Junkyard Challenge B

wlsguy
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Re: Junkyard Challenge B

Postby wlsguy » April 18th, 2010, 2:37 pm

Our season is done so I uploaded pics of our team's device. It won the Ohio State competition.
I also included a video to show how it works.

It was programmed to run at 60.1 seconds and that must have been close enough.
I saw several machines that look almost like it.

If you have a Vex System, 4 motors, a few of the extensions for the wires, and the programming kit, it is really easy to make.
The box took longer to build and paint than the entire device. The vex will run on 4 batteries so no issues.
The program was done in easy C from Vex.
If you have something else it will work also but easy C was easy to work with (hence the name)
If you have everything else, the program is available as a 7 days trial. (thats what we used).

Good Luck

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Re: Junkyard Challenge B

Postby mrcadman » April 20th, 2010, 12:42 pm

I have received an email clarification now clearly stating the best score time.

ORIGINAL MESSAGE:
In a 2nd tiebreaker, is a score of 60.1 better than a score of 60.99?
It has been defined that actions inside 60.99 seconds shall score. This
strongly implies that 60.99 is the most perfect score. <snip>
Please clearly define what is considered a perfect score, 60.00 or 60.99. Thanks very much.

ANSWER:
"For tie breaking purposes, 60.00 is considered perfect, so 60.10 is better than 60.99. This is the way it will be scored at Nationals."

I am very pleased this is clearly written now. And yes, the scoring sheet reflects this perfectly.
(Now, if they'd just adjust the scoring decimals out a few places on the spreadsheet and use audio or video scoring)
:)

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Re: Junkyard Challenge B

Postby bearasauras » April 21st, 2010, 3:24 pm

As far as I can tell, the excelsheet will show 60.99 for col K (7. Time of device operation (sec))

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Re: Junkyard Challenge B

Postby bubblebrian » May 9th, 2010, 10:55 am

our team got DQ'd at regionals, and last place at state :oops:
hopefully we do good at nationals
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Re: Junkyard Challenge B

Postby doctor » May 11th, 2010, 7:30 pm

for nationals does anyone know how they're gonna time it to make it as fair as possible?
cuz i'm betting half the teams will have electronics and motors
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Re: Junkyard Challenge B

Postby StampingKid » May 12th, 2010, 6:40 am

Even with computerized timing it is going to be hard to eliminate some chance or human element as the competitor still needs to drop the ball on the count even if the count triggers the computer. We could get it down to 60.00 and 60.10 ten out of ten times by programming to 59.9 but that was only good for second.
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Re: Junkyard Challenge B

Postby wlsguy » May 12th, 2010, 7:28 am

If they use the microphone method, the error from the judges is eliminated. The computer "speaks" the 3,2,1, go tones and the team members drop their own golf balls to start the device. If you don't do well with this method, it's all on you.
I would recommend checking out the video made by the guy from Mentor and insuring you are ready for that type of timing system.

Hopefully the actual timing method will be announced so everyone can prepare.

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Re: Junkyard Challenge B

Postby doctor » May 12th, 2010, 9:19 am

what video?
can u post a link?
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Re: Junkyard Challenge B

Postby wlsguy » May 12th, 2010, 12:44 pm

This is the link. If it doesn't work, search youtube for junkyard challenge.

http://www.youtube.com/watch?v=LmU-_o_-uOE

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Re: Junkyard Challenge B

Postby StampingKid » May 26th, 2010, 7:09 am

Does anyone know if the predictions came to fruition and how many perfect scores were there at Nationals? And how did they time the devices?
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Re: Junkyard Challenge B

Postby ichaelm » May 26th, 2010, 8:13 am

Well I know I got a perfect score, and we got 8th place. We took a video and timed it at 60.2. But they were using 5 people with stopwatches! So idk if they got that too. It just came down to my fingers and their fingers.

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Re: Junkyard Challenge B

Postby mrcadman » May 26th, 2010, 11:21 am

Meh,
Ours timed out to 60.0002 according to our video, and the same given our jumper settings showed on the device display.
The judges even showed the kids a stopwatch with an even 60.00.
14 teams managed to get inside that 0.0002 seconds. Amazing!
We just appreciate that they at least took the event seriously enough to not use a sun-dial! An event that demands perfect time, scored by 5 teens with stopwatches, two were looking into the crowd. Then on the last trip look down and then pushes their buttons.

We are hopeful that someday, this little Scioly organization or a University even, will manage to obtain the same technology and master science as well as........ middle school children.
But it was fun. The kids learned science and technology. Unfortunately, they also learned that all their hard work and practice came down to 5 teen's thumbs. I suppose that's fair on a micro-time event, since we all know humans can be so attentive and predictable all day, right?

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Re: Junkyard Challenge B

Postby brobo » May 26th, 2010, 11:28 am

Isn't the topic for JYC suppsoed to be decided the week after Nationals? If so, it would be really cool if someone could inform the rest of us the topic the moment it comes out! I already have my pencils, ducttape, and bucket of random stuff ready, so now I just need the goal...

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Re: Junkyard Challenge B

Postby gyourkoshaven » May 26th, 2010, 11:33 am

The committee meetings began on Sunday, I believe, and the tentative events list should come out in a week or two (If it's like last year). However the task won't be known until the rules come out.
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2011 (Co-captain): Regionals-1, States-1, Nationals-11 :D

Nationals: Aquifers-37, Compute This-13, Dynamic Planet-25, Ecology-6, Experimental Design-7, Junkyard-33

Moving to C...

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Re: Junkyard Challenge B

Postby haven chuck » May 26th, 2010, 12:47 pm

mrcadman wrote:Meh,
Ours timed out to 60.0002 according to our video, and the same given our jumper settings showed on the device display.
The judges even showed the kids a stopwatch with an even 60.00.
14 teams managed to get inside that 0.0002 seconds. Amazing!
We just appreciate that they at least took the event seriously enough to not use a sun-dial! An event that demands perfect time, scored by 5 teens with stopwatches, two were looking into the crowd. Then on the last trip look down and then pushes their buttons.

We are hopeful that someday, this little Scioly organization or a University even, will manage to obtain the same technology and master science as well as........ middle school children.
But it was fun. The kids learned science and technology. Unfortunately, they also learned that all their hard work and practice came down to 5 teen's thumbs. I suppose that's fair on a micro-time event, since we all know humans can be so attentive and predictable all day, right?

unsubscribed

I'm guessing you're from Bearden? If so, you were right next to us (Strath Haven) when you went. First off, I just want to say that your device looked amazing, with the timing display and lighthouse top, and it was really cool to watch. Anyway, they take the median of the 5 times, so even if there was 1 perfect timer, it might have been the highest or second highest, and the median score was probably around 59.99, thus dropping you below all the teams who got scored 60-60.99. It's disappointing that they did the timing this way, since there were better ways out there (look through this thread) that wouldn't have been impossible to use, but for what it's worth, I definitely think you guys should have medaled.
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