How does touchscreen work?

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0:00 Computer's monitor as input device.
1:22 Lightpen working principle.
2:15 Why the old game console light-gun does not work with a flatscreen TV?
2:51 What is an optical touchscreen and how does it work?
4:33 Easy way to fix the optical touchscreen intercom.
5:16 Resistive touchscreens. How do they work?
6:12 Checking a resistive touchscreen with a multimeter.
7:05 Equivalent schematic diagram of a resistive touchscreen.
9:14 Use of resistive touchscreen in car nav systems.
9:43 Resistive touchscreen compatibility.
11:13 Why it's hard to implement multi-touch on resistive touchscreens?
11:58 Capacitative touchscreens. How do they work?
12:25 What is a capacitor?
13:10 How does self-capacitance surface touchscreen work?
14:53 Reading the touch coordinate. Scanning using the matrix method.
16:28 PCT – projected capacitative touchscreens.
17:25 How does multi-touch work in PCT screens?
18:00 Capacitative touchscreen controllers.
18:52 What is a display module of a smartphone? How easy is it to replace a touchscreen?
20:05 Attaching a resistive touchscreen to Arduino Uno.
20:58 Reading the data of a resistive touchscreen.
21:50 Applying voltage to horizontal grid and reading the X coordinate.
23:43 Plotting X coordinate values. The Serial() function.
25:14 Filtering noise while reading coordinates.
26:22 Plotting both coordinates on the computer.
27:09 Building a digital piano using Arduino and the resistive touchscreen.
29:58 Checking out the piano! :)
30:40 Ron Mattino. Thanks for watching!

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