Modern technologies not only constantly offer new devices. Today, with their help, you can independently improve even not very advanced models. For example, make your regular laptop touch-sensitive.
Carrying out such an “upgrade” is quite simple - using a specially developed Korean gadget DuoDigital. But before purchasing it, make sure that the diagonal of the laptop monitor does not exceed 22 inches. Since the system operates in this range, you could end up wasting about $50 (that's what this gadget costs).
The device itself consists of two systems - a special scanner and a pen. In this case, the scanner is designed to read your manipulations and “report” them to the computer. And he will already be engaged in processing these “reports”. The pen will be a means for performing your manipulations on the laptop screen. That is, in fact, it will replace a mouse, therefore, like a mouse, it is equipped with two control buttons.
Let's move on to installing DuoDigital. It’s better to start with a scanner - it needs to be attached to the top edge of the monitor, exactly in the middle. For this purpose, the device is equipped with a special holder, similar in design to the mount for web cameras.
Now we turn on the device and, using the drivers provided with DuoDigital, install the system on the laptop.
We go through all the necessary setup steps in accordance with the instructions. Due to the fact that this system is a new segment on the market, it does not yet have a Russified interface. Therefore, choose from the proposed languages the most understandable for you.
When everything is installed and configured, we connect the gadget to the laptop and pair the devices. And now your laptop can “understand” and respond to your touch.
Due to its “freshness,” the DuoDigital system is not yet widely distributed in the retail network and is produced only in its homeland. Therefore, to avoid fraudulent offers, order your gadget exclusively through well-known online stores.
SovetClub.ru
How to make a regular monitor touchscreen?
Today, touch input panels are ubiquitous. They are installed on smartphone and tablet displays, laptop touchpads, graphics tablets, payment terminals and ATMs, as well as medical and industrial equipment. Manufacturers are making touchscreen all-in-one PCs and TVs, but most PC displays are still not touch sensitive.
Read also: Microsoft Touch Mouse: very touch-sensitive, completely wireless
Many people have probably thought about how to make a regular monitor a touch screen. Indeed, in some operations (reading, working with graphics, editing texts), scrolling through a page, selecting the desired item, or selecting an area on the screen with a pen or finger is much easier, faster and more convenient than moving the cursor or turning the mouse wheel. At first glance, it seems that this idea is a fantasy, and it is difficult to implement it. But in reality, everything is a little simpler. This material will tell you how to make a touchscreen monitor yourself.
A little theory
The touch surfaces of screens are structurally a separate element that is not directly connected to the display matrix. Of course, the latest generations of smartphones and tablets use so-called OGS panels, in which the sensitive element is built between the pixels, but it is still controlled via a separate bus. In total, there are three types of touchscreens, each with its own characteristics.
Resistive
Resistive technology for constructing touch screens is the simplest and cheapest. Based on the principle of operation, such touchscreens are similar to computer keyboards. On two layers of a transparent substrate, tracks of almost transparent conductive material are applied. These two layers are located on top of each other with a gap of several micrometers. The upper one is necessarily flexible and bends when touched by a finger, closing the tracks. The further away the fault is, the longer the path the current travels and the higher the resistance. Based on its value (accurate to an ohm), the sensor controller calculates where the click occurred.
Resistive touch screens are cheap, simple, responsive to any object, but not reliable enough (a small cut can damage the touchscreen) and have limited transparency (at a certain angle, conductor tracks even become visible).
Capacitive
Capacitive touchscreen is the most common nowadays (as of 2016). It is more advanced and reliable. The number of layers was reduced to one, its thickness became smaller. A grid of transparent conductors with low resistance is applied to the surface of the touch glass or film. The human body is a poor conductor of electricity and is capable of accumulating electrical charge, therefore, when a finger touches the glass, a small current leak occurs, the location of which is determined by the controller.
Wave
In a wave touch screen, acoustic (ultrasound, surfactant technology) or light (infrared, ultraviolet, PSV technology) waves are used to register touches. A frame is installed around the perimeter of the screen, combining the emitter and recorder. When a finger touches a surface, it absorbs and partially reflects the wave, and sensors register the location.
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SAV and PSV screens are reliable, absolutely transparent (no mesh of electrodes), have an inexhaustible theoretical resource (in reality depends on the quality of the components), if there is a protective frame, the sensor itself cannot be damaged, and the use of armored glass makes the screen matrix invulnerable. Therefore, they are often used in ATMs, payment terminals, industrial machines and medical equipment. But their accuracy in determining finger coordinates is mediocre. Also, wave touchscreens require regular wiping (dirt on the glass causes phantom reactions).
