8/16/10 Cougar Tweaking(again, again, again) PDF Print E-mail
Thursday, 19 August 2010 20:50
So tonight, we worked on finishing up our routine rebuilding.  Basically, we made the robot go over walls in a more efficient way(which oddly enough is backwards!)  and from there we just made things work more towards the sweet spots.  well thats it for now, oh wait!  we timed our run.....can we have another minute please :D? -Philip
Last Updated on Sunday, 22 August 2010 15:18
 
Cougar v6 MoonBot Rover in Action PDF Print E-mail
Written by Dr. M. Judith Radin   
Wednesday, 18 August 2010 10:03

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The Cougar v6 MoonBot Rover takes on the first part of the MoonBots lunar course.  The v6 rover turns and maneuvers easily on the LEGO pip terrain.  It climbs walls, and locates its position on the lunar surface using the combined readouts of compass and proximity sensors.  Check out the home-made Omni wheels on the back.

Last Updated on Wednesday, 18 August 2010 15:44
 
Cougar Omni Wheels - Our Secret Weapon PDF Print E-mail
Written by Joey   
Thursday, 19 August 2010 08:30

Our first robot had great traction and could turn.  It had 4 wheel steering and 4 wheel drive.  But it was heavy, and it was not KISS.  It had an NXT brick, 3 NXT motors, a power-factors battery pack, and infrared link from the nxt, and 2 power factors motors.   

Our next 4 wheel drive tests showed that a robot with 4 wheel drive and good traction on all wheels doesn't like to turn.  And when it does turn it tends to warp the chassis while it's doing so.  It puts a lot of strain on everything.

What we really needed were Omni wheels like FRC & FTC sometimes use.  Too bad LEGO doesn't make omni wheels, right?

Well LEGO may not make omni wheels but the Cougars do.  These are our 2nd generation omni wheels.  The first ones were 2 pips smaller in diameter and didn't have rubber on the tires.  The were great for turning, and worked great if we were square to the pips on the field, where they could dig in.  But they didn't give us enough traction when climbing ridges or when at a diagonal to the pips on the field.  

These latest omni wheels are bigger, have rubber tread for great traction, and help us spin on a dime.  With these wheels the turns are predictable, because the front wheels pretty much control where we end up.  Yet with 4 wheel drive these wheels help us navigate the difficult terrain of the LEGO Moon. 

 

 

Last Updated on Sunday, 22 August 2010 15:17
 
The Evolution of the Cougar v6 Chassis PDF Print E-mail
Wednesday, 18 August 2010 10:28

Here's our v3, v4 (what's left of them, v5, & v6 chassis.

Note the longer arms we've gone to on the v5 & v6 chassis. The v6 chassis also switches the drive-train from chain to gears. 

 

 

Last Updated on Sunday, 22 August 2010 15:16
 
8/16/10 Tweaking the Cougar v6 Rover PDF Print E-mail
Tuesday, 17 August 2010 20:12
So, to all those who read this blog(not sure how many people that is Undecided) but here's what is new!:  We have for the most part finished our run!!!(HIP-HIP!)  This means that we can grab all but the southernmost yellow rings on the right side of the field.  We are tweaking the programming to make climbing out of craters easier to do, and more reliable.  Once we have that done, we will begin making timer programs as back up plans.  This means that the robot will keep track of the 3 minute run countdown, and if something should go wrong, leaving it with a short amount of time(too short to finish the run), it will head back to the starting ramp, so that we can at least double the points of the rings we already have.  Several of these back up plans will be programmed in to various points in the run as fail-safes.  Lastly, if the robot has enough time left, we may program it to decide based on time whether it thinks it should try to grab the last two yellow rings.  With not a lot of days left we are entering CRUNCH TIME!  It seems like our goals are now just within our grasp if we keep working as hard as we have been! :D
Last Updated on Tuesday, 17 August 2010 20:48
 
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  • The Game Design Committee is Accepting Applications!
    If you’ve ever been interested in participating in the FIRST Tech Challenge Game Design Committee, this is your chance! We will be accepting applications to add one member to the committee. The application will be open from 11/20/2017 through 12/18/2017 at 12:00pm EST.

    The current Game Design Committee is made up of five members, and we are looking to add a sixth member who will help the committee make progress on the 2018-2019 season game cycle. This individual will also shadow the current committee on a weekly conference call to get a feel for how the GDC supports the current season game.



    If you are interested, or know anyone interested, please feel free to pass this along! The official volunteer description, along with a link to the application are listed below.

    Game Design Committee – Volunteer Position Description
    The FIRST Tech Challenge is seeking an interested individual to serve one game cycle (approximately 18 months) as part of our Game Design Committee. The Game Design Committee is a group of volunteers who brainstorm, create, and implement all aspects of the FIRST Tech Challenge games (less production/fulfillment). As a member of the Committee, this person will be responsible for attending weekly conference calls, and providing input and creative ideas for the game currently being designed for next the season. This person will contribute to the creation of Game Manuals Part 1 and 2, and to other supporting documents needed for the game. The person in this role will provide support for the game once it is released for the current season via the Official Q&A forum. We are looking for someone who is creative, is a team player, and can meet the time commitments outlined in the job description.

    Job Description:
    • Contribute a minimum of 5 hours each week, including a weekly conference call that occurs during normal business hours (eastern time).
    • Provides input during the design phase to insure the game meets requirements outlined by FIRST.
    • Contribute to the design phase to make sure game elements meet quality standards and budget requirements.
    • Contributes to documentation and manuals needed to support the game throughout the season.
    • Provides support through the Official Q&A Forum to answer team related questions throughout the season.
    • Maintains confidentiality of all aspects of design process. 
    • Applicants must be a minimum of 25 years old.
    • Position may require a trip to FIRST Headquarters in Manchester, NH.
    • CAD experience is a plus, but not required.