Archive for the ‘Challenge’ tag
Robomatter, VEX Robotics, and the REC Foundation are excited to present low cost, high quality virtual competitions that enable students to test their problem solving and programming skills in the VEX Starstruck and VEX IQ Crossover Robot Virtual World Competitions. And, not only do these virtual competitions provide a great learning experience, you could also qualify for the 2017 VEX Worlds Championship!!
This Year’s Games
Both games simulate the single-player Robot Skills and Programming Skills modes of the physical Starstruck and Crossover competitions. However, only the Programming Skills modes of the Virtual simulations are awarded prizes. To participate in the competition, you must update your Robot Virtual World software.
In the Starstruck Robot Virtual Worlds Competition, your goal is to score as many stars and cubes in your zones. You then must hang your robot on your hanging bar.
For the Crossover Robot Virtual Worlds Competition, you must pick up the hexballs, score them in their colored scoring area, and then balance on the bridge.
Winners Qualify for VEX Worlds!
The winners of the Robomatter sponsored VEX Starstruck and VEX IQ Crossover Virtual World competition will receive an invitation to the VEX World Championship April 19-25, 2017 at the Kentucky Expo Center in Louisville Kentucky!
- Submissions for both contests are due by January 11, 2017.
- Winners will be announced by February 1, 2017
We are thrilled to announce the availability of our two brand new virtual environments, the VEX EDR Robotics Competition – Starstruck and VEX IQ Challenge – Crossover. As in years past, these worlds are made available at the same time as their real world counterparts are unveiled at VEX Worlds!
The competitions for this year are both extremely exciting! With VEX Starstruck, matches are played on a field set up as seen below. The object of the game is to attain a high score by Scoring your Stars and Cubes in your Zones and by Hanging Robots on your Hanging Bar.
For VEX IQ Crossover, matches are played on a field set up as seen below. The object of the game is to attain the highest score by Scoring Hexballs in their colored Scoring Zone and Goals, and by Parking and Balancing Robots on the Bridge.
Using Robot Virtual Worlds will allow you to …
- Practice programming in the 2016-2017 game right away
- Compete with your classmates, or online (starting in the Fall)
- Form strategies using the virtual field
- Develop and test code on a simulated robot before running code on a real robot!
To help you get started with these new Robot Virtual Worlds, check out our video-based VEX Curriculum Series completely for free to help you get started with programming.
Click the following links for more information and to start play today – VEX Robotics Competition – Starstruck Virtual World, and here for the VEX IQ Challenge – Crossover Robot Virtual World.
We are very excited to officially announce the winners of our VEX Virtual Programming Skills Challenge for both VEX EDR and VEX IQ! Winners of each competition received an invitation for their team to the VEX World Championship — April 20-23, 2016 at the Kentucky Expo Center in Louisville, Kentucky.
VEX EDR Winner: Friarbots B (Team # 3309B) from Anaheim, CA. The team member who received the high score was Matthew Krager.
VEX IQ Winner: Flash Robotics (Team # 5194a) from London, England. The team member who received the high score was Dominic Vald.
We’d also like to congrats the VEX EDR runner-up who will be attending VEX Worlds with the challenge invite, since Friarbots qualified for Worlds at their local competition. VEX EDR Runner-Up: Univ. Tec. de Altamira (Team # TAL2), from Alltarmira, Mexico. The team member who received the high score was Victor Francisco Chavez Bermudez
We look forward to seeing all them at VEX Worlds in a couple weeks!
We are excited to say we have our winners in our Robot Virtual Worlds VEX Challenge! However, we are waiting for final validation from teams. If you participated in the challenge, please check your email as soon as possible so we can lock down your spot to VEX Worlds. We look forward to announcing the winners soon!
As some of you may know, we along with VEX Robotics and the REC Foundation have an exciting competition going on right now with the VEX and VEX IQ Programming Skills Challenges for Robot Virtual Worlds. This competition offers a low cost, high quality virtual competitions that enable students to test their problem solving and programming skills in the VEX Nothing But Net and VEX IQ Bank Shot Robot Virtual World Competitions. And, not only do these virtual competitions provide a great learning experience, the winner of each competition will receive an invitation to the VEX World Championship — April 20-23, 2016 at the Kentucky Expo Center in Louisville, Kentucky!
The competition kicked off a few months ago, and it is time to share our latest high scores …
You still have one more month to compete and try to beat these high scores for a chance to qualify for VEX Worlds! Think you can do it? Learn more here robotc.net/recf and visit www.cs2n.org/competitions to sign up!
- Submissions for both contests are due by March 1, 2016.
- Winners will be announced on March 11, 2016!
And remember, you must submit both your score and code through CS2N.org to officially register for the competition.
Robomatter, VEX Robotics, and the REC Foundation are excited to present low cost, high quality virtual competitions that enable students to test their problem solving and programming skills in the VEX Nothing But Net and VEX IQ Bank Shot Robot Virtual World Competitions. And, not only do these virtual competitions provide a great learning experience, you could qualify for the 2016 VEX Worlds!
