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Anthony DiVirgilio

Fuzzy Line Following NXT Robot - 5 views

stefans-robots.net/...zy-line-follwing-nxt-robot.php

following line nxt robot

shared by Anthony DiVirgilio on 12 Mar 12 - No Cached
  • Bryan Kelleher on 12 Mar 12
     
    One of the tutorials within the Lego Mindstorms NXT Software shows how to program a robot that follows a line using Boolean Logic. In the following, an improved version, based on Fuzzy-Logic, is presented. Although a little bit more complex, the program is still implemented using NXT-G Code.
  • Anthony DiVirgilio on 12 Mar 12
     
    this has some good ideas
Bryan Kelleher

NXT data log for Android | AppBrain.com - 0 views

www.appbrain.com/...ventor.ai_yannispoulakakis.NXT

shared by Bryan Kelleher on 26 Jan 12 - No Cached
  • Bryan Kelleher on 26 Jan 12
     
    All apps " Productivity " NXT data log 500-1,000 downloads, 1 ratings (5.00 average), 1301 kb An application for logging the input data of a Lego Mindstorms NXT robot. It is ideal to check the parts of a robotics project using a simple, one-screen interface.
Jarid Brogan

The NXT STEP - LEGO® MINDSTORMS® NXT Blog: Datalogging with NXT-G - 0 views

thenxtstep.blogspot.com/...datalogging-with-nxt-g.html

nxt blog mindstorms lego lego®

shared by Jarid Brogan on 26 Jan 12 - Cached
  • Jarid Brogan on 26 Jan 12
     
    description of datalogging
Thomas Helm

LabVIEW Add-ons for LEGO® MINDSTORMS® NXT - Developer Zone - National Instrum... - 5 views

zone.ni.com/...4435

shared by Thomas Helm on 13 Oct 11 - Cached
    • Alexander Laferriere
      Alexander Laferriere on 13 Oct 11
       
      this shows how to turn on a motor if the button is pressed so if it is not pressed it will stop
  • Thomas Helm on 05 Apr 12
     
    LabVIEW Toolkit for LEGO MINDSTORMS NXT Program and control NXT devices with the full power of LabVIEW Get real-time updates from the NXT device during program operation with LabVIEW front panels Create native blocks for LEGO MINDSTORMS NXT software Figure 1.
Thaddeus McKeon

NXT Line Follower - 1 views

www.nxtprograms.com/...index.html

sensor detection

shared by Thaddeus McKeon on 12 Mar 12 - No Cached
  • Thaddeus McKeon on 12 Mar 12
     
    yet another NXT line follower bot using the light sensor
Thomas Helm

Sound sensor - 4 views

www.convict.lu/...NXT_sound_sensor.htm

shared by Thomas Helm on 13 Oct 11 - No Cached
  • Both LEGO™ NXT sound sensors were placed at the same distance from the speaker. A very simple LabVIEW NXT toolkit was run in debugging mode, in order to display the values on the PC screen and keep the NXT alive (Fig. 3). The frequency and the signal amplitude were gradually changed and the sensor readings were noted manually and entered into an Excel-file and also into a LabVIEW 3D-graph program (that we do not reproduce here). (Fig. 4 and 5) show the different graphs in 3D for the frequencies 100..1000Hz.
    • Anthony DiVirgilio
      Anthony DiVirgilio on 13 Oct 11
       
      we could use this to make the user have to do less to use the robot
  • Thomas Corcoran on 13 Oct 11
     
    Sound sensor with example code
  • ...1 more comment...
  • Alexander Laferriere on 06 Dec 11
     
    this is helpful
  • Declan Coen on 06 Dec 11
     
    This shows how the sensor will detect sound and then transmit it to the nxt
  • Bryan Kelleher on 07 Dec 11
     
    THIS WAS EXTREMELY HELPFUL
Joshua Wilkinson

NXT Line Follower - 2 views

www.nxtprograms.com/...steps.html

shared by Joshua Wilkinson on 12 Mar 12 - No Cached
  • When line following, the robot will try to align itself centered over the boundary between white and black (not centered over the black line), with black to the robot's left.  Here the brightness seen by the sensor is halfway between the black/min and white/max readings
    • Joshua Wilkinson
      Joshua Wilkinson on 12 Mar 12
       
