Questions tagged [touch-panel]
The touch-panel tag has no usage guidance.
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No touch points close to the edge of the screen
Just for fun and to learn, I'm writing code to drive a 800x480 TFT with resistive touch driven by an RA8875 and an ATmega328P and avr-libc.
It works fine so far but when reading touch events, I don't ...
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Driving 1024x600 TFT LCD using SSD1963
I trying to drive a 10-inch (1024 RGBx600) TFT LCD using SSD1963 Controller. According to the datasheet, SSD1963 has 1215 kB embedded SRAM, which can be used for driving 864 x 480 LCD with 24-bit data ...
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How to make a recent laptop touchpad work on PC with an external PS/2 USB adapter
I want to make a laptop touchpad work individually with a USB adapter, but failed, on a recent Thinkpad E14 touchpad part.
Some articles on the internet said they succeeded connecting the touchpad ...
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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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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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Need advice on tapping into touch screen connected to LCD
I'm hoping to get some advice on a technical issue I'm currently facing. I am attempting to tap into a touch screen that is connected to an LCD, but I'm feeling a bit confused about how to proceed. ...
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How is this plastic touch component called?
I found this TouchPad inside a toy mimicking a smartphone and I am curious about the technology, which seems to be embedded in a simple transfer plastic sheet like those used for projectors.
What ...
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Voltage triangulation across a copper plate for touch sensing
I'm using an Arduino Uno and am admittedly a bit out of my depth here. I'm trying to sense (very broadly) where on a copper plate a touch occurs. I'm using the voltage triangulation method found here. ...
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How do I find the pinout of this touchpad?
I have this dead Acer Aspire One 756-877B2ss laptop computer from 2012 that I have completely torn down, and I would like to repurpose its trackpad for Arduino or ...
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How can I repair a damaged flat 4 pin cable?
I have a computerized sewing machine Juki HZL-009. This picture is related to its screen, whose touch part has a 4-pin resistive touch screen glass panel.
This image is from a healthy screen without ...
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What CAD software is used to design and manufacture projected capacitive touchscreens?
I am looking to learn more about how projected capacitive (PCAP) touchscreens are designed and made, specifically with laser ablation. What kind of CAD software is used to create layered drawings for ...
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Suggestions on how to desensitize a touch button
The video intercom in my apartment has started ringing on its own at random intervals.
The outdoor panel doesn't have a physical doorbell button: the designer opted for a trendy touch sensor that ...
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How can I use a microcontroller to trigger an existing capacitive-touch pad?
(Note: I have found several other questions on a similar topic, but none of them address my specific issue.)
I have a lamp that is controlled by non-contact touch buttons. The user-facing surface is ...
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What is a subtle way to disrupt or cause interference to a typical laptop touchpad?
I know touchpads operate based on capacitance and using your finger to sort of complete a capacitor and track movements, etc. Is it possible to confuse or disrupt a touchpad using some other material(...
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