Questions tagged [touchscreen]
A display that incorporates a human interface device which records positional information of points of contact between the user and the display
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How can I make an effective head-mounted pointing device for a touchscreen
I have read How can a capacitive touch screen be triggered without human contact? and feel a bit closer to understanding the technology, but I am still a bit puzzled.
I recently picked up the task of ...
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How can I mimic a touch to my phone's screen
Hi I want to build a circuit that can mimic a finger touching a screen. I need to be able to have my device sit on my phone screen and send touch events through the touch screen (which I assume is ...
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Touch Screen Panel of Car Radio Set-up
The Touch Screen of Car Radio Setup was damaged and removed. HD 6.95 INCHES WIDE SCREEN TFT (HG-070) A capacitance touch screen was replaced with the IC GT911 6Pin. Its working good except the Icon on ...
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Can a capacitive touchscreen have configurable sensitivity?
I'm using a NHD-5.0-800480FT-CSXP-CTP display with capacitive touchscreen built-in. Here the datasheet.
I need to place the display behind a thin sheet of glass/plexiglass and I was looking for a way ...
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Adding backlight control for Raspberry Pi Zero 3.5 inch tft touch display (GPIO)
Can somebody please help me how i can modify TFT35 display for backlight control with PWM (Raspberry Pi Zero 2 - GPIO 18). I found one solution on GitHub (https://github.com/wild-mustango/VenusOsTFT35)...
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Why does the air gap between the electrode and the overlay of a capacitive sensor have a negative impact on the touch performance?
I see in the design guidelines that the airgaps between the electrodes and the overlay of the capacitive sensor have detrimental effect on the performance of the touch sensor and they should be filled ...
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Measure capacitance on a mutual capacitive touch sensor
I interpret the mechanism of a mutual capacitive touch sensor like this:
There are 2 electrodes X and Y. To measure the difference in capacity, the X electrode is driven high (i.e 3.3 V) and the Y ...
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I2C to USB converter with interrupt
I have a touch screen with I2C and interrupt output and I would like to connect this touch screen over a USB cable to a host controller.
I know that it is possible to transfer interrupts on the USB ...
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Looking for a large capacitive touch array controller
I'm building a capacitive touch panel.
It has an odd shape, so I resulted to building my own with the capacitive diamond array solution.
It doesn't have a screen underneath, so it's all contained on a ...
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Have I configured the correct current supply for my TFT LCD Backlight?
I am currently working on a custom PCB which integrates a 3.5" TFT LCD. I am planning on driving the TFT backlight using a MIC4801 LED Driver and want to make sure I have configured the correct ...
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MIPI DSI touch screen compatibility with Orange Pi 5B
TD;DR
Is DSI and MIPI D-PHY TX 4 lane the same thing?
I came across a "Waveshare 7.9 touch display for Raspberry Pi" which has two options, HDMI and DSI.
As I can see from Orange Pi's ...
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technical term for this phenomenon: minor adjustments to a notebook's LED-LCD screen angle result in major legibility issues
Perhaps a bit of background will help you to understand the question I'm trying to formulate. I have no engineering background but would like to read more about this LED-LCD phenomenon though I don't ...
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Can I run my 3.5" TFT backlight off of a 3.3V supply?
I just wanted to confirm my thoughts on the selection of resistor value for a 3.5" TFT screen I am working with.
The datasheet gives a forward voltage of 3.2 V and a forward current of 120 mA.
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Need help understanding how capacitive touch sensor works
I watched this tutorial here (Explanation is from the time stamp 01:58 onwards): https://www.youtube.com/watch?v=3KQd9F0P6PI&t=283s
and I'm having trouble understanding the concept. I get the ...
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Capacitive touch: Multi-touch (Simultaneous Read) Self-capacitance Buttons with Single Capacitive Touch Interface IC
With capacitive touch, if I want multiple independent buttons rather than a screen, will multi-touch (ability to register more than one button simultaneously) still be prevented with self-capacitance ...
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