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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FTC Blog

FIRST Tech Challenge
The official FTC Blog
  • FIRST Class 2017 - Festival of Champions
    Participating Teams and Schedule

    We are excited to announce and celebrate our FIRST Tech Challenge Teams competing at our FIRST Class 2017 - Festival of Champions! 



    Advancing from St. Louis:
    Team 5466, Combustible Lemons, from Davenport, Iowa - Inspire Award Winner
    Team 8686, Height Differential, from St. Paul, Minnesota - Alliance Captain                
    Team 6929, Data Force, from Littleton, Colorado - 1st Pick                                                            
    Team 5916, BoBots, from Earlville, Maryland - 2nd Pick
                                      
    Advancing from Houston:
    Team 3491, Fix-It, from Victoria, BC, Canada - Inspire Award Winner                                                  
    Team 724, RedNek Robotics Wun, from Sun River, Montana - Alliance Captain                                   
    Team 4216, Rise of Hephaestus, from San Diego, California - 1st Pick                                                  
    Team 8651, Wait For It…, from Pearl, Mississippi - 2nd Pick                                                                                                                                                                                                                       
    These teams are invited to a welcome reception at FIRST HQ in Manchester, New Hampshire, USA, the evening of Thursday, July 27th. Friday, July 28th, invited teams will be splitting their time between a visit to Dean Kamen’s company, DEKA, across the street from FIRST HQ, and time on the field at the event venue, getting their robots calibrated and ready for the big competition the next day. They may even get in some practice with their alliance partners. 

    We know everyone will be excited about Saturday morning, July 29th, the official start to the competition. The competition will be followed by dinner at Dean’s home in Bedford, NH, right next door to Manchester, NH.

    The Competition

    The competition portion of the event will take place at the SNHU Arena in Manchester, which will be a great venue for this event. At this time, the competition is scheduled to take place between 9AM and 12:45PM Eastern. Both FIRST Tech Challenge and FIRST Robotics Competition matches will be run during this period. Teams will compete in up to 5 matches. Everyone is welcome to attend this portion of the Festival in person, and join the party! The event is free and open to the public, just like all other FIRST competitions. We will have plenty of seating available. Driving directions and parking options for the venue can be found here. Please note that there will be metal detectors at security. Please don’t bring your backpacks. Outside food and beverages are not permitted in the venue!


    For those who can’t make it in person, the event will be webcast. We’ll have more details on viewing options at a later time, and we are working to make the at-home viewing experience well worth your time.