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search: Posts Made By: Hitchhiker 42
Forum: Programming Today, 04:25 PM
Replies: 9
Views: 780
Posted By Hitchhiker 42
Re: Why the sudden burst of code postings?

Robot Code 2016 (https://github.com/FullMetalFalcons/Robot-Code-2016) is our robot code for this previous year. Also, what Devin said.
Forum: Games/Trivia Today, 08:31 AM
Replies: 10
Views: 132
Posted By Hitchhiker 42
Re: CD's Unofficial Caption Contest #652

Unfortunately for the person in the picture, the star of the photo was the giant donut, not the person. Looks like the photographer got hungry.
Forum: General Forum Yesterday, 10:37 PM
Replies: 1
Views: 217
Posted By Hitchhiker 42
Re: Suffield shakedown

It seems last year registration opened up on kickoff day: https://www.chiefdelphi.com/forums/showthread.php?t=141103&highlight=suffield. It might be the same this year again.
Forum: FIRST Tech Challenge Yesterday, 10:59 AM
Replies: 3
Views: 140
Posted By Hitchhiker 42
Re: [FTC]: [FTC]: FTCRoot -- View teams and meet results

I like it! Just one thing I noticed - seems to be about 19 teams at the intersection of the Prime Meridian and Equator. Is there a way you could handle teams that don't have location data differently?
Forum: Math and Science 12-28-2016, 10:18 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

Drat... I tried it using the slope at the end of the interval instead of at the beginning, and it turned out to have a tad bit more error compared to the actual function.
Forum: Math and Science 12-28-2016, 10:05 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

I redid the midpoint spreadsheet - now at t=9.96s with dt=0.01s, the error is only 0.96. I replaced the Am column with the Am = sqrt(3*x').

Now to search for a possible explanation...
I did find...
Forum: Games/Trivia 12-28-2016, 07:51 AM
Replies: 15
Views: 312
Posted By Hitchhiker 42
Re: CD's Unofficial Caption Contest #651

This will be totally helpful during load-in at our next event!
Forum: Math and Science 12-25-2016, 04:46 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

I see... so that column is in terms of x', not t. I've updated the spreadsheet to reflect that and it seems to show that the Euler method does better.
dt = 0.01s, error measured at t=3s.

Euler...
Forum: Math and Science 12-24-2016, 05:39 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

Yes, sorry about that. That was what I meant.
Forum: Math and Science 12-24-2016, 04:43 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

Could you explain what this means? I'm not sure I understand...
Forum: Math and Science 12-24-2016, 03:22 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

I took the derivative of the actual velocity function. Is this not correct?
Forum: Math and Science 12-23-2016, 09:53 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Forum: Math and Science 12-23-2016, 09:52 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

Not sure. Must have been really tired :) . I did that over, and also added an error column to show the difference between Xa and the predicted X (Xm or Xe).
I set dt = 0.01 s and compared the errors...
Forum: Math and Science 12-23-2016, 03:58 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

I've attached your spreadsheets modified for 1/4*x^3 + 1.
It seems that the Euler method does approximate it better.
Forum: General Forum 12-22-2016, 06:25 PM
Replies: 16
Views: 1,401
Posted By Hitchhiker 42
Re: Kick-off Web Link?

Right here on the blue alliance:
https://www.thebluealliance.com/ (www.thebluealliance.com)
Screenshot (https://gyazo.com/90e9d6b2878d9fdd8b4d415f4b1ac1e9)
Forum: Math and Science 12-22-2016, 06:23 PM
Replies: 31
Views: 835
Posted By Hitchhiker 42
Re: numerical solution of differential equations

As I understand it, the main difference between the Euler method and the Midpoint method is that the midpoint method takes the slope by connecting a point behind and a point ahead of the given point....
Forum: General Forum 12-21-2016, 04:15 PM
Replies: 62
Views: 7,243
Posted By Hitchhiker 42
Re: FRCTop25 Popularity Poll For Charity Results

Wondering how 558 and 230 did...
Forum: General Forum 12-21-2016, 04:13 PM
Replies: 12
Views: 1,564
Posted By Hitchhiker 42
Re: Best use of bumpers yet

Stick it on a swerve drive and be able to control it while sitting on it :) . Ultimate laziness device!
Forum: Games/Trivia 12-20-2016, 11:43 AM
Replies: 16
Views: 372
Posted By Hitchhiker 42
Re: CD's Unofficial Caption Contest #650

Little do we know that the robot part's name is Chris and the person Chris is just a great basketball (Stronghold?) player.
Forum: NI LabVIEW 12-19-2016, 11:26 AM
Replies: 3
Views: 200
Posted By Hitchhiker 42
Re: Image Proccesing- LabVIEW

The vision processing algorithm really shouldn't change between auto and tele-op. Really, if you have an automated feature in tele-op for aiming, even the robot motion shouldn't be different.

I'm...
Forum: General Forum 12-17-2016, 05:11 PM
Replies: 63
Views: 10,219
Posted By Hitchhiker 42
Re: Five Person Drive team in 2017

We get to control blimps! Wooo
Forum: General Forum 12-15-2016, 07:49 PM
Replies: 19
Views: 2,223
Posted By Hitchhiker 42
Re: 3,2,1, Liftoff! (DLC Pack 3 Speculation)

Not possible considering Frank himself said that the timing of auto was not going to change - too many teams already sit out of auto for them to miss even more of the game.
Forum: General Forum 12-14-2016, 09:41 PM
Replies: 1
Views: 614
Posted By Hitchhiker 42
Re: [BTL] TONIGHT Controls Systems with Jared Russell from 254!

Hope I can watch this weekend, once exams take a break!
Forum: General Forum 12-14-2016, 06:22 PM
Replies: 164
Views: 22,213
Posted By Hitchhiker 42
Re: New AndyMark Product Game Hint???

The word "conveyor" seems to stir up something in my mind... Maybe those fragmented pieces of conveyor belts hidden all over the images they released in the DLC packs?
Forum: General Forum 12-14-2016, 08:36 AM
Replies: 15
Views: 996
Posted By Hitchhiker 42
Re: Meeting Schedule

It's important as a team leader to make sure the other students understand that they need to compromise. Beyond that, what our team does during build season is we never meet Sundays (partly because...
Showing results 1 to 25 of 424

 
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