With LEGO Digital Designer you can design and create your very own Mindstorms robot.This entry was posted in and tagged , , , , , , , on . As you’re more than aware by now, Generation Robots is a huge fan of the Lego Mindstorms EV3 kits. We were already won over by its previous version, the Lego Mindstorms NXT, but this latest version is just packed with bricks, sensors and motors all waiting to be transformed into robots! From now on, we’ll providing you more regularly with useful information to help you purchase the right items, and we’ve put together this comparison of the Lego Mindstorms Education EV3 kit and the EV3 Retail Edition for just this purpose. If there’s one thing all these kits has in common, it’s the presence of an EV3 intelligent brick. The Retail Edition includes 2 large servo motors and 1 medium servo. In addition to these, you’ll also find three sensors: The Education version has the same number of servos, i.e. 2 large servos and 1 medium servo, as well as:
You’d be forgiven for thinking the ultrasonic sensor contained in the Education kit is similar to the infrared sensor, but the ultrasonic sensor is much more accurate for detecting distances, which might prove useful depending on the kind of robot you want to build. If you have the Education kit and want to create some of the robots found in the Retail Edition, you’ll need to get your hands on an infrared distance sensor as well as the infrared beacon. You can also make up for the Lego Technic type pieces that are missing from your kit by purchasing the Expansion Set, which includes more than 850 additional pieces enabling you to create impressive models, like an elephant! While a certain amount of confusion and doubt surround the differences between the Retail Edition and the Education kit, it’s worth knowing that they both share the same programming language, commonly called EV3-G. Neither kit comes with a software CD, so you’ll have to remember to download it.
We strongly recommend that you do this before purchasing your kit, to make sure all your hardware and operating systems meet the minimum system requirements. For the Retail Edition, the software is available for free download from the Lego website. There is a content editor, plus tutorials and instructions for each type of model. It is compatible with the sensors found in both the Education kit and the Retail Edition (after downloading the “EDU” blocks). The software for the Education version is sold separately. You can buy a single user or site license (depending on the number of computers to be equipped with the software), which you then download through a custom link provided with your purchase. In addition to the content editor, this software also includes data logging tools that are extremely useful for teaching purposes. You can however use a version of the EV3 software intended for one of the kits with the other kit (we recommend trying the free Retail Edition version before purchasing the Education license), and you can even install both software on the same computer!
You might be tempted to think that one of the kits is designed for having fun and the other for learning, but it’s always possible to learn while having fun, so you can easily use the site’s Retail Edition in a school setting and the Education kit at home. And don’t forget, you can always add accessories if you want, which is one of the great advantages of the Lego world! Lego Mindstorms kits and software available on Generation Robots:I know I need a new Lego robot. Actually, I need two. I have the Lego Education edition, and I’ve got a retail set on order from a local toy store. I was sold the moment I saw them at CES this year. I also had the chance to borrow (and return) a retail set from Lego in advance of their launch on September 1, and I’ve been putting it to the test to see how it performs. The EV3 is the first update to the Lego Mindstorms robotics set in three years, and it officially goes on sale for a steep $349 on September 1. Is it worth it?
Do you have kids with an interest in robotics? Are you willing to spend this much on a toy? This is a toy that teaches kids (age 10+) programming and engineering skills. It allows exploration of robotics concepts without needing to understand electrical engineering or advanced programming, but it isn’t dumbed down to the point that it becomes boring for older kids or even adults. In fact, the GeekMoms and GeekDads can’t resist a good Lego robot building challenge. So what does the EV3 bring to the table? It still consists of the Lego Technic pin and beam construction system, which allows you to build strong robots with moving parts better than the standard Lego System. The CPU brain of the Lego Mindstorms is still the Brick. I’ve got a comparison shot between my NXT 2.0 brick and the new EV3 brick, so you can see how the system is still basically the same black and white display on a large, sturdy brick: Underneath that similar brick, there’s a newly updated, faster processor.
There’s also more expansion with an SD card slot on the side, and you can program directly on the bot. The NXT 2.0 allowed you to string together a few commands, but if you wanted to do anything fancy, it always had to be done on a computer and transferred to the bot. There’s a caveat here. Full on-the-bot programming is cumbersome. It involves a tiny screen and a lot of hitting up and down buttons. However, the fact that you can do this at all is great news. It means you can have a team or a group of kids that have no access to a computer, and they can still program their robots. I’m immediately thinking of classes, club meetings, camps, and other settings where team robot building challenges would just be amazing. The other price we seem to have paid for the revamped brick interface is in start up and shut down time. My NXT 2.0 brick starts and shuts off pretty much instantly. The EV3 takes 30-45 seconds for each. That’s not a big deal in the scheme of things, but it may be a long wait for kids with short attention spans.
