How does the Touchscreen Work? #electronics #diy #engineering #arduino #arduinoproject

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0:00 How did the light pen work?
1:11 Why do old monitors have flicker effect?
1:59 How did older game consoles' light guns work?
2:41 When was the traditional touch screen developed?
2:57 How does the optical touch panel of an intercom work?
4:09 Why do intercom panels use touchscreens?
4:39 How to fix a malfunctioning intercom touchpad?
5:15 How does the resistive touch screen work?
9:43 Resistive touch screen electric interface
11:59 How does the capacitative touch screen work?
15:47 How is multi-touch functionality implemented?
16:29 How do projected capacitative touch screens work?
17:59 Capacitative touch screen electric interface
18:35 Disadvantages of capacitative touch screens
20:05 Connecting a touch screen to Arduino
21:35 Schematic diagram of Aruino resistive touch screen interface
21:50 Reading the resistive touch X coordinate using Arduino
23:42 Displaying the X coordinate in Arduino debug mode
25:25 Using pull-ups to filter touch screen noise
26:23 Reading both touch screen coordinates with Arduino
27:15 Building a mini-piano using resistive touch screen
27:39 Arduino Piano sketch explanation
29:56 Trying out the Arduino piano!
30:41 Ron Mattino -- Thanks for watching! ;)