Digial Scale?

Discussion in 'NDS - Emulation and Homebrew' started by oORYUOo, Oct 1, 2008.

Oct 1, 2008

Digial Scale? by oORYUOo at 11:14 AM (2,496 Views / 0 Likes) 24 replies

  1. oORYUOo
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    Newcomer oORYUOo Newbie

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    Well I read somewhere that the touch screen is pressure sensative, would you be able to mod it to weigh...stuff? Like a digital scale. BTW Wassup everyone nice to join the communit [​IMG]
     


  2. Wabsta

    Member Wabsta you fight like a dairy farmer

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    I don't think the screen is pressure sensetive... And if so, I don't think the DS will even notice if you put something as lite as a stylus on it, and I don't think it can handle to much pressure...
    So imo it's kinda unusefull...

    Welcome btw!
     
  3. saxamo

    Member saxamo Spaaaaace!

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    Yeah, the screen is not sensitive to diff. pressures. The touch screen has an on/off sort of configuration where when you touch a point on the screen, it registers as making contact, and when you let go, the contact is broken. Sorry!
     
  4. VatoLoco

    Member VatoLoco Don't crush that dwarf, hand me the pliers.

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    ...and who wants coke residue on their touch screen?
    [​IMG] j/k
     
  5. OrcMonkey©

    Banned OrcMonkey© Banned

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    then why is ds colors the painting hombrew pressure sensitive/
     
  6. playallday

    Member playallday Group: GBAtemp Ghost

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    What about colors? (or whatever it's name is)
     
  7. paul3100

    Member paul3100 GBAtemp Advanced Fan

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    Actually i think you guys are wrong!

    There is those art games for the ds which allow you to paint apples and all that sort of guff but you can draw lightly or harder depending how hard you press the stylus down, try it..

    Though i wouldn't imagine it could ever be used as a scale

    paul

    EDIT: Damn beaten too it lol
     
  8. CPhantom

    Member CPhantom The Noob :(

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    Lol, I can see the headlines now:

    "Kid busted weighing cocaine on Nintendo DS handheld"
     
  9. Balrogs.Pain

    Member Balrogs.Pain GBAtemp Fan

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    The parents of this boy think the reason being was he was playing to many violent video games like grand theft auto.
     
  10. Gerinych

    Member Gerinych GBAtemp Fan

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    Not exactly possible. Since this is not a multi-touch screen, the weight should be concentrated in one spot. So you can't measure coca unless you put in in a test tube or something [​IMG]
     
  11. redviper

    Newcomer redviper Advanced Member

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    The display is actually extremly strong. Watch this video of a guy doing a stress test to the DS touchscreen:

     
  12. playallday

    Member playallday Group: GBAtemp Ghost

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    haha that's a demo DS Lite hes trying to kill!
     
  13. Sweater Fish Del

    Member Sweater Fish Del GBAtemp Regular

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    Yeah, the touchscreen has some pressure sensitivity, but it's nowhere near accurate or regular enough to use as a scale. It also doesn't seem to be able to detect very light things at all (at least not when they're spread over a larger area of the touchscreen than the tip of the stylus).

    I wanted to make a "game" called How Many Licks Does It Take To Get To The Tootsie Roll Center Of A Tootsie Pop? but testing showed that I couldn't get the screen to register my tongue no matter how hard I licked.


    ...word is bondage...
     
  14. klyick

    Newcomer klyick Advanced Member

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    This is actually a great idea. Not only is it easily doable, its really creative. I believe it could be done by using a tripod or perhaps a four post stand. Then, the force would be spread out over the points, and it would be detectable by the touchscreen.

    It would need to have a calibrate feature, but this sounds really possible, not to mention useful.


    -Klyick
     
  15. DanTheManMS

    Member DanTheManMS aka Ricochet Otter

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    The DS screens are technically capable of pressure sensitivity, but with a few minor caveats:

    1. Not all DS systems have the same pressure-sensitivity. This is why the Colors! application has a calibration feature. Before it had this, I could never get the application to paint more than a very light outline while other DS users complained of it being overly-sensitive.
    2. Due to this, you will NEVER see pressure-sensitivity in a commercial DS game. The touchscreen is controlled by the ARM7, and third-party developers are not allowed to modify the ARM7 at all, only the ARM9. The official ARM7 binary only recognizes two states: touched and not touched. It doesn't register sensitivity at all.

    Due to the lack of standardized pressure thresholds on different DS units, a scale would not really be all that feasible.
     
  16. klyick

    Newcomer klyick Advanced Member

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    I'm thinking a calibrate feature would make this a non issue.

    Therefore, I respectfully disagree.
     
  17. playallday

    Member playallday Group: GBAtemp Ghost

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    Really? That's too good!
     
  18. Chrono_Tata

    Member Chrono_Tata GBAtemp Advanced Fan

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    Let me guess, you were testing this while playing Doki Doki Mahou Shinpan?
     
  19. oORYUOo
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    Newcomer oORYUOo Newbie

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    Guess it wont work. Oh well it was just an idea. Thanks for everyones input on this subject.
     
  20. klyick

    Newcomer klyick Advanced Member

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    Well, I took the initiative, and tried to code a app that would do the trick based on a four point system, AKA a small four legged support that would hold the weight that was to be measured.

    I was successfully able to weigh accurately weights ranging from 2 grams to about 250 grams. It did require a calibration feature to be used every time, as I had stated earlier.


    So, to all you naysayers, neener neener.
     

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