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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1answer
36 views

Reasons of delayed damage signs to AMOLED touchscreen

I had the misfortune of dropping my cellphone (couple of feet). It was working perfectly right away but throughout the day the screen started displaying a darker spot in one corner that overtime ...
0
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1answer
29 views

Wirelessly connect 5" resistive touch screen to computer

Figured out display, just need to transmit touch signals wirelessly. What I have is a 5" monitor with a USB touch overlay connected to my laptop with a USB cable. I've done quite a bit of research ...
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0answers
13 views

8 Wire Resistive Touch Interface with 4 Wire Touch Controller

I am using resistive touch controller with following pins available to interface: X+ X- Y+ Y- And LCD to which I've to interface has 8 Wire as below: Since RTP has 8 wire, Is there any standard ...
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1answer
46 views

What material can I lay over a capacitive touch screen that will still make it work?

So I am trying to build a capacitive touch screen in a table, but since the table is much larger then the touchscreen. I like to put something on top that not only make it easier to clean, but also ...
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3answers
70 views

Why does the human skin steal field lines when it's very non-conductive in dry state?

In projected capacitative touch screens, sensors measure change in electric field coupling from the drive electrode to sense/receive electrode. But don't field lines only terminate on conductive ...
3
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1answer
39 views

Glitchy Touchscreen Caused by Charger extra question

In this thread Glitchy Touchscreen Caused by Charger the answer states it is from the USB charger not being rated high enough. I am using the Moto G 1st gen and upon using a charger rated for 5v 800 ...
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3answers
214 views

Making conductive traces for capacitive touchscreens

This is a follow-up to this question I asked years ago. A short summary: I'm using a head pointer (see my linked question for a photo) with a tip made of plastic, thus non-conductive. The shaft is ...
0
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1answer
103 views

What is the minimal capacitor (capitor type/size/capacity) needed to fool a capacitive touch screen? [duplicate]

Say I want to provide a device (completely batteryless of course, and detached from any human touch) the capability to immitate a touch on a capacitive screen (Galaxy S6 here). I know I just need some ...
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116 views

What material can I lay over a capacitive touch screen to block its operation, while still allowing me to see it? [closed]

I own a Kindle Voyage and would like to be able to hold it anywhere, not just along the edges, while reading. So I'm looking for a material that's clear to read through, relatively lightweight, and ...
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0answers
62 views

Touch sense controller Dout pin loading

I am working on Touch TFT LCD project where LPC2138 is host (main) controller and TSC2046 is touch sense controller for implementing touch interface. TSC2046 is having SPI interface with conventional ...
0
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1answer
66 views

Capacitive sensing between two copper plates

Is it possible to detect touch event and its position coordinates between two copper plates spaced apart by approximately 6-7 centimeters? The space between plates have to be transparent.
0
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1answer
74 views

Difference between line scan sensor and line scan camera? [closed]

I'm looking to build a multitouch table using line sensor/camera technology. I was hoping someone had already tried such a thing and could recommend the best suited between line scan sensor or line ...
3
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2answers
112 views

Finding the touching angle on a touch-screen?

I am wondering if it is possible to detect from which direction (or at which angle) a human touches a touchscreen. Imagine something like this: Is there any technology out there (e.g. special ...
0
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1answer
102 views

Characterizing a capacitive touchscreen

Is it possible to measure a meaningful impulse response of a capacitive touchscreen such as the one you might find on a mobile device, with the goal of "calibrating" devices with different ...
3
votes
1answer
93 views

capacitive touch screen

I am currently trying to build a capacitive touch screen. My end goal is to create a giant track pad/keyboard for my computer. Since abnormally large touch screens are quite pricy I have set out to ...
0
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1answer
77 views

A small compatible gpu [closed]

I would like to know what is the best possible way to solve the following problem: I want to have a touch screen over USB this touch screen should be able to receive Graphics from the attached PC, so ...
0
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0answers
76 views

Can I repurpose a tablet touchscreen to use as an oversized touchpad for a computer?