      This would be useful since we get the value when its over the tape and table, we can also find the value of the sensor when its directly over the tape then the table seperately.
  • When prompted to sample the "Min" or "Black" reading, position the sensor so that the red spot is centered over the line and then press the Enter button on the NXT. When prompted to sample the "Max" or "White" reading, position the sensor so that the red spot is completely over the surface away from the line and press the Enter button on the NXT.
  • Andrew Drogan on 12 Mar 12
     
    Before line following using either the LineFollow2 or LineFollow5 program, you should "calibrate" the light sensor to the actual conditions expected. With the sensor mounted on the robot where it will be used, and the robot placed over the actual line it will be following, a calibration process takes two light sensor readings, one directly over the line (minimum = darkest), and one over the surface away from the line (maximum = brightest).
  • Declan Coen on 12 Mar 12
     
    if we follow the edge of the line we will always be between the max and the minimum values. therefore, it can detect both values and stay between the min and the max.
  • Thomas Helm on 12 Mar 12
     
    we have to figure out how to correctly calibrate the sensors
Thomas Helm

Nxt - 7 views

www.ece.gatech.edu/...NXT%20lab%203.pdf

shared by Thomas Helm on 12 Mar 12 - No Cached
  • Thaddeus McKeon on 12 Mar 12
     
    this shows how to get an NXT to keep on the line where it should turn and all taht good stuff
  • Thomas Corcoran on 12 Mar 12
     
    shows different light sensor values you should get around when you are going off the tape
Thaddeus McKeon

Community: Autonomous NXT Robot - 1 views

decibel.ni.com/...DOC-15686

sensor detection

shared by Thaddeus McKeon on 12 Mar 12 - No Cached
  • Thaddeus McKeon on 12 Mar 12
     
    an NXT doing a maze in only a minute 35
Thaddeus McKeon

Building Robots with LEGO® Mindstorms® NXT > Solving a Maze > Building a Maze... - 1 views

my.safaribooksonline.com/...ch17lev1sec4

shared by Thaddeus McKeon on 02 Apr 12 - No Cached
  • Thaddeus McKeon on 02 Apr 12
     
    I know it doesn't say much but this single-motored nxt can rotate it's ultrasonic sensor allowing it to see multiple walls at once
Thaddeus McKeon

NXT Radar - 1 views

www.nxtprograms.com/...index.html

radar

shared by Thaddeus McKeon on 02 Apr 12 - No Cached
  • Thaddeus McKeon on 02 Apr 12
     
    this nxt has been built to map things with a rotating light sensor
Thaddeus McKeon

NXT Dragster - 7 views

www.nxtprograms.com/...steps.html

shared by Thaddeus McKeon on 06 Dec 11 - No Cached
  • Bryan Kelleher on 06 Dec 11
     
    This is a good idea
  • ...1 more comment...
  • Nick Laferriere on 06 Dec 11
     
    It is too big for the track
  • Thaddeus McKeon on 07 Dec 11
     
    shows how to make a big NXT dragster but has some stuff about gear ratios in it
  • Bryan Kelleher on 07 Dec 11
     
    FITZGERALD, THIS IS A GOOD IDEA I THINK WE SHOULD USE IT
Joshua Wilkinson

http://www.teamhassenplug.org/NXT/Gears/ - 16 views

www.teamhassenplug.org/Gears

shared by Joshua Wilkinson on 06 Dec 11 - No Cached
  • This motor shaft will make 3 rotations, in the same time the output shaft makes 5 Gears used: 20 tooth on motor, 12 tooth on output Gear Ratio: 3:5 Power: 3/5x motor Speed: 5/3x motor (faster)
  • This motor shaft will make 1 rotations, in the same time the output shaft makes 3 Gears used: 24 tooth on motor, 8 tooth on output Gear Ratio: 1:3 Power: 1/3x motor Speed: 3x motor (faster)
  • Anthony DiVirgilio on 06 Dec 11
     
    great ideas for gear ratios
  • ...4 more comments...
  • Jarid Brogan on 06 Dec 11
     
    very helpful gear ratio chart
  • Joshua Wilkinson on 06 Dec 11
     
    the bottom two charts are good. It does make it go considerably faster
  • Thomas Helm on 07 Dec 11
     