This Year’s Games
Both games simulate the single-player Robot Skills and Programming Skills modes of the physical Nothing But Net and Bank Shot competitions.
In the Nothing But Net Robot Virtual Worlds Competition, your goal is to program your virtual robot to put as many balls as you can in the Low and High goals, and by Elevating Robots in your Climbing Zone.
For the Bank Shot Robot Virtual Worlds Competition, your robot will need to pick up balls and make some tricky bank shots! The object of Bank Shot is to attain the highest score by Emptying Cutouts, Scoring Balls into the Scoring Zone and Goals, and by Parking Robots on the Ramp. There are a total of forty-four Balls available as Scoring Objects in the game, with one Scoring Zone, one Goal, and one Ramp on the field.
Winners Qualify for VEX Worlds!
The winners of the Robomatter sponsored VEX Nothing But Net and VEX IQ Bank Shot Robot Virtual World competition will receive an invitation to the VEX World Championship April 20-23, 2016 at the Kentucky Expo Center in Louisville Kentucky!
- Submissions for both contests are due by March 1, 2016.
- Winners will be announced on March 11, 2016!
In our newest edition of Student POV, we have Sanjay and Arvind Seshan, who are members of the robotics team, Not the Droids You Are Looking For (Droids Robotics) from Pittsburgh, PA, USA. They are actively involved in robotics all year around, whether competing themselves or teaching others. They constantly share some great pictures on their Twitter page of their team and outreach programs, so we’ve asked them to share some of their experiences in robotics …
Our first exposure to robotics was in 2010 when we decided to visit a FIRST LEGO League tournament at the National Robotics Engineering Center (NREC). We were excited by what we saw and, the next summer, we purchased an NXT LEGO Mindstorms kit and learnt to program using Carnegie Mellon Robotics Academy’s NXT Video Trainer.
We haven’t stopped since! In 2011, we started our own neighborhood-based robotics team with eight other friends. We have participated in FIRST LEGO League as well as VEX IQ contests since then. You can read more about us on our team website (www.droidsrobotics.org).
Benefits of Robotics:
Participating in robotics has taught us several programming languages, as well as general computer science skills and presentation skills. We now code in NXT-G, EV3-G, ROBOTC, Python and HTML as a direct result of robotics. We are comfortable interviewing experts as well as being interviewed about our work.
We use these skills outside of robotics contests to create webpages, and make online tools and programming tutorials. We even developed a robot in Minecraft that uses Python code to complete tasks. One summer, we participated in a 24-hour coding contest called Code Extreme. For that event, we created a bicycle renting system using a Raspberry Pi and an RFID reader.
Robotics has taken us to some interesting places: the inside of a Smart House for seniors, under the hood of an airplane engine, and even to a sulfur dioxide sensor manufacturing plant. These field trips have shown us many different STEM careers we might choose from.
Spreading our love for robotics:
We do many robotics outreach activities all year round. We have been invited to teach other students at the Carnegie Science Center and four local libraries in the Pittsburgh area. At these events, we try to introduce students to LEGO Mindstorms, VEX IQ, EV3-G, and ROBOTC. Kids are naturally attracted to robots, and our hands-on workshops have been very popular. In September 2014, we expanded this outreach beyond Pittsburgh by teaching students around the world to program robots using our own lessons and website (EV3Lessons.com).
The biggest challenge in robotics is probably robot reliability – getting your robot to “behave” as you intend again and again. It takes both software and hardware solutions in combination to improve reliability. To add to this problem, contest environments are often very different from practice environments. Kids who don’t have access to good programming lessons like the ones provided by ROBOTC, CS2N, Carnegie Mellon Robotics Academy’s EV3 Trainer, and EV3Lessons.com often feel frustrated.
The challenges in robotics are not problems you cannot solve. They are part of what makes robotics interesting for us. They teach us to come up with different techniques as solutions. They also teach us patience and perseverance!
Overall, robotics has given us opportunities and skills that we might not have discovered otherwise. The greatest opportunity from robotics is finding out what all a robot can do! People some times think that a child’s robot “can only do so much”. We have found that it can lead to learning a lot of advanced programming techniques.
Robotics has opened up a world of possibilities for us. We especially like sharing these possibilities with other people we meet at our workshops and demos.
You can find more information about their team here: www.droidsrobotics.org and on their programming lessons here: www.ev3lessons.com.
It’s Danica and Jake, back again! This time, teaching people about the slalom challenge, in ROBOTC Graphical Language for the VEX IQ platform. The challenge is to line follow using the VEX IQ color sensor without hitting the “mines”, also known as the cups.
In the graphical organizer, to line follow on the left side of the line, all you have to do is use the block, lineTrackLeft, to follow the right side you have to use lineTrackRight.
In this block, there are 3 boxes, one for the threshold, the second for the speed of the left motor, and the last box is for the speed of the right motor. In this line of code, the threshold of 105, the robot’s left motor is set to go at 50% power, and the right motor is set to go at 15% power.
