Thanks to the great help from Nigel Ward (http://www.mind-storms.com/) we now have a French Translation of the popular "Classroom Activities for the Busy Teacher: EV3". It is available as an eBook for the moment and if you know of any Teachers in French speaking countries, please let them know!
At a recent conference I ran an advanced EV3 workshop where one activity concentrated specifically on the use of arrays. Arrays are a new edition the MINDSTORMS software that the previous NXT-G software didn't support (at least not cleanly). Arrays allow us to store multiple bits of data all in the one 'thing', which makes it easier to access. If you think of Variables as being a suitcase where you can read and write some information, then Arrays can be thought of as a suitcase that has lots of smaller folders inside. Each folder can store an individual piece of information and you can access that information but selecting suitcase, and then the folder inside.
While you can do the same thing with lots and lots of Variables, Arrays make it far cleaner.
Create a game of Memory. The EV3 will call out 4 random colours. You then have to show the Colour Sensor the colours in the right order. Get it right and you score a point, get it wrong and you get a disappointing buzz.
The whole project can be broken down into 2 distinct stages 1. Create and say the sequence of random colours 2. Check if the colours shown to the colour sensor match the sequence.
Create the Sequence array
To start, we initialise an array and call it 'colours'. As we are going to use the 'Append' function, we don't need to say how big the array will be to start with.
We then generate a random number between 1-4 (I'm only using 4 colours at the moment). This random number is appended to the Array. As there is nothing yet in our array, this means it will be put in at array index 1. (NB. Arrays in EV3-G are numbered from 1, which is different other programming languages with often begin numbering at 0. There were long and intense debates around the reasoning for this which I won't get into!).
If the number is a 1, the EV3 will say 'Black'. A 2 will give 'Blue', 3 will give 'Green' and 4 gives 'Yellow'.
Rinse and repeat 4 times (don't want to make the sequence too long). Each time it repeats, the 'append' function adds a new random number to the end of the array.
Checking the colours
Once the EV3 has said its sequence of colours, it moves into checking mode.
Firstly it waits for a colour to be detected. Any colour will do, just so long as it is not 'no colour'. It then waits for half a second to make sure the colour paddle has settled into place. This is needed to make sure the colour sensor doesn't pick up a bunch of random colours as the paddle comes down over the top.
We then read the actual colour so we can check it against our sequence. After that we need to check against our array. We use the loop counter plug which keeps track of how many times we've been through the loop. The first time through the loop, the loop counter is '1', which means when we use the 'Read at Index' block, it will tell us what number is in the 1st position of our array.
We send this number from the array along with the colour measured from the Colour Sensor block (which will be in the form of a number) through to a 'Compare Block' which will give us either a TRUE (colours match) or FALSE (colours don't match).
A Logic Switch uses this information to play a High note if it is TRUE and a low note if it is FALSE. Repeat 4 times to match the length of the sequence.
This is the basics behind the game. In the video I added a score using a variable that incremented. I also used the Medium motor to turn a simple dial to indicate the score going up. I'll leave that up to you to figure out :)
If you make some cool modification, please let me know!
I was very honoured to be invited to give the opening keynote at the 2nd Arab Conference on Robotics and Artificial Intelligence, held in Amman, Jordan on December 14-16th.
My keynote was titled "Robotics Today and How we are preparing Students for a Robot Filled Future" and I touched on topics such as the current state of robotics, changes in Robotics Education around the world and how Australia is currently approaching a new 'Technologies' curriculum. Critical Thinking and its interrelation with all curriculum areas was also discussed.
The talk was well received and I had plenty of great conversations with the participants throughout the three days. In addition to my Keynote, I also ran three EV3 workshops for the delegates. We did two identical workshops on the basics of EV3 and how it differs from the NXT and one advanced workshop where we dived into more of the complexities of the software. This advanced workshop concentrated on the new Array feature of the software and I'll do a separate post on that activity shortly.
The only real downside to the whole trip was the sudden and unexpected snowstorm. Apparently it was the most snow they have experienced in the region in memory and quite a few people (including the Prince of Jordan) were unable to make it on the first day.
A special note of thanks to Sami Alzein who looked after me and took me around on the last day once the snow had melted enough for traffic to get through!
I've finally taken the plunge and am offering all my books in downloadable pdf format. (Still have physical copies if you're so inclined)
Classroom Activity books (EV3, NXT and Datalogging) are US$20 and the rest (WeDo, Making Music and PSP controller workbook) are US$10.
Find them all here! - www.damienkee.com/books
While there has been a lot of discussion and questions around the differences between the Home and Education versions of the EV3, there hasn't been a lot about the differences in the software. I'm going to try and summarise as best I can here. If I miss anything, please let me know.