This is what is written on the flex ribbon: A11020A1013 UniDisplay UF-1102 I could only find it for sale on the internet, no real usable information. Only ...
0
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1answer
47 views

Are capacitive display(s) capable of measuring what fraction of a finger is touched?

I'm really curious to get an answer for this question. Since I don't know the functioning of a capacitive display and Google didn't help me on this issue, I landed here. :) Are capacitive displays ...
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2answers
100 views

Placing a button on a touch screen?

First off, I know nothing about electrical engineering. So please bare with me. I'm designing a faceplate for a moto360 smart watch that has a small area that overlays the bottom edge of the screen. ...
2
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2answers
347 views

How to mix to video sources into a split screen (two inputs, one output)

I want to build a circuit for my car (It has two cameras, front and rear) that shows me the front and rear camera in the same screen (splitted), top half the video from the front camera and bottom ...
1
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2answers
53 views

How do I prevent a capacitive touch from registering?

I'm looking for a thin cloth-like material or something that I can treat materials with that will prevent a capacitive touch from occurring. Everything I've tried either is too thick, or still ...
0
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1answer
194 views

QTouch Matrix ATmega8 issues

After trying a lot on QTouch Matrix for ATmega8,It didn't work for me. So sharing the trouble here. I have taken reference from this beautiful article. Here he had provided a schematic and PCB ...
1
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1answer
153 views

What are possible reasons for this not to work

I connected a 5V relay to an Arduino. It then opened and closed the relay, which had on a terminal (doesn't matter which one?) a wire that went to an iPhone' screen (with tin foil at the tip). On the ...
0
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2answers
56 views

Phone touchscreen malfunction when connecting audio circuit to it's jack

I use this circuit to convert audio signal to infrared signal and control my DSLR camera. It works fine on my laptop jack, but when I plug it to my smartphone jack, it shows some malfunctions in ...
0
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1answer
94 views

How does this USB capacitive touch light circuit work? You can touch anywhere and it turns on, not just the electrode

Here are some pics of the circuit board. Now I'm not asking how the circuit works, I understand that. There is a capacitive touch sensor IC where the shiny electrode you see on top connects to the ...
1
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1answer
330 views

Capacitor Touch switch with QTouch

I have been working on QTouch Implementation for ATmega32 Micro controller. I have taken reference from here. I'm facing issue with grounding Problem. For debugging process I am displaying the result ...
2
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2answers
304 views

Interface with touch screen using arduino

Basically I am trying to stimulate a touch screen with an arduino board. I know this has been asked several times and Ive spent a long time looking at solutions, namely some kind of foil stuck to a ...
0
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1answer
108 views

How to activate a touchscreen device without human interaction [duplicate]

I need to be able to activate apps on my iPad without human interaction. We have tried dropping batteries onto the screen but that only works if dropped within a few inches. Is there any material in ...
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2answers
116 views

Google has no datasheet for ACX502ALM-7 LCD/resistive touchpanel

I have an ACX502ALM-7 series LCD+touchpanel combo. Google cannot find me a datasheet for it. Can any one of you? I'd like to possibly interface it (at least the touch screen part) to an Arduino Uno. ...
2
votes
1answer
183 views

How does a capacitive multi-touch screen capture multiple triggers?

On which principles does a capacitive touch screen work to enable detection of multiple triggers? I understand that there are two layers; a driving layer and a sensing layer (with x or driving and y ...
2
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2answers
177 views

Is a capacitive touch screen safe to use?

I was reading about capacitive touch screens. I understood that your hand picks some current flowing on screen. That sounds alarming. Is it safe to use a capacitive touch screen, since it picks small ...
0
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1answer
290 views

Help identifying a voltage regulator

I'm trying to build a portable screen so that I can watch movies around my apartment if I need to move away from my TV screen (think a WiiU gamepad or a tablet). I have many raw components and I think ...
1
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1answer
114 views

A (touch) screen technology to identify several input devices

This may sound vague, since I am not sure if what I am looking for even exists, but please bear with me. I am interested in a technology that would allow me to not only locate, but also identify ...
2
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0answers
105 views

What is the current development status of Transparent OLEDs?