There are other types of display sensors, but they are much less common. In addition, these methods are difficult to implement at home, so they are not discussed.
Application of sensors in practice
All three technologies are in demand when applied to touch monitors. The resistive type was widely used in the past, but is still found today. This is what is interesting in terms of how to make a regular monitor touchscreen, but more on that below. Capacitive sensors are used in almost all modern displays that were originally touch-sensitive. Wave touchscreens, as mentioned above, are used in banking, industrial, medical and other specific equipment. Thanks to the enterprising Chinese, they are also interesting when converting a regular monitor into a touch screen.
How to make a monitor touchscreen
It’s worth noting right away that converting a regular monitor into a capacitive touchscreen is out of the question: such touchscreens are relatively expensive, specific, and almost never found separately. But resistive and wave technologies are much more interesting in this regard. It is also worth mentioning the purely light (not PSV, but infrared) version.
Method 1: Light
The first method is the simplest and most accessible, but it requires certain skills and desire to work. Before making a touchscreen monitor, you need to stock up on a webcam, an infrared diode (like in a TV remote control), a piece of photographic film (undeveloped), a battery and a housing for a homemade stylus (for example, a laser pointer will do), as well as the Community Core Vision program . What to do with all this goodness - in more detail and point by point below.
Before making a regular monitor touchscreen using this method, you need to make sure that the level of technical skills is sufficient and the situation does not interfere with the implementation of the idea. After all, the webcam needs to be positioned precisely, and for this you need space on the table, which not everyone has. In addition, a slight shift of it or the screen forces you to set everything up again.
The method is cheap: the only equipment you will have to buy is the cheapest camera for 500 rubles (most already have one), an IR diode (you can pull it out of a broken remote control), a laser pointer (you can take a marker or other thin tube instead), batteries ( “mini fingers” or “tablets”). The most difficult thing is with photographic film: most people last held film point-and-shoot cameras in their hands more than 10 years ago. In addition, the disadvantages of this method are the difficulty of setting up, the instability of the structure, and not the highest level of convenience.
Some Chinese manufacturers offer ready-made solutions of this type, allowing you to make the monitor touch-sensitive. Such products consist of a special wide-angle webcam mounted on the display and a stylus. This option is not without the mentioned disadvantages, but it looks attractive and does not require skills in working with homemade products. 
Method 2: Wave
There are ready-made touch panels on sale that operate on the principle of surface light (SLW) and surface acoustic (SAW) waves. They are a glass with a frame to which a special controller with a USB or COM interface (RS-232) is connected. Such solutions are intended, first of all, for creating terminals and special equipment, but no one prohibits using them at home. 
The process of redesigning the display with them is extremely simple.
- Before making the monitor touchscreen, you need to wipe it with microfiber and a special cleaner or universal glass cleaner. It is important to remember: if the screen has an anti-reflective coating, you cannot use products containing ammonia (ammonia) for this, as they wash off this layer!
- After this, a touch glass is placed on the screen, which is secured with the included devices or placed on high-quality double-sided tape (but it’s better to screw it on anyway).
- The further setup procedure consists of installing a proprietary driver and other software (supplied on a disk with the sensor or downloaded from the manufacturer’s website) and calibrating the touchscreen.
The main disadvantage of such a conversion of a monitor into a touchscreen is its relative high cost. A new sensor costs from several thousand to tens of thousands of rubles, depending on the diagonal. In addition, finding the right size for modern wide-format large-diagonal matrices is often difficult. This is due to the fact that narrow-format (4:5 or 3:4) screens have a better ratio of diagonal to usable area, so such touchscreens are produced for them more often. In addition, glass with a frame can spoil the aesthetic appearance of the monitor, not fitting into its exterior.
Method 3: Resistive
In terms of price, efficiency and ease of use, a resistive touchscreen is most preferable. Chinese manufacturers create special touch films of varying levels of accuracy, durability and functionality, with different sizes. 