The most important thing to note first up, is if you ignore all the marketing / packaging of each software, then the actually programming language (unofficially called EV3-G) is exactly the same for both the Home and Education editions.
The biggest difference is probably in the Lobby area. The Home edition is definitely marketed towards Boys, aged 8-14 with quite bold and dark colours and slightly menacing looking builds. The Education Edition is far cleaner, which will appeal to teachers and (stereotypical) girls.
|Education Edition||Home Edition|
|Cost||US$100 Single licence
US$400 Site Licence
|Tutorials||Generic tutorials for all aspects of the EV3 device||Tutorials specific to each particular build|
|Building Instructions||EV3 Core Base
Robot Arm H25
Download pdf's here
as well as links to other bonus models
|Sensor Support||Supports both EDU and Home sensors||
Supports both EDU and Home sensors
There will be additional education modules you can purchase (the Design Engineering module being the first) which I believe you can only load into the Education version.
Conclusion: They are actually pretty close. If you are just looking to program your robot, and not concerned about the very 'boy' focussed lobby, then the Home version will suit you fine. If however, you're looking to roll this out in a classroom, where you'll likely have a mix of ages / genders, then the Education edition is certainly worth looking at. If you're going to be using your EV3 for more than just 'robots' and are going to delving into some *science* (which I strongly recommend everyone does!), then you can't go past the Education edition software.
Did I miss anything?
My new book Classroom Activities for the Busy Teacher: EV3 is now available! I'm offering it in two formats, full colour hardcopy from Amazon, or for the first time ever, as a pdf eBook that you can download.
Get all the information, Sample Pages and free Student Worksheets and Building Instructions here!
If you get a copy, leave a comment below to let me know what you think of it.
This is my simple EV3 robot design. It is very quick to build, uses very few pieces and has interchangeable attachments. This makes it very useful in a classroom setting.
If you do end up using this design in class, please let me know, I love to hear how far and wide throughout the world my design travels :)
Normally my school holidays are pretty laid back, a chance to catch-up on all the admin work that gets neglected during the Term. I was also really looking forward to some uninterrupted time to be able to finish up the new EV3 book, just in time for the August release date. For some reason however, this turned out to be my busiest School holidays in a very long time.
I ran two Robotics workshops for the Queensland Gifted and Talented Association, two Robotics / Scratch Programming workshops for MENSA children and an all day "Create your own computer games" workshop for The Engineering Links group. Throw in a Stop-Motion animation workshop for a home schoolers group and some incidental IT support for a conference down the Gold Coast and these last two weeks have just flown by!
Fingers crossed I can find enough time to get my EV3 book ready on time!
After being able to see the EV3 hardware for the last few months, it's really exciting to be able to now show off the new software.
This is just a taster, and I'll get into more detail in future posts.
The new software follows on from the NXT-G software, in that it remains graphically based. This is fantastic for first time users as well as the younger students. For those looking for more powerful languages, there is LabView and RobotC to keep you satisfied.
The Palette of Blocks has now been moved to the bottom and the "Common' Palette has been removed. All the Blocks are available all the time.
For those of you familiar with the WeDo software, it has a lot of familiarity. This will be very beneficial for those students transitioning.
One of the big changes is how the blocks display their parameter information. In NXT-G, you had the Configuration Panel. That was great, it had a lot of information there, but once you clicked to another block you couldn't see the info any longer. With the EV3 software however you can see all the info on the block itself. No more clicking through every block to understand a program. This will be a huge help to teachers, as often we are just glancing over students shoulders to see their work, and this will allow us to understand the whole program without taking control of the mouse.
This block I have set up to drive straight ahead, 67% power, for 5 rotations and the Brake at the end. The motors are connected to Ports B and C.
This one is setup to drive gently to the left, -35% power (backwards), for 3.7 seconds.
Setting the Parameters
Setting the Parameters is really nicely handled as well. Every Block has a Mode Selector which governs the main function of the Block. In the above example that means determining if you are working in Seconds, Degrees, Rotations etc.
If there is a number required, on nearly all the blocks you are given the option of typing in a number or moving a slider bar, very handy indeed.
Data wires in NXT-G were messy, and while it would be impossible to simplify them entirely, the EV3 software does a much better job in managing them and figuring out where they go.
This example will take a reading from the Ultrasonic sensor connected to Port 1, combine it with some text, display on the screen and then continually update the screen with new readings.
There are tool-tip everywhere, so if you're ever not sure what an icon does, just hover your mouse over it, and it'll give you a couple of words outlining its properties.
This is just a very brief teaser and I'll go into far more detail in upcoming posts. If you have any questions or thoughts, please don't hesitate to ask!