The new EV3 has some of the same sensors and servos as the old NXT, and many have improvements. The large motor servos are the same, but there’s also a small motor servo. The color sensor is easier to attach to your bot. There’s now only one touch sensor, and there’s a brand new infrared sensor with a remote “beacon.” This replaces the ultrasonic sensor in the retail sets. (The Lego Education set includes the ultrasonic sensor but not the IR sensor and beacon.) The EV3 seems more playful and just a little cooler than the NXT design. Everything matches the new red and black color scheme, instead of the Google-esque multicolor mismatch of the previous version. The IR sensor has eyes painted onto it rather than the implied eyes of the ultrasonic sensor. The mostly decorative “wing” pieces have stickers to make your robot appear more like a battle-worn survivor of a space war. The old NXT included a paper test track that got torn up pretty quickly after you put it on the floor.
The new EV3 has a test track that comes as part of the box itself. Cut off the outer layer of the box, and it becomes the test track. It’s both sturdier and more interesting than the previous version. One area that seems like Lego was trying a little too hard is in the naming conventions. The EV3 has an E to 3 substitution in all the demo model names, so the Track3r, the Spik3r, the R3ptar, etc. That feels a little too Leet, and it won’t age well. The good news is that once you build them, you can call your models whatever you want. Speaking of models, there are tons of models and instructions right out of the gate. The box instructions only include the bot pictured at the top of the page. Well, it’s actually three bots in one. You start with a simple tank, add the small motor servo for a spinning “blade of death,” and then add the IR sensor for a remote control tank. The “Track3r” bot comes with a demo program that moves it a few times, makes some noises, and adds some on-screen eyes.
The whole thing takes less than an hour to build, and it means you can make something that just works right away. You also get instructions on how to download several other models, and you can preview the instructions on your computer screen. If you have an iPad, you can also take advantage of an app that shows you how to build the optional models. The iPad app, designed with the help of Autodesk, is just a brilliant idea. It offers animated, 3D, step-by-step instructions, so you no longer end up realizing five steps from the end that you missed a peg or axle at some point. Once you’ve mastered the basic steps, you can use the concepts you learned while building the models and make your own robots. The iPad software would be even better if it also supported iPad-based EV3 programming, but no dice. The software for the EV3 doesn’t ship on disc like it did with the NXT 2.0. Instead, it’s a free download. I have a friend who lost her NXT 2.0 software only to discover that she couldn’t just download it somewhere.
I’ve even heard that the new software is compatible with the old NXT 2.0 bricks, other than not supporting some features that are exclusive to the EV3. The new EV3 software has an updated look and feel but still offers the same drag-and-drop visual programming. If you think that’s too much of a baby step, the operating system behind the Ev3 is Linux, and I’ve been told by Lego reps that they’ve made it easy to bypass the visual programming tools and just hack your robot directly. You can also hook up to four EV3 bricks together for some sort of super robot. You might ask yourself why you’d want to spend nearly $350 on a Lego robotics kit instead of buying a Raspberry Pi for $45 and learning some Python or buying an Arduino kit for under $200 and learning more about electrical engineering. It’s a legitimate question. Some people are going to want to just go for the cheaper options. Some people will want all of them. They do different things, so it’s not an all or nothing deal.
The Ev3 costs a lot upfront, but it’s tough and reconfigurable, and used Lego Mindstorms kits have traditionally held onto their value pretty well on eBay. Other robotics platforms are either used up in the process of building them or go through processor innovations so fast that nobody is interested in the old models. It’s also a great entry point, especially for parents who aren’t robotics super whizzes themselves. You really can step in and assist your younger child or allow your older, enthusiastic child to go hog wild on their own. You can always work your way towards more complicated systems later on. Lego did a fantastic job updating the EV3 with new sensors and better peg slots for building with the old sensors. The expandable brick and new interface are fantastic once you learn how to get around on them. Sticking with the traditional black and white screen display means longer battery life and a more durable device, although eInk display would have been a great innovation here.
I would have liked to see iPad and Android tablet versions of the programming interface to make the robot truly computer independent, but there’s still room for Lego to go in that direction in the future. If you’re already a fan of Mindstorms, you’ll want to get this new model. If you are new to Lego robotics, I suggest looking for a First Lego Robotics League or similar group to explore the possibilities and make sure your child is enthusiastic enough with the idea. As with anything you program, you have to have some tenacity to problem solve. That’s the sort of skill you may want to cultivate in your children. Children under the suggested age of 10 will need a lot of guidance (there are small pieces, the pegs are hard to push into the bots, and Mindstorms can take some abuse—but not kids who want to step on them or throw them from great heights). My 11-year-old had no difficulty with assembly, and once she figured out how to transfer programs, she was debugging and problem-solving bot actions in no time.