio, she makes a rough instruction for herself that she can refer back to when she starts the physical build. Anna was a competitor in the first season of LEGO Masters Norway in 2021. She has won several awards at Norwegian LEGO conventions for her MINDSTORMS droids. Most recently, she was nominated in the category "Best Mechanical Creation" and won in the category "Best Star Wars" at Brickworld Chicago.

How did you get started playing with LEGO MINDSTORMS/LEGO Robots?

I have always been fascinated by LEGO robots and robotics. I love that you can build anything that you can imagine with LEGO and make it move by using motors, pneumatics, and mechanical mechanism. I think that the movement of a model gives the creation an extra dimension that I am really into.

How has MINDSTORMS/LEGO Robots impacted you?

It has challenged me to learn new things and made me want to pursue a career in robotics.

What is you favorite project? 

My favorite project until now is Star Wars Rebels Chopper. Chopper is my favorite because it has a lot of different functions and because it was my first big MINDSTORMS project.

Chopper is a 70cm tall build that can drive around on two and three legs. His body tilts when the third leg comes down. He has an arm at the body that moves and the head can spin around and wiggle a little bit from side to side. He has two arms in his head that can move in and out, together or separate from each other. Chopper also has an antenna that moves and he makes sounds. He can also be remote controlled via Bluetooth.

You can see Chopper in action here.

What are your tips for young robot builders?

My tip is to keep playing and explore the possibilities of what is possible.

What is a fun/significant LEGO-related story you would like to share?

My most significant LEGO-related story is when I got to be a part of the first season of LEGO Masters Norway. (Photo Credit: BrickNerd) The most exciting aspect of being part of LEGO Masters was to be a part of the whole production, and to meet the crew and the other competitors. The coolest thing I created on the show was probably the model where we made our creations blow up, and the one where we made different apartments that stacked on top of each other to form a giant penthouse. The most challenging part of LEGO Masters was that we had to build within the time limit. The single most challenging project was the one where we got a half guitar and make the other half such that it would tell a story.

Where can we see more of your work?

Visit Flickr or Instagram.


Meet the ROBOTMAK3R: Arvind Seshan

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ROBOTMAK3R Profile


Arvind Seshan is a college student from Pittsburgh, Pennsylvania, USA. He began building with MINDSTORMS at the age of six and has won numerous accolades for his work including winning the Champion’s Award at FIRST World Championships and having his robots displayed at events all around the world. He has taught over a million students how to build and program with LEGO MINDSTORMS and SPIKE Prime. When not working with LEGO, he is usually working on his science research which has also won international-level awards. Sometimes the two areas collide and Arvind uses MINDSTORMS in his research or uses the knowledge from his research in his MINDSTORMS projects. Arvind enjoys teaching and mentoring other students. At the Massachusetts Institute of Technology, he hopes to collaborate with the Media Lab's Lifelong Kindergarten group where MINDSTORMS and Scratch were born.

How did you get started playing with LEGO MINDSTORMS?

I owned a few small LEGO Star Wars sets such as Anakin’s Starfigher when I was younger, but what got me really interested in LEGO was the programmable aspect of MINDSTORMS. I received an NXT set when I was six years old. A few months later, I was part of a FIRST LEGO League team where I was not only building with the NXT, but programming it to solve different challenges. I continued in the FIRST LEGO League program for seven years. I also started creating my own designs outside of competitions in 2015 after meeting several adult MINDSTORMS Community Partners (MCPs) at World Maker Faire in New York. Many years later, I was invited to become an MCP!

What impact have LEGO robots had on you?

LEGO robotics has been a great way for me to explore engineering and programming skills. I attribute my interests in computer science and mechanical engineering to playing with MINDSTORMS starting at a young age. MINDSTORMS and SPIKE Prime have also been a creative outlet for me. In addition to writing lessons, I spend my spare time working on many fun projects including Tic-Tac-Toe machines, games like Connect 4, 3D Printers, and more. My goal is always to design a model that not only functions as intended, but is also aesthetically pleasing. I want to create something that others will be inspired by in the same way that MCPs once inspired me. 
You can bring so many ideas to life with LEGO bricks and a bit of code.

What inspired you to create the models in the Robot Inventor App?

