Capacitive Stylus (finger only screens)
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From: Beverly Howard on 6 Jan 2010 17:34 After a decade of depending on styli, the current cropy of "finger only" devices really underscore how nice a stylus can be. Anyone here old enough to remember that socket mount ic chips were shipped stuck to a small block of black foam? That foam was conductive to assure that static would not build between any pins... ....so, on a hunch; Dug out a very old (palm) stylus that had a metal body with screw on tips. Removed the pointer tip Cut a small piece of conductive foam Compressed and inserted the foam into the end of the tube with about 1/8" exposed. Bingo... a capacitive touch stylus. Beverly Howard
From: Todd Allcock on 6 Jan 2010 19:14 Sheer genius, Bev... Be careful where you drill the long hole in the top of Rebecca's iPod Touch to hold the stylus! ;) Happy New Year! "Beverly Howard" <Bev(a)NoSpamBevHoward.com> wrote in message news:ekmjeByjKHA.4500(a)TK2MSFTNGP06.phx.gbl... > After a decade of depending on styli, the current cropy of "finger only" > devices really underscore how nice a stylus can be. > > Anyone here old enough to remember that socket mount ic chips were shipped > stuck to a small block of black foam? That foam was conductive to assure > that static would not build between any pins... > > ...so, on a hunch; > > Dug out a very old (palm) stylus that had a metal body with screw on tips. > > Removed the pointer tip > > Cut a small piece of conductive foam > > Compressed and inserted the foam into the end of the tube with about 1/8" > exposed. > > Bingo... a capacitive touch stylus. > > Beverly Howard
From: Todd Allcock on 7 Jan 2010 11:02 On a more serious note than my last reply, do you notice an improvement in accuracy using the stylus? I find the capacitive touchscreen on the iPhone is very "course" but I don't know if that's inherent in the technology itself, or just due to my big fat fingers. The only commercial stylus I've seen for the i's has a big fat end almost the size of a pinkie finger rather than a point. Your invention sounds more practical if it improves accuracy. "Beverly Howard" <Bev(a)NoSpamBevHoward.com> wrote in message news:ekmjeByjKHA.4500(a)TK2MSFTNGP06.phx.gbl... > Dug out a very old (palm) stylus that had a metal body with screw on tips. > > Removed the pointer tip > > Cut a small piece of conductive foam > > Compressed and inserted the foam into the end of the tube with about 1/8" > exposed. > > Bingo... a capacitive touch stylus. > > Beverly Howard
From: Beverly Howard on 7 Jan 2010 12:08 >> improvement in accuracy << yes. Have also found that there is a commercial version of what I have at http://tenonedesign.com/stylus.php demo at; http://www.youtube.com/watch?v=LvnfXXulOIY ...they managed to bypass the case drilling ;-) There's a raft of diy approaches off of the following; http://www.youtube.com/watch?v=_y9vrSShEIs http://www.youtube.com/watch?v=fKG7kP70CIQ Beverly Howard
From: "Werner "Menneisyys" Ruotsalainen" on 15 Jan 2010 20:50
Wow! Thanks for the heads-up (and the YouTube links!) I'll test this with my (aftermarket, three-in-one) iPAQ 2210 stylus. Beverly Howard <Bev(a)NoSpamBevHoward.com> wrote in news:ekmjeByjKHA.4500(a)TK2MSFTNGP06.phx.gbl: > After a decade of depending on styli, the current cropy of "finger > only" devices really underscore how nice a stylus can be. > > Anyone here old enough to remember that socket mount ic chips were > shipped stuck to a small block of black foam? That foam was > conductive to assure that static would not build between any pins... > > ...so, on a hunch; > > Dug out a very old (palm) stylus that had a metal body with screw on > tips. > > Removed the pointer tip > > Cut a small piece of conductive foam > > Compressed and inserted the foam into the end of the tube with about > 1/8" exposed. > > Bingo... a capacitive touch stylus. > > Beverly Howard |