Cougar Workshop Bot PDF Print E-mail
Written by The Cougars   
Tuesday, 07 September 2010 06:50

We've designed a Cougar Workshop Bot.  And the Incredibots have designed an EV3 version.  It's a simple robot designed just for the workshop.  So If you don't already have a robot for the workshop try this one.  You should be able to build it in about 1/2 an hour.  It's the simplest robot we could come up with that could do ALL of the labs.  It's only got 79 parts plus 6 wires.  With 2 light and 2 touch sensors appropriately located you can try out the back-to-wall and advance-to-line programs.

The LEGO Digital Designer file is attached to this article and the printed building instructions are here

And a new EV3 version of the printed building instructions are here. 

Wire as follows:

Left Motor -> B

Right Motor -> C

Left-Front Light Sensor -> 1

Right-Front Light Sensor -> 4

Left-Rear Touch Sensor -> 2

Right-Rear Touch Sensor -> 3

Attachments:
Download this file (Cougar Workshop Bot.lxf)Cougar Workshop Bot.lxf[A simple easy to build robot that is a great start for learning to use sensors on an FLL field.]16 Kb18/09/11 22:06
Download this file (EV3 Robot.lxf)EV3 Cougar Workshop Bot[ ]14 Kb15/09/14 19:56
Download this file (EV3_Workshop_Robot.pdf)EV3_Workshop_Robot.pdf[ ]4298 Kb17/09/14 07:59
Download this file (NXT_Workshop_Robot.pdf)NXT_Workshop_Robot.pdf[ ]1575 Kb17/09/14 07:58
Last Updated on Wednesday, 17 September 2014 07:59
 
The Magnets We Use PDF Print E-mail
Written by Jamie Diamond   
Tuesday, 31 August 2010 07:29
We get asked pretty often about the magnets we use for quick tool attachment and switching.  We buy them on BrickLink or ebay.  We use mostly the Magnet Holder 2 x 3, part #2607 and the Magnet Cylindrical, part #73092.
 
Mission Select - LB or EB or RB PDF Print E-mail
Written by Joey   
Sunday, 11 October 2009 16:38
Our Mission Select program.  This program detects which button is pressed and sets a corresponding variable (LB, EB, or RB) to true based on that choice.  If EB or RB are chosen it also sets the variable "Exit Loop" to true.  These values control the execution path of our master program.
Attachments:
Download this file (lb or eb or rb.rbt)lb or eb or rb.rbt[ ]818 Kb22/09/11 21:46
Last Updated on Thursday, 22 September 2011 21:46
 
Advance To Line program PDF Print E-mail
Written by Joey   
Wednesday, 07 October 2009 22:53

This is our Cougar Advance To Line program.  It is used to line up perpendicular to a line.  We used it a lot last year to re-align mid run out on the field.  

This program is based on our 2008 robot, "CA White".  Motor C is on the left side of the robot. Motor B is on the right side of the robot. Light sensor 1 is on the left side of the robot. Light sensor 4 is on the right side of the robot.

It will, in two threads:

  1. Run motor C at 90% power, 2 degrees per loop, checking light sensor 1 to see if the light level has gone below 50
  2. Run motor B at 90% power, 2 degrees per loop, checking light sensor 4 to see if the light level has gone below 50.
  3. Each motor will stop when the light sensor associated with them drops below 50, causing the robot to align perpendicular to a line

 

Attachments:
Download this file (AdvanceToLine.rbt)AdvanceToLine.rbt[ ]401 Kb22/09/11 21:48
Last Updated on Thursday, 22 September 2011 21:48
 
Calibrate Program PDF Print E-mail
Written by Joey   
Wednesday, 07 October 2009 21:16

UPDATED 10/17/2009 at 10:37pm  - Revised code to remove use of Mini-Blocks 

This is our Cougar Calibrate program.  It is set up to use the light sensor on port 1.

  1. Start the program.
  2. Move your robot around until the light sensor is reading the lowest value you can easily find on the field (darkest spot).
  3. Press the left button.
  4. Suddenly it will be reading 0 for that dark value.
  5. Move the robot around until the light sensor is reading the brightest value you can find.
  6. Press the right button.
  7. Suddenly it will be reading about 100 for that light value.
  8. Move the robot around checking to see that the light values are ranging from 0 to 100.
  9. Stop the program.
  10. Do not run it again unless you want to recalibrate again.  The first step of the program resets the light sensor calibration.

 

Attachments:
Download this file (Cougar Calibrate.rbt)Cougar Calibrate.rbt[ ]1080 Kb22/09/11 21:52
Last Updated on Thursday, 22 September 2011 21:52
 
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