I have spent WAYYYY too much time tweaking DIY styli, and....

Discussion in 'iPad DIY' started by texaslonghorn, Jul 1, 2010.

  1. texaslonghorn

    texaslonghorn iPF Novice

    Joined:
    Jun 21, 2010
    Messages:
    43
    Thanks Received:
    1
    Trophy Points:
    0
    Location:
    Atlanta
    Ratings:
    +1 / 0
    Here are a couple thoughts for anyone interested.

    First - the metal barrel. I had success with two kinds. One was an old metal barrel pen. It was anodized aluminum and I had to remove the anodized finish for proper conductance. The second - far cooler - is an old Xacto knife. Shined it up nicely. Also does a good job of taking those big rubber things for your hand - I hate skinny pens and always add something to give me better grip.

    Second - the tip. This has been driving me nuts. Like many others, I can't stand the big fat tip on commercial styli. So I started to make much smaller tips, internally reinforced with rubber and other resilient yet stiff materials. I made several that looked great, held the tip shape well - but didn't function on the screen. After hours and hours, I think I figured it out - I believe that the stylus must have a minimum surface area to work correctly. I don't know the exact measurement, but it is pretty close to those fat points on commercial styli. So while you may be able to make a slightly smaller tip, you can't go too much smaller or it won't function.

    I have done some research into materials other than the foam and am requesting some samples. While I don't think that the conductivity of the material will change the surface area requirement, I am going to fart around with it anyway.

    I need professional help.....
     
  2. Matth3w

    Matth3w iPad Ninja

    Joined:
    May 26, 2010
    Messages:
    2,031
    Thanks Received:
    2
    Trophy Points:
    0
    Ratings:
    +2 / 0
    I'm subscribing just to see what you come up with
     
  3. NumbLock

    NumbLock iPad Ninja

    Joined:
    May 2, 2010
    Messages:
    2,008
    Thanks Received:
    32
    Trophy Points:
    48
    Location:
    Switzerland
    Ratings:
    +32 / 0
    Cool project! Think about conductive foam that they ship microchips in. We vave a ton at work, but our version is kind of crumbly.
     
  4. texaslonghorn

    texaslonghorn iPF Novice

    Joined:
    Jun 21, 2010
    Messages:
    43
    Thanks Received:
    1
    Trophy Points:
    0
    Location:
    Atlanta
    Ratings:
    +1 / 0
    I am trying to find a suitable alternative to that foam. That is the hard part.
     
  5. CMFox

    CMFox iPad Fan

    Joined:
    May 27, 2010
    Messages:
    160
    Thanks Received:
    0
    Trophy Points:
    0
    Location:
    Pacific NW
    Ratings:
    +0 / 0
    Photos of your progress?

    This sounds like fun. Keep spending the time.

    CM
     
  6. MikesTooLz

    MikesTooLz Super Moderator Staff Member

    Joined:
    May 7, 2010
    Messages:
    2,361
    Thanks Received:
    19
    Trophy Points:
    0
    Location:
    Miami, FL
    Ratings:
    +20 / 0
    I just use a finger.
    Its cheaper than anything else and always works.
     
  7. Linkreincarnate

    Linkreincarnate iPF Novice

    Joined:
    Jun 9, 2010
    Messages:
    82
    Thanks Received:
    0
    Trophy Points:
    0
    Location:
    Georgia
    Ratings:
    +0 / 0
    You could try some wire glue on various objects. It's definitely conductive but I'm not sure how well it would play with the screen. I'd recommend mixing with a machine for a nice smooth coating. Maybe it's conductive enough to be covered in another material like microfiber and still work?
     
  8. orisonmarden

    orisonmarden iPF Novice

    Joined:
    Mar 12, 2010
    Messages:
    20
    Thanks Received:
    0
    Trophy Points:
    0
    Location:
    Bali, Indonesia
    Ratings:
    +0 / 0
    :shakehand:
     
  9. snormansell

    snormansell iPF Noob

    Joined:
    Jul 6, 2010
    Messages:
    4
    Thanks Received:
    0
    Trophy Points:
    0
    Location:
    Atlanta
    Ratings:
    +0 / 0
    I read somewhere that electrostatic bags work well. Just roll one up into a thin tube and it works well. I of course was unable to find one to test this with just as soon as I started looking for one...
     
  10. Linkreincarnate

    Linkreincarnate iPF Novice

    Joined:
    Jun 9, 2010
    Messages:
    82
    Thanks Received:
    0
    Trophy Points:
    0
    Location:
    Georgia
    Ratings:
    +0 / 0
    Wire glue has been tested and works like a charm. Video proof. Works on thick gloves as well. I used it on a paintbrush. Just pick out any bit that stick out while drying and it is fine for the screen.
     

Share This Page

Search tags for this page

conductive foam alternative

,

conductive foam alternatives

,

conductive foam substitute

,

household items that contain conductive foam

,
substitute for conductive foam