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Greyhound Challenge - Florida

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  • Greyhound Challenge - Florida

    Lessons learned from the Greyhound Challenge:
    Samatha module has issues also (but don't take this post as world coming to an end - the site worked through the issues as they came up, this is more towards helping teams reduce/eliminate issues). Our robot lost comms three out seven qualifier matches. In last qualifier match of the day (picture enclosed), three of the four robots lost communications. This is my low sampling GUESS (ie, no real analysis or engineering rigor) of what may be the issue - You should mount the Samantha module horizontally. Ours is vertical. As the day went on, more robots started losing comms. So the vibrations may be loosening the connection. Our problem started after violent collision with another robot that jumped the cliff in automous as we tried to dump in the stationary goal. When three robots lost comms in a match, two were vertical, one was horizontal. But the horizontal one had a lot strain on the connector and appeared to burn out their module. The robot that worked was horizontal and had no Samantha issues during the matches.

    After that match, our module was taken apart and the connector housing "tightened". We then completed the replay of the last match, a test match, and two matches in the semi-finals with no issues.

    If the robots need to stay on the field due to a ruling, the robots should be turned off. While they may not be moving, they may still be putting power to a jammed wheel and toasting the motor. When you use communications, whether Bluetooth or Samantha, the robot will continue to do the last command.

    As for game play - drivers need to be very alert in that last 30 seconds and not touch an opponents goal. Sometimes with the crowd of up to four robots on one side, up to four rolling goals, and attempting to get on the bridge, you don't realize you are moving the opponents rolling goals so you can get to the bridge since the driver is focused on getting to the bridge.

    Be careful about bumping into opponents dispenser. After dumping into the stationary goal, it is easy to back up into opponents dispenser.

    Teamwork - A few matches were lost because a robot couldn't get on the bridge after a few attempts, would not get out of the way to let their partner get on.

    Unofficial Scores of the qualifier matches:
    1369/2425 4-0 over 506/4099
    4228/1902 32-14 over 3830/499
    3045/4228 15-12 over 4227/499
    506/1369 10-8 over 3830/3045
    2425/1902 16-13 over 4099/4227
    499/4228 32-16 over 506/2425
    1369/4227 26-23 over 1902/3045
    3830/4227 32-14 over 4099/4228
    506/3045 60-0 over 3830/2425
    1902/4099 15-10 over 499/1369
    4099/3045 15-11 over 2425/4228
    3830/506 38-32 over 499/1902
    4227/2425 16-10 over 1369/3830
    1369/4099 46-22 over 499/3045
    4228/506 40-34 over 1902/4227
    506/4227 45-23 over 4099/499
    3830/1902 21-6 over 3045/2425
    4228/3830 24-10 over 1369/1902
    Attached Files

  • #2
    Why not touch an opponent's goal?

    Originally posted by 2010FTC3830 View Post
    . . . . drivers need to be very alert in [the] last 30 seconds and not touch an opponents goal. Sometimes with the crowd of up to four robots on one side, up to four rolling goals, and attempting to get on the bridge, you don't realize you are moving the opponents rolling goals so you can get to the bridge since the driver is focused on getting to the bridge. . . .
    Why do (or did) the drivers need to be careful not to touch an opponent's goals during the last 30 seconds? As our team understands the rules, there is nothing preventing one alliance from touching the rolling goals of the other alliance, during any part of the game, including the last 30 seconds.

    According to our understanding, the opponent alliance's goals can never be "possessed" without penalty, but they can always be touched without penalty, if no other rules are violated in the process.

    It is true that one alliance is not allowed to interfere with the "balancing" of the other alliance's bridge, but that rule says nothing about interfering with the other alliance's attempts to move their goals over to their bridge, if their goals are relatively far from their bridge, for example.

    Did the referees interpret the rule about not interfering with the balancing of the bridge as meaning that you cannot touch the other alliance's goals at all during the last 30 seconds? Or are you referring to something else, like the risk of tipping a goal?

    Comment


    • #3
      I tried to get it clarified as my son is the driver and I am in the stands getting relayed from him later. We had a few penalties during the day and it was not always clear as to why and in blur of the day, trying to remember the events don't always work. In this case we bumped their rolling under their balancing bridge during the end game which prevented them from balancing. You don't get a list of your penalties so you don't really know for sure as to why.

      You are correct, and I erred in my writing. You can move their goals (but not possess) just be careful where you bump it.

      When we were penalized, it did not change the outcome of the match.

      Comment


      • #4
        Thanks for all the information! Definately going to mount the samantha horizontally.
        Do you have any videos of matches? I'd love to see other robots running!

        Comment


        • #5
          Rank Team QP RP (7 Matches)
          1. 506 10 113
          2. 4228 10 111
          3. 1902 8 132
          4. 4227 8 129
          5. 1369 8 83
          6. 4099 6 93
          7. 3830 6 84
          8. 3045 6 82
          9. 2425 6 56
          10. 499 2 129


          Greyhound Challenge Qualifying Tournament, November 6, 2010. Lyman High School in Longwood Florida.

          Winning Alliance
          4228 (Alliance Captain) Gears Of Other Dimensions (G.O.O.D.)
          1369 Minotaur

          Finalist Alliance
          4099 (Alliance Captain) Screaming Eagles
          3045 Built And Dangerous (B.A.D.)

          Judged Awards
          Inspire Award - 1902 Exploding Bacon
          Rockwell Collins Innovate Award - 3830 SkyNet
          PTC Design Award - 1369 Minotaur
          Think Award - 499 NanoFusion
          Connect Award - 2425 Hydra Robotics
          Motivate Award - 4227 Kiss My Bot

          Comment

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