Some of them can be trimmed to fit the display, while others do not support such modification. Therefore, before you buy such a touchscreen, you need to study its description and characteristics.
blog.aport.ru
How to make a laptop screen touchscreen | News | "Technocontrol"
Modern gadgets that appear on the market can seriously “upgrade” your device. For example, touch screens on laptops are no longer uncommon, but if you purchased a compact computer a couple of years ago, then most likely you do not have this function. If you need it, you shouldn’t sell your old laptop and buy a new one, especially since their prices are now very expensive. One small gadget that was introduced a few days ago can help you solve this problem. The device is called AirBar and was developed by a little-known company called Neonode. So, this accessory allows almost any computer screen to gain touch capabilities. The operating principle is as follows. AirBar is a magnetic bar that needs to be attached to the bottom under the screen. By the way, this is of course much more convenient to do on a laptop. Then the gadget needs to be connected to a laptop or computer via a USB cable. Once connected, AirBar begins to generate light rays invisible to the eye onto the display, with the help of which gestures and movements are tracked.
The gadget, remarkably, does not take up much space and, moreover, according to the developers, can work without drivers under Windows and Chrome OS. The gadget also works on OS X, but currently has reduced functionality. AirBar can detect movements not only of a finger, but also of other objects, such as a pencil. They plan to sell such an interesting gadget at a price of $50 for 15.6-inch screens. The new product will be officially presented at the CES exhibition, which will be held in January.
Best regards, Dmitry Amelin
Expert Technocontrol
technocontrol.info
Making a tablet from a laptop
Making a tablet out of a laptop has been my long-time desire. Inspired by the materials I dug up online, I got to work. Let’s find out what came out of this idea under the cut. If you want, we can make one for ourselves. I immediately apologize for the low quality of some photos - I forgot to take them during work, I had to be content with what I had. At that time, it was absolutely impossible to bring my idea to life - laptops cost a lot of money, and no one would let me take them apart. Now it’s easier with this, I’ve been fiddling with iron to one degree or another for many years and somehow a very decent amount has accumulated around it, there’s plenty to choose from. In general, I perfectly understood that this would be a device for home use, because such a brick box in a bag is not very easy to carry around with you. In principle, this was not required, because An additional incentive to create this tablet was my mother's need for a large touch screen for her drawing preparation work.
About touch screens (Touch screens)
At the moment, there are mainly three types of touch screens available to the average user: resistive, infrared and capacitive. You can search on foreign sites using the queries “USB touchscreen kit”. However, such screens can also be purchased from our offices that supply spare parts for terminals. For those interested in technical details, click here.- Resistive screens consist of two conductive layers, insulated from each other by microscopic dielectric balls. When you press on the screen, the top layer is pressed through and is point-locked to the bottom layer. Based on the resulting electrical resistance, the controller calculates the coordinates of the press. This type of screen is the cheapest and is available as an inexpensive option for experimentation. The downside is that a relatively strong pressure is required for the click to be registered. It is quite possible to work with your finger, but to increase the accuracy of the hit, it is still better to use some kind of stylus.
- Infrared screens are a frame with infrared LEDs fixed in it on one side and phototransistors on the opposite side. When an object touches the screen, it blocks the LED beam for the corresponding phototransistor and the controller calculates the coordinates of the click. This allows the screen to be completely indifferent to what is being pressed - a stylus, a hand, a pencil, anything, as long as it is thick enough to block the LED beam. The advantages are high transparency and durability. The disadvantages are sensitivity to dirt, and slightly worse accuracy in determining coordinates. The cost is average.
- Capacitive screens are based on measuring the amount of current leakage when touched by a finger or other conductive object. The downside is the need to use conductive objects to work with such a screen. They are very convenient to work with, but the cost of such screens is high, and, in my opinion, they are not very suitable for our low-budget experiments.
Choosing a victim
In fact, the model of the original laptop does not really matter, except for a couple of points. Firstly, the aspect ratio and dimensions of the screen must correspond to the touch glass models available in your city, which were described above. Secondly, it’s better to take something other than the same old stuff that I took for the experiment - then you can also work on what you get. Initially, the donor was supposed to be a Samsung laptop found at work. After I took it apart to estimate its appearance, it turned out that it couldn’t see the USB point-blank – the south bridge had died. Well, this is my own fault - it would be nice to check this before disassembling. The photographs were not preserved in their original form, so here is a photo in the form of a sandwich:
The first donor for the future tablet After this sad discovery, a battered old Acer Aspire 3610 laptop, bought for pennies somewhere in the dark catacombs of the Mitinsky radio market, was taken as the basis. Like all models in this series, by that time it had “wonderful” broken hinges of the top cover, filled with a thick layer of epoxy resin by the previous owner and broken again.
View of the laptop before work began
Changing the filling
Some configurations of this model are equipped with a Wi-Fi module, but in my case it was not there, and with a clear conscience I twisted the adapter from the above-described Samsung along with the antennas. The antennas were placed on the right side inside the case, and the wires to them were routed directly along the laptop board and glued with double-sided tape in several places so as not to interfere with assembly.