This block has to be included into a repeat loop to make sure the robot continues to do this command for an allotted amount of time.
The repeatUntil loop has many options for how long the loop should run. For this challenge, we decided to use the timer.
The timer is set at 7000 milliseconds or 7 seconds, so it has enough time to make it through the slalom. Our finished program looks like this:
Now you can line follow in any challenge you would like, the possibilities are endless!
Hi, we’re Alexis and Noah, two eighth grade students at Hopewell Memorial Junior High School. Earlier this week, we did the Robo 500 challenge. To write the programs, we used the recently released ROBOTC Graphical software for the VEX IQ. The goal of the challenge was to complete two laps around a Vex IQ storage bin.
We completed the challenge by using timing and degree measurements. The first step was to get the robot to move forward. For this, we would use a basic motor command.
In ROBOTC Graphical, it gives you the option to choose the values in which you want your motor to run by, such as time and rotations. In this challenge, we chose time.
From there, we experimented with different time values until we found the timing that was needed to finish the side of the challenge before the turn. Through testing, I found that 3.7 seconds covered the distance needed.
Now, what was left was the largest challenge of the program, the turn. Timing a turn can be challenging on seconds alone. So, I used degree turns. I started with a 180 degree, which brought me around about 45°. Due to the drift of the robot when it moves forward, I had to make the turn slightly less than double the 180° turn. I settled on a value of 300°.
Once the values were established, the rest was just repeating the commands so the robot would go around the whole box. Here is an example of my final program.
We were then thinking about how the turns were a hassle with trial and error, and contemplated a better way to turn. So, we decided to use a gyro sensor to have the most accurate turns possible.
To start out the program we had to reset the gyro sensor so the sensor could record the degrees from zero.
From here we moved forward to the end of the course for time, and we moved forward for about four seconds. Then we used a while loop. A while loop is set to check a condition and while the condition is true, it performs what is inside of the curly braces of the while loop. In this case the condition is while the gyro sensor value is less than 90 degrees.
We would then repeat these actions until the robot has made two full laps around the course. Here is the program for one lap. To do two laps I would just repeat this program again.
We were able to finish our programs efficiently in a short amount of time due to the design of the new graphical programming. This new design enables you to drag over commands from the function library; such as, moving forwards and backwards, turning, and sensor commands while avoiding the hassle of painstakingly typing each command. This reduces the time spent on each program and allows us to speed up the pace at which we program, and we are able to complete challenges in a shorter amount of time.
To the left, we have an image of the function library and a depiction of what would happen if you dragged a command into your program. The command would line up with the next available open line and would give you options as to what values you wanted to program your robot with.
If you’re a student who would like to contribute to the blog, let us know at firstname.lastname@example.org.
We are really excited to introduce a new blog series called Student POV! This series will feature students giving their perspective and advice for programming in ROBOTC. If you’re a student who would like to contribute to the blog, let us know at email@example.com. Welcome our first student bloggers, Danica and Jake!
Hi it’s Danica and Jake, and we just completed the Labyrinth Challenge. We are both 8th grade students attending Hopewell Memorial Junior High. We both used VEX IQ Graphical Programming Language to complete this challenge since it is a new software recently released by ROBOTC. The first challenge we had to accomplish was the labyrinth challenge. The labyrinth is a square, where the robot has to travel from the starting point, to the ending point by doing a series of basic commands.
Our first task was to make our robot move forward.
This block is telling the robot to go forward at 50% power for 5 rotations, but you can also set the robot to move for degrees, milliseconds, seconds, and minutes.
Our second task was to make the robot turn left.
When turning left, you can use multiple commands such as degrees, rotations, milliseconds, seconds, and minutes. You can also use this for turning right.
One problem while programming for this challenge was making 90 degree turns. To get a perfect 90 degree turn, with timing, you had to go through a lot of trial and error. After figuring out the perfect turns, based on timing, the time for moving forward, and the stops to prevent drifts, we had to string all the commands together to form the program for the challenge. This what the finished program looks like:
An easier way to perform more accurate turns, is with the use of the gyro sensor. The gyro sensor allows you to count how many degrees you turn. This simply means that you can actually tell the robot to make an accurate turn. You also have to remember to reset the gyro after every use, and it will make this program a lot easier.
To reset the gyro you have to use this block:
The finished program with the gyro sensor looks like this:
In this program we used the setMotor command instead of turnLeft or turnRight. This command is better to use in the while loop since you only have to set the speed of the motor. The condition in the while loop determines how long the robot turns. As a result, we just need to set the motor speed with the setMotor command.
A cool feature you can use in RobotC is commenting out your code. You can also do this in the VEX IQ Graphical Organizer. It is much easier though since you only have to click the number on the block of code you want to comment out.
Commenting looks like this:
These comments allow you to test only one turn out of the whole code, which is very useful during the trial and error stage.
Now it is time to go try the Labyrinth challenge on your own, either with or without the gyro sensor. Have fun!