Go Back   Computer Forums > General Computing > Hardware
Join Computer forums Today

Thread Tools Search this Thread Display Modes
Old 02-10-2011, 04:27 AM   #1
Beta Member
Join Date: Feb 2011
Posts: 2
Default building touch screen at home (nice trick)

Hi there,

I was thinking about building touch screen on my own. Few days ago I've seen a glass table with projector mounted at the bottom. Projector was heading straight at table layer so when we put a piece of paper we get nice display panel.

So, then I found this nice tutorial how to make multitouch pad. However this concept assumes that source of light is outside the box.

Do you have any idea how to connect these two concepts to make cool multitouch display in my table?

teadrinker is offline   Reply With Quote
Old 02-10-2011, 09:54 AM   #2
Site Team
root's Avatar
Join Date: Mar 2004
Posts: 7,872
Default Re: building touch screen at home (nice trick)

that's pretty cool...

it's not going to work for your idea though, as you pointed out, if there is a projector in the box then the light source will not allow the shaddows to pass though the box. (which is what the webcam is detecting to allow the software to work).

what you will need is a real touch screen on top of the table.

something like this
22 Inch 4 Wire Resistive Touch Screen Panel Kit for PC on eBay (end time 27-Feb-11 14:31:47 GMT)

alternativly, with some mirrors and focusing lenses you may be able to take your projector image and display it from the top.
(but then your fingers are going to cast shaddows and obstruct the picture unless you can cast the image from several light sources (projectors or mirrors) at once).

in short... your options for making a touch screen coffee table are.

buy a touch screen monitor and encase it in wood.
or make a projection box and put a touch screen matrix on top of it.

the first option will be the most reliable,
the second option will be the most work.
I didn’t fight my way to the top of the food chain to be a vegetarian…
Im sick of people saying 'dont waste paper'. If trees wanted to live, they'd all carry guns.
"The inherent vice of capitalism is the unequal sharing of blessings; The inherent vice of socialism is the equal sharing of miseries."
root is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -5. The time now is 10:52 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0