As far as I can see there are some working prototypes, but has this technology reached the market in a stable way? Does anybody know what's the current status of the TOLED technology? Also do you ...
0
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1answer
72 views

Touch screen type [closed]

I know there are many different types of touch screen out there. In the attached picture, could someone tell me what type of touch screen that is? I am looking to buy some screens like this one for ...
5
votes
3answers
452 views

Nitrile and touch screens. What is the distance required from your finger to the screen to make it work?

I am working for a safety company and we need to certify how we can use some nitrile gloves with touch screen, I read that your finger needs to be at .5mm to the touch screen to make it work. So ...
3
votes
2answers
407 views

How large is “one pixel” for S5 AMOLED display?

Referring to Samsung Galaxy S5 OLED Pixel structure in oled-display.net, in particular this image illustrates the S5 AMOLED pixels: To my understanding, the yellow rectangle should represent "one ...
0
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2answers
114 views

Likely to use more power - phone screen or bluetooth le?

Just as a theoretical guesstimate, would a phone screen likely to be more of a battery drain than a bluetooth le connection? Of course this is going to vary on the amount of data being sent the ...
2
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3answers
688 views

4 wire resisitive touch screen not working

I am having a problem with making 4 wire resisitive touch screen work. : This is the touchscreen I am using. I also have 100 Ohm resistors in series with all the pins. If I understood correctly: Y+ ...
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4answers
5k views

How can I make a fine tipped object emit an electric field similar to that of a human finger?

I've asked this before, but knew less about the tech and didn't word the question properly. I know other people have asked similar questions and knew little, so let me be as specific as possible here: ...
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2answers
300 views

What exactly does a capacitive touch screen need to register input, and how can that signal be produced?

There are active styli out there, and they take 3A or 4A batteries and don't require any wireless connection. How do those emulate human touch? EDIT: I am specifically interested in iPad touch ...
2
votes
1answer
163 views

Is to possible to measure electric signals using a capacitive touchscreen?

Thanks to a very good explanation by Mr. Ghosh, I found that a capacitive touchscreen measures the change in capacity, induced by contact with a conductive material, along a grid. I have two ...
2
votes
2answers
522 views

What connector for this cable?

I am working on a part of a project for a university exam and it includes an interface with a touch screen. The touch screen is a classic resistive four wire, it comes with a display of course. ...
0
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1answer
569 views

Control a 3.6V motor (forward/idle/reverse) using two phototransistors facing a smartphone screen

My purpose is to build a cheap quick-and-dirty "robot" using 2 electrical screwdrivers connected to the wheels and a smartphone to control them. I want to control each motor (forward/idle/reverse) ...
0
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3answers
125 views

What is the Correct Term for a Touch Screen Type Touch Sensor

This may seem like a silly question, but while we've all heard of touch-screens, I'm looking to build/prototype a device with a touch-surface (no screen) that can register up to four distinct points ...
4
votes
1answer
190 views

Resistive touchscreen to ADC

I want to hook up a resistive touchscreen to an ADC. I'm new to electronics and experienced in developing software. My intention is to learn, I would much appreciate it if you could nudge me into the ...
1
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1answer
149 views

Manufacturing a device from off-the-shelf components [closed]

I pursue an experimental project that comprises the development of a car GPS navigation unit and software for it. We develop and test the software on a working laptop-based prototype which has a ...
1
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1answer
975 views

Connect Marsboard with Touch Panel and access GPIO pins

I am thinking about using a MarsBoard A10 and LCD Touch Panel for low volume commercial product but I have to confirm some capabilities first. Firstly, what would it entail to get the Marsboard A10 ...
2
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1answer
37 views

GLCD touchscreen interference with metal frame?

I am trying to use a 128x240 GLCD driven by t6963 and a resistive touchscreen. When touchscreen and the frame are far apart, everything goes well but when I put them together it starts sending touch ...
1
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2answers
130 views

Resistive Touchscreen Stands in Midway of the ADC in standby

In a resistive touchscreen I am trying to read x-y position. The schematics is as followed. The code works fine and when I press a point, it reads correct position well but the problem is in standby ( ...