My brother (Sanjay) and I have collaborated on many projects throughout the years. We have three models in the App. I will discuss two of them. 
The original Melody Maker was one of our early EV3 demonstration robots that we took to a school near Pittsburgh. Children like music and color and this project was a nice combination of the two. The EV3 version was very different but the concept of playing musical notes based on colors was the same. Melody Maker is deliberately designed to use a minimal number of bricks to capture a child’s curiosity and demonstrate the capabilities of the Robot Inventor. There is a special hidden feature in the model. If you would like to color your own musical notes on a strip of paper, you can easily adjust the height of the color sensor to have it drive over paper instead of LEGO brick. 
Color Catcher was inspired by a large multi-player game that my brother and I built many years ago to take to the MINDSTORMS booth at FIRST World Championships and World Robot Olympiad. In addition, it was taken to LEGOWORLD where it was played by the owner of the LEGO Group, Kjeld Kirk Kristiansen. Since it was so much fun to play, we wanted to make a two-player version of the game that made use of the hub-to-hub feature on Robot Inventor. Color Catcher makes use of the hub for a competitive but fun game. We use the center button light on the hub to indicate what color to go to. The left and right buttons on the hub let you change direction, and tapping on the hub itself makes the robot move forward. This makes the entire model very interactive.  

What are your tips for young robot builders?

When talking to young children, I find that they are comfortable when building with instructions but find it challenging to build on their own. Building the robots in the set is a great way to start learning how to build and program. Once you are comfortable with how the pieces fit together, try to build your own designs. You can start by simply modifying an existing build into something you want. Next, think about what type of project you want to make. A printer? A bipedal robot? A swing? A dancer? Think about what type of mechanism you might need to have. Try to prototype that mechanism first. I found that books by Yoshihito Isogawa have nuggets of inspiration in them. A lot of the mechanism can be used in other models. Remember that it might take several prototypes before you come up with the final design. My most important piece of advice is not to give up.
Whether it is science research or making something with LEGO, persistence and enjoying what you work on have been the key to success.
I have built a handful of robots from the MINDSTORMS sets but my real passion only came from using the bricks to create my own models including games and machines. It might seem like a challenge at first to not have any building instructions, but the best part of working with LEGO as your creative medium is being able to take it apart to start all over again or to improve the model. I became a better builder and programmer with each project. 

Since it is the 25th anniversary of MINDSTORMS, what is your favorite MINDSTORMS project or memory?

My favorite project would be the 4ft X 6ft Pac-Bot game that my brother and I built. It was tricky from both a mechanical and programming standpoint. On the programming side, we had to have 13 or so EV3s all networked together and displaying scores to a Raspberry Pi screen. On the mechanical side, this large board had to be modular so that it could be packed and taken to events around the world. We also wanted to make the whole system reusable for future projects. My favorite moment is playing Pac-Bot with Kjeld Kirk Kristiansen in Denmark.

Where can we learn more?

Visit PrimeLessons.org, EV3Lessons.com, and FLLTutorials.com for programming and FIRST LEGO League-specific lessons. Visit the Seshan Brothers YouTube to see videos of some of the projects I have worked on over the years.


Celebrating MINDSTORMS with a Remix - Part 2

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The ROBOTMAK3RS continued their celebration of the 25th Anniversary of MINDSTORMS through these summer and fall remix projects. Each ROBOTMAK3R was tasked with selecting one LEGO set of their choice and combining it with a MINDSTORMS set. Below are the five amazing models they came up with.

Remote controlled material handler by Jozua van Ravenhorst (aka Mr Jo)

This remix combines the LEGO Technic Material Handler (42144) with MINDSTORMS EV3 (31313) It uses the power of pneumatic cylinders to move objects around. By using a bluetooth remote control, very precise movements can be made with this model. Touch sensors in the base chassis prevent the turret twisting the cables that go through the turntable to much. The program has several protections to prevent over pressurizing the system for each of the 3 individual pumps and valves that control the 2 booms and claws. The real version of this machine is mostly used in waste material sites to bring the material to machines that sort and recycle the scrap material. This LEGO version can bring mixed Technic pins to a hopper so an other machine can sort these pieces for a circular economy. You can see the remix in action here.

Set Review: The Material Handler set was something I really enjoyed to build. I like pneumatic and complex mechanical machines, as I build/service big industrial machines for my work as well. This set met my expectations to be able to motorize it, although it was a fairly small machine with little space. The difficult part was putting the MINDSTORMS brick inside the build, as it is so big compared to the chassis. But eventually I managed to get 4 motors inside with 3 individual pumps/valves for smooth control over this great design. It offers a great playability, and I will take it to many LEGO shows so children will be able to control it and feed the other machines. I hope I can keep expanding my growing size of machines, and make them all work together, for material handling/sorting/storage and distribution.

