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Declan Coen

Control From Iphone or Ipod Touch - 7 views

some programs on it can be harmful. I had to restore my ipod three times

iphone control bot

Thomas Helm

Robot Control - 3 views

  • The most common kind of robot failure is not mechanical or electronic failure but rather failure of the software that controls the robot.
    • Thomas Helm
       
      Has a bunch of categories to choose from on the left side
Anthony DiVirgilio

BrooksBots - Strategy for Autonomous Sumo Robot used in ExSpurt & Executioner - 1 views

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    this provides strategy for controling the robot
Thaddeus McKeon

NXT controlled motorcycle - with realistic steering! - 0 views

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    he has a good idea the ramp we need to go up is pretty thin
Joshua Wilkinson

data log labview - 1 views

1.Click the Select a VI icon or text on the Functions palette. 2.Navigate to the VI that logged the front panel data and place it on the block diagram. 3.Right-click the VI and select Enable Da...

labview

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

Related Documentation (DSC Module) - LabVIEW 8.6 Datalogging and Supervisory Control Mo... - 0 views

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    The following documents contain information that you might find helpful as you use the LabVIEW Datalogging and Supervisory Control (DSC) Module. You must install the PDFs to access them from this help file. You must have Adobe Reader 6.0.1 or later installed to view or search the PDF versions of these manuals.
Joshua Wilkinson

Sumo Bot Design Suggestion - 11 views

isnt the front gonna be a wedge anyway, how would be easier to flip?

Declan Coen

PID Controller For Lego Mindstorms Robots - 7 views

  • light sensor "sees white" then we know it is left of the line's edge (and the line). If it "sees black" then we know it is to the right of the line's edge (and on the line). This is called a "left hand line follower" since it is following the line's left edge
  • We need to know what values the light sensor returns when it "sees white" and when it "sees black". A typical uncalibrated sensor might give a "white" reading of 50 and a "black" reading of 40 (uncalibrated, on a 0 to 100 scale). It is convenient to draw the values on a simple number line to help visualize how we convert light sensor values into changes in the robot's movement.
  • Below are our made up light values for white and black.
  • ...4 more annotations...
  • We'll just divide the range into two equal pieces and say that if the light level is less than 45 we want the robot to turn left. If it is greater than 45 we want to turn right. I won't go into how exactly the turns should be done. I'll just say that gentle turns work well for a fairly straight line
  • line with lots of curves usually needs to be making sharper turns. For gentle turns you might use Power levels of 50% on the fast wheel and 20% on the slow wheel. For sharper turns on a curvy line you might need to use 30% power for the fast wheel and coast or brake the slow wheel. Whatever power levels you use the numbers will be the same for the two turns, you just switch which motor gets the big number and which get the smaller number (or a stop command).
  • This type of a line follower will follow a line but it isn't very pretty. It looks OK on a straight line with with the motors programmed for gentle turns. But if the line has any curves then you have tell the robot to use sharper turns to follow line. That makes the robot swing back and forth across the line. The robot only "knows" how to do two things; turn left and turn right. This approach can be made to work but it is not very fast or accurate and looks terrible.
  • In the above approach the robot never drives straight, even if it is perfectly aligned with line's edge and the line is straight. That doesn't seem very efficient does it? Lets try to fix that. Instead of dividing our light value number line into two regions lets divide it into three.
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    seems useful for following a line effectively
  • ...1 more comment...
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    this is a really good technique
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    the top of this article explains how it would be easier to follow the edge of the line rather than the center of the line. As it detects the white it will turn back to the black and as it detects the black it will turn back to the white.
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    i found the edge thing on another site too
Thomas Helm

Line Follower - LabVIEW for Lego MINDSTORMS Projects - 3 views

  • 3. In case the lighting in the room changes, could you program your line follower to re-calibrate the light sensor when you push a button?
    • Thomas Helm
       
      could b useful later on to look into
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    Tufts University Center for Engineering Education and Outreach In this activity, we will learn how to create a robot that follows a line on the ground. It will use one light sensor to sense where the line is, and use this to control the motors to steer the car and stay on the line.
Stephen Brogan

Robot combat - Wikipedia, the free encyclopedia - 2 views

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    Robot combat is a hobby/sport in which two or more custom-built machines use varied methods of destroying or disabling the other. As of today, in most cases these machines are remote-controlled vehicles rather than autonomous robots, although there are exceptions, particularly in the field of robot-sumo.
Alexander Laferriere

NXT Voice Controlled Car - 4 views

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    we could use this logic, when the sound sensor detects the sound indicating the start of the race that would be the starting condition for the program ps. i know that we do not use the same programming as in the picture
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    But what if people are speaking? you would have to set it to a certain frequency.
Thomas Helm

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

    • Alexander Laferriere
       
      this shows how to turn on a motor if the button is pressed so if it is not pressed it will stop
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    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.
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