LEGO was all over World Maker Faire! Besides FIRST LEGO League, LEGO was a common sight. LEGO provides a flexible building platform and Makers love LEGO. While it might not ship in a final project, the iconic, modular bricks provides an unmatched ease of use for prototyping. This has been one of my favorite posts to write, showing off all the awesome creations of the community! Follow me after the break to check out more of the LEGO sights of World Maker Faire 2016!
Posts Tagged ‘NXT’
Tags: EV3, Health, LEGO, LEGO MINDSTORMS, LEGO MINDSTORMS EV3, LEGO MINDSTORMS NXT, Make, Maker, Maker Faire, NXT, Raspberry Pi, World Maker Faire
Tags: Image Processing, LEGO MINDSTORMS, Maker Faire, MathWorks, MATLAB, Mobile Robotics, NXT, Orlando Mini Maker Faire
Remember that Maker Faire demo I posted about a few weeks ago? Well as promised here is Part 2! This time I dive into the new features I added for the demo. The video format is a bit strange in that it presents a PowerPoint, but that was a requirement for a class. I ended up leveraging this work for my image processing class this semester.
One of the easiest ways to make a demo interactive is to kid a child a maker and say draw. That is exactly what this demo does. As the child draws, the robot or swarm will follow the line. I do some image processing to find the line. The first step is to reduce the search area. This is a huge time saver when it comes to processing and removes many of the issues of shadows or various markers and body parts the camera may see. Then it does a search in this region of interest (ROI) and looks for where the line intersects the ROI.
I tried to keep the new feature as streamlined as possible to avoid the issues of degraded performance. Image processing can be quite processor intensive. Since the code was already doing a lot of processing to get to this point, I wanted to ensure that any further enhancements did not add lag.
There is always room for improvement and one of those areas would be actually projecting the line to calculate the intersection. This would probably help for the cases where the line does not intersect the edge of the ROI, but that is a feature for another time. Check out the video for more details. It came together really well!
Tags: Brickbot, LEGO, LEGO MINDSTORMS, Mobile Robotics, NXT, NXT-G, Robots
Baz, an MCP up in Montreal, Canada, created one of the coolest robots ever, Brickbot. Brickbot is a LEGO MINDSTORMS robot, hidden under a big LEGO shell. For Christmas/my birthday, my roommate got me a few LEGO containers. Like Marc, I quickly made a robot to fit inside the shell. Using parts from only one NXT kit (but some may be different in color), I created the frame you see here. I put in a ultrasonic sensor that looks under the bigger brick to help it avoid objects. I wrote a quick program in NXT-G and my red Brickbot was born. He roamed around at the Greenfield Brick Expo and will be roaming around today at the IL FLL State Tournament in Chicago. More pictures below!
Tags: Brickworld, BW, Dexter Industries, DI, IMU, Mindsensors, mindsensors.com, NXShield, NXT
Today is off to a great start here in Fort Wayne. Lots of people and lots of LEGO! I am doing some live demos of the NXShield and DI IMU. Be sure to stop by if you are in the area! Check back later for more pics!
Tags: LEGO, LEGO MINDSTORMS, NXT, Testing
LEGO is conducting some product testing in the New York City area. If you are between the ages of 10 and 13 and own an NXT set, have your parents visit lego.com. Here is the post:
Attention LEGO® MINDSTORMS® NXT fans!
If you own a LEGO® MINDSTORMS® NXT robot, if you live in the area of New Jersey/New York City, USA, and if you are willing to help us with some product testing in early October, we are asking for help from our 10-13 year old fans! Parents can download and complete the form, found here:
http://mindstorms.lego.com/en-us/News/ReadMore/Default.aspx?id=320866 and send it back to us by 9/28/11
Once we receive the signed form, you may be contacted by a representative from the company, that conduct the focus group for the LEGO Group. If you are chosen, we may end up having you join us to help with some consumer product testing on October 8th or October 9th.
*Note – you must own a LEGO® MINDSTORMS® NXT robot, and live in the New Jersey/New York City area to be eligible to participate.
Tags: Dexter Industries, IMU, LEGO MINDSTORMS, NXT, NXT-G
Dexter Industries has new product: the DI IMU. An IMU or Inertial Measurement Unit is a sensor that can measure rotation and acceleration about the x, y, and z axis. This sensors has a ton of applications, from data logging different movements, to balancing a segway. In addition to its awesome uses, the sensor is small, so it can be easily integrated into a robot. While much of the software is still in development, you can see some initial readings on the screen (sorry for the bad picture). Just think if you couple this bad boy with NXTBee, you now have a wireless IMU.
Tags: Dexter Industries, Examples, LEGO, LEGO MINDSTORMS, NXT, NXT-G, NXTBee, Robots, xBee
I have updated the examples for the NXTBee on the files page. These updates include timing so the screen shows the correct text and updating it to work with the 2.12 version of the block. If you have any issues with the newest update, please let me know!
Next, I am planning to update a revision to the NXTBee block in the coming week. It will likely be around version 2.20. This update adds a timeout to both sending and receiving. Sending will try 10 times to send and if it does not hear back form the other NXT, it will stop. Receiving will listen for 20 ms before it times out. This should make it so the software is easier to use. If you are interested in testing this, please leave a comment or email me.