touch screen stylus

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I have a Winbook that has a touch screen and I have a stylus that doesn't work very well.  As the touch screen is capacitive, is there something I can do to the stylus, like adding a capacitor and a battery, to make it work better?  I am not sure how the touch screens work, but they seem to work better with a finger than a stylus, but my fingers are big enough that I have a hard time touching the right thing, so I thought a stylus would be the way to go, but none of the ones I bought work very well, so I am wondering if I can make an active stylus that will work.  Any ideas?

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Touch styluses are simply conductive rods, with a soft conductive rubber at the tip.  If you're having trouble with a specific stylus, I'd guess the issue is primarily with the soft conductive rubber tip.  I don't think there's anything you can do with a battery or capacitor to help matters.  In a capacitive touch screen, >>you<< are the capacitor.

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"Wisdom is always wont to arrive late, and to be a little approximate on first possession."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

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This is what I use.

 

http://www.ebay.com.au/itm/Unive...

 

Ross McKenzie ValuSoft Melbourne Australia

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I once had a pen with one of those rubber tips on the top. Worked quite well, though I didn't really need yet another thing to keep with me.

 

"We trained hard... but it seemed that every time we were beginning to form up into a team, we would be reorganized. I was to learn later in life that we tend to meet any new situation by reorganizing. And a wonderful method it can be of creating the illusion of progress while producing confusion, inefficiency and demoralization." Petronius Arbiter, approx. 2000 years ago.

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Hey Ross,

It says on eBay they may not ship to the US.  I need to contact them.

 

If I am the capacitor, why couldn't I charge up a capacitor and attach one end to some of that black conducting foam.  I probably shouldn't use too big of one or it will blast the screen apart.  Do you think that would work?  I need one with a small tip.  The WinBook 7 is pretty small.

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Capacitive touch doesn't work by you connecting up a charged capacitor, be that capacitor your body or a component.  It works by detecting the change in capacitance.  This is generally done by charging the capacitance and observing the TC, or using the capacitance in some other circuit and observing changes in the behaviour.  In all cases, it is the device which charges the capacitor (you).

 

I have observed some touch screen devices have trouble accurately detecting touches when plugged into mains, especially if they are charging through a cheap USB charger.  I suspect improper isolation in the charger, and poor tolerance for that in the device.  I expect this won't help you since your winbook almost certainly came with a 'good' charger free from such defects.
 

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"Wisdom is always wont to arrive late, and to be a little approximate on first possession."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

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Mark,

 

There are dozens of suppliers of the same units. There is no embargo against the US... as far as I know. laugh

Ross McKenzie ValuSoft Melbourne Australia

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valusoft wrote:

Mark,

 

There are dozens of suppliers of the same units. There is no embargo against the US... as far as I know. laugh

 

But there's probably a regulation about importing styli in wooden boxes.

 

"We trained hard... but it seemed that every time we were beginning to form up into a team, we would be reorganized. I was to learn later in life that we tend to meet any new situation by reorganizing. And a wonderful method it can be of creating the illusion of progress while producing confusion, inefficiency and demoralization." Petronius Arbiter, approx. 2000 years ago.

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Ross,

 

I'm pretty sure there is an embargo against the US.  I'm sure those are Australian ships floating around outside the Golden Gate Bridge that prevent ships carrying touch screen styluses from entering the country.  It's been going on for a while now.  wink

 

Mark

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Some say the conductive fiber tip is better for writing and lasts longer.  I bought this one on Amazon to play with my Galaxy J3.  It's much better than trying to type on the "keyboard" with my finger.

 

I'm about done playing with my smart phone.  Anybody want to buy it cheap?   smiley

 

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That looks interesting.  But does the metal mesh scratch the screen?

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I don't think it is metal.  It is called conductive fiber.  I guess when I put milk on my oatmeal I get conductive fiber.  smiley

 

I just noticed the sellers on Amazon say it is long lasting.  The reviewers say otherwise.

 

Anybody want to buy a slightly used stylus?  smiley

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I ordered one from eBay:  http://www.ebay.com/itm/321624192872?_trksid=p2057872.m2749.l2649&var=510516168421&ssPageName=STRK%3AMEBIDX%3AIT that says metal mesh micro fiber.  It only cost $1.45.  I guess I don't want to buy  a used one.