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Topic: Touch screen types (Read 1 time) previous topic - next topic

4dEFCON

brucedjones:

I recently purchased a book Practical Arduino - Cool Projects for Open Source Hardware and chapter 8 is all about interfacing with the Nintendo DS touch screens - the author did some pretty cool stuff with it!   All the info about how to interface and the source code can be found here:

http://www.practicalarduino.com/projects/touch-control-panel

AWOL

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Touch-screens usually use a transparent (tin oxide) grid over the display and capacitively sense


Is that why you need one of those stylus things then?

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tin oxide

sp. "tin-doped indium oxide (aka ITO)"
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

mowcius

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Touch-screens usually use a transparent (tin oxide) grid over the display and capacitively sense when a finger is at a particular spot.

Capactive touch screens do.

Most touch screens are resistive and use 2 layers that press together and a microcontroller then reads the resistance (like in a linear potentiometer).

Touch screens are going towards the capactive type as people often don't want to use a stylus and capacitive is much more responsive than resistive as no force is required.

Mowcius

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