    It looks like a smart idea for designing the wheels maybe it would be possible to adjust it and make it stronger
  • Joshua Wilkinson on 07 Dec 11
     
    This is probably the best for speed and power(torque). The robot would be front wheel drive based on that if the nxt is on the back with the wheels the robot would flip or slide down due to the weight on the downhill side of the robot not the uphill side(assuming the track is at 22.5 degress
  • Thaddeus McKeon on 07 Dec 11
     
    I agree wit Josh this is what we need for the project
  • Alexander Laferriere on 07 Dec 11
     
    this has some good ideas
Thaddeus McKeon

NXT 3-Speed Transmission with Clutch - 2 views

www.nxtprograms.com/...steps.html

transmission

shared by Thaddeus McKeon on 07 Dec 11 - No Cached
  • Thaddeus McKeon on 07 Dec 11
     
    this is a gear ststem with clutch represented by an NXT
Thaddeus McKeon

NXT controlled motorcycle - with realistic steering! - 0 views

brick-labs.com/...rcycle-with-realistic-steering

nxt

shared by Thaddeus McKeon on 07 Dec 11 - No Cached
  • Thaddeus McKeon on 07 Dec 11
     
    he has a good idea the ramp we need to go up is pretty thin
Anthony DiVirgilio

NXT Data Collection - NI Discussion Forums - 3 views

forums.ni.com/...1441446

data nxt collection

shared by Anthony DiVirgilio on 26 Jan 12 - No Cached
  • sounds like for your application you might want to use the Log Angle (red/blue/green) nodes to acquire your data. This lets you sample at a specific rate for a given amount of time and saves the data to a file called RedData.dat, BlueData.dat or GreenData.dat depending on the color of the Log Angle you chose
  • Anthony DiVirgilio on 26 Jan 12
     
    how to log data
Declan Coen

Log Red Dataset - LabVIEW 2009 LEGO MINDSTORMS NXT Module Help - National Instruments - 4 views

zone.ni.com/...logreddata_poly

shared by Declan Coen on 26 Jan 12 - No Cached
  • Declan Coen on 26 Jan 12
     
    LabVIEW 2009 LEGO MINDSTORMS NXT Module Help Logs Data from the specified sensor connected to the specified port. The data logging parameters are sample time and total time.For the Red Vis, the data is stored in the RedData.dat file on the NXT brick and can be viewed using the Data Viewer application.
Joshua Wilkinson

nxt terminal upload - 0 views

click on the arrow next to nxt files, and the third icon is for uploading saved data from the nxt to the computer

started by Joshua Wilkinson on 26 Jan 12 no follow-up yet
Thomas Corcoran

NXT Basic-1: NXT Basic - Ultrasonic Sensor - 1 views

nxtbasic-1.blogspot.com/...t-basic-ultrasonic-sensor.html

Uktrasonic sensor

shared by Thomas Corcoran on 13 Oct 11 - No Cached
  • The Ultrasonic Sensor uses the same scientific principle as bats: it measures distance by calculating the time it takes for a sound wave to hit an object and return – just like an echo
  • Thomas Corcoran on 13 Oct 11
     
    basic review on the ultra sonic sensor
Stephen Brogan

LEGO.com MINDSTORMS : Products - SENSORS - 9843 - 1 views

mindstorms.lego.com/...9843.aspx

sensors

shared by Stephen Brogan on 13 Oct 11 - No Cached
  • 9843 9844 9845 9846
    • Joshua Wilkinson
      Joshua Wilkinson on 13 Oct 11
       
      is it posssible to use at least two of these on the robot, or is there not enough ports on the nxt
    • Thomas Helm
      Thomas Helm on 13 Oct 11
       
      im very sure that you can use more than one sensor but ill see if i an find something on it now
  • The Touch Sensor reacts to touch and release, enabling your LEGO® MINDSTORMS® NXT robotic creation to "feel" like never before! It can detect single or multiple button presses, and reports back to the NXT Intelligent Brick
  • Stephen Brogan on 13 Oct 11
     
    Interactive sensor database
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