Thanx a lot nima !
Btw this article is great !
I will post any result when I have more time to test all this.
Cheers
_j

The wires come from the midpoints of the screen edges.

exactly.

Let's say you connect left and bottom to ground and right and top to +5V and the resistors are 500 ohm. Touching the center will give a left-right and top bottom value of 500.

I'm gonna test that soon then.
Many thanx for your help gentlemen
I'll update the post when this is done...
Oh, and by the way, I found the references:
touchscreen Multitouch 10641 A.
Cheers.
_j.

Hi.
It's a 5"x4" 4-wire resistive touchscreen by Microtouch (now 3M).
Don't have the reference number here.
I tried at that time to ask to 3M technical specifications but they just told me that this product was not made anymore, that they also have a 30$ usb micro-controller for this, but they would not sell it under 100 or so pieces.
When I asked them to give me any customer companies contact to order this usb ctl from them, I never had any answer.
That's why I thought about Arduino
Thanx for your help!
_j

Hello all.
I am new on this forum (and in electronics in general), so thanx for your patience.

I have a 4-wire resistive touchscreen and I would like to know if it would be possible to plug it on the arduino (and later get xy values via maxmsp) ?
And if yes, a quickly explanation on how to plug those 4 wires would be great.
I've googled for hours, and I couldn't find anything, except that those wires indicate Yup, Xright, Ydown and Xleft.
As the touch screen is resistive only, would I need other external hardware or does the Arduino (and a home-made shell) is enough ?

Thanx again, and my apologies if this is a very stupid question.
_j.