MINDSTORMS Cake Stand by Anika Vuurzoon

In this remix, Anika combines LEGO Disney The Little Mermaid Royal Clamshell 43225 and MINDSTORMS Robot Inventor 51515. She reimagines the Disney set into a cake stand that rotates a 25th Anniversary of MINDSTORMS cake. Based on what color is shown, the stand rotates such that you can cut the desired number of cake pieces (6, 8, or 12). In addition, the cake topper (made up of two miniature models from the 51515 set) also rotate.

Set Review: The shell shape was really inventive. It was nice to see how this shape was designed and is very inspirational. You can watch the video of this model here.

LEGO Hockey by Guilherme Lima

This remix combines Robot Inventor set 51515 and LEGO set 42154. Gui's idea was based on an existing hockey game that is playable using xbox controllers. He wanted to use the panels in the LEGO set as the shooters and ball launchers.

Set Review: As a medium-sized car, it uses interesting techniques to integrate the chassis to the wheels, a new "hand of God" mechanism, good shock absorbers, and many others. Aesthetically, the white stripes have recreated the car shapes. Personally, I think that step 220 is a bit strange as it could be done with different pieces, but overall, it looks good. The new panels were really well used creating the curves and shapes that we could not do before, which is one of my favorite things in this set. As a grown-up, the car looks amazing in my room, and as a kid, I loved to play with it and see all the features this set has provided. You can learn more about this remix project here.

Blue Beetle by Nino Guba

Nino combines the LEGO Technic Ford GT (42154) and MINDSTORMS Robot Inventor (51515) set in this model. In addition, he adds two elements from the Concrete Mixer Truck 42112 as the beetle's shell.Powered by MINDSTORMS Robot Inventor, this beetle can sense when something is close, extends its wings to fly, and then crawls using its six legs to safety. Once at ease and at rest, it closes its hard wing cases back.

Set Review: The Ford GT set is a very technical and detailed build packed in relatively smaller scale than the usual Technic sports and hyper cars. A lot of the pieces are in dark blue and is very much a nice treat for those wanting to design MOCs in this color! There are also some new interesting parts on this set that surely will prove useful. Once the set is built, satisfaction is almost guaranteed for any car-enthused Technic fans.

Playing Catch By Nard Strijbosch

Nard uses two LEGO MINDSTORMS robots to play catch with the water pieces from the LEGO Technic Firefighter Aircraft 42152.
Set Review: The mechanism to rotate the propellors of the Firefighter aircraft is very original and is a great functionality. This makes the set a must have from the Technic line up. The size is quite impressive. Moreover the large number of pieces in the common red en yellow colors make it a great addition to my collection to build new robots.




Celebrating MINDSTORMS with a Remix - Part 3

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The ROBOTMAK3RS continued their celebration of the 25th Anniversary of MINDSTORMS through these Fall and Winter remix projects. Each ROBOTMAK3R was tasked with selecting one LEGO set of their choice and combining it with a MINDSTORMS set. Below are the five amazing models they came up with.

Fairy Tale Remix by Asha Seshan

This remix combines the Tranquil Garden Set No. 10315 with MINDSTORMS Robot Inventor (31313). The objective of the model is to help Little Red Riding Hood get to the Tranquil Garden. The small red ball must get past the dark forest, the witch’s house, and the raging river, before falling into the tranquil garden. The game can be played in daylight or in the dark! Using the buttons on the hub, a player can control the angle of the golfer. Different colored blocks and a color sensor are used to control the swing (slow, medium, fast). Motors control the trees and the witch in the forest. A 3X3 light matrix illuminates the witch’s house. You can see the remix in action here.

Set Review: The Tranquil Garden set was a very satisfying build. As an adult, I especially liked that the instructions were not printed on a solid black background. Some sections were a bit challenging to see nevertheless (e.g. the roof of the house). A lot of the build required great attention to detail and patience (e.g. placing water, fish, rocks, etc in the right location). This was somewhat a challenge, but the end result was worth it. I would have preferred to place the elements under the black stand earlier (ie. not having to flip over after a significant amount was built on top). The trees were especially creative. I also appreciated the curved elements of the shrine. While the overall model was designed to be a peaceful Asian-themed garden, the elements lend themselves to other uses and worked very well in my reimagined Fairy Tale Remix project.



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