Installed Wi-Fi adapter I had a Bluetooth adapter in my package, but it was immediately mercilessly thrown away as it was completely unnecessary. In this model, it is possible to increase the processor clock frequency by inserting a jumper into its socket, but I decided not to tempt fate and not conduct such experiments. I didn’t want to buy a third laptop for this purpose. The DVD drive along with the PCMCIA slot housing was removed as unnecessary and in order to lighten the weight of the structure.
Modifying the motherboard
Initially, I wanted to move the buttons and indicators to the end of the tablet, and even made a board and adapter for all this stuff, but in the process of working on the walls of the case, I realized that this would unnecessarily complicate the assembly process, and decided not to stretch the already lengthy experiment. It was decided to throw away the Bluetooth adapter and use its power button to control the tablet's power. In fact, the changes are not at all difficult, and for this model this can be done by a person with at least some soldering skills. At the bottom of the board there are Bluetooth and WiFi control buttons. We select the button labeled “blue2” or similar, and mercilessly cut this path. It is quite simple to determine: the button has four legs, three of them are connected to the “ground”, i.e. with a large solid area on the board, and one with this very track.
Disabling the Bluetooth button Next, you need to connect the standard power button with our new button. Determining the required contact is also easy: two of the four contacts are connected to ground, and the two opposite ones are connected to another track. We take any thin wire and solder its ends to the found contacts on both buttons.
Standard power button
New power button We solder the touch screen controller cable to any unnecessary USB port. They will have to sacrifice and seal it on the outside with epoxy. You can unsolder one of the connectors, or you can simply solder to its contacts. I warn you right away: it is not recommended to desolder the connector without experience in such an action - it is quite difficult and there is a chance of damaging nearby elements of the motherboard. It is much easier to solder to the contacts. By the way, you can solder not the controller cable, but a small USB hub and plug the controller into it. We'll get several additional ports inside the laptop.
Body work
This is, without a doubt, the most tedious and dirty part of the job. All that was left of the entire case was the back cover, the inner frame of the display and a piece of the upper inner cover (the one in which the keyboard is attached).
We leave only a small piece of the lid. The walls were drawn out manually using epoxy plasticine. Like this:
Epoxy plasticine
Working with it is very simple: cut off a piece and knead it thoroughly with gloved fingers moistened with water. It is important to mix it thoroughly until the color is uniform. Plasticine heats up quickly and remains very plastic for some time. I recommend not cutting off a piece more than 2 cm long, since this amount may be too much for one wall, and hastily molding it somewhere so as not to spoil is not a good idea. It’s better not to rush - the quality will be better.
The general technology for forming walls is as follows: we take a fairly long plate (for example, a ruler), cover it with wide tape so that the plasticine does not stick to it, and form a flat wall in the desired location of the body. Once the plasticine has hardened, the ruler is easily separated from the epoxy and leaves an excellent, smooth surface.
Body wall made of epoxy plasticine, view of the internal rough side. Please note: in order to get an even line between the top and bottom covers, I traced the side walls on the already assembled tablet, and then sawed it lengthwise with a thin circular saw on a drill. The result was a thin, neat gap, like on factory plastic. To attach the lid, I used a trick - I made new mounting legs to fit my holes. The technology is as follows - we take a sheet of paper, fold it on a pencil, cut it to the desired length, fill it with liquid two-component epoxy, and press it to the desired place. This results in a column like this:
Blank for the display mounting leg After curing, drill the top of the post and glue (with the same liquid epoxy) into it the nut that was broken out of the lid or housing fastening. Actually, all the screws are wrapped in such nuts; they can be picked out a lot from the original case.
Display mounting leg with embedded nut The display is attached to the frame using the same technology, only the nuts are glued directly onto the display frame. The display module is now a frame-touchscreen-display stack. Those. We simply place the touchscreen close to the display and tighten it to the frame with screws using the standard fasteners.
Attaching the display to the frame Wi-Fi antennas are laid out as free space allows. I didn't bother too much with the placement of the antennas, but the signal quality did not deteriorate. It’s the same with the touchscreen control unit – it doesn’t care where it’s located.
Mounting a Wi-Fi antenna and a view of a wall made of epoxy plasticine The cable and inverter can be routed like this, you don’t have to solder them and nothing gets in the way anywhere:
New cable and inverter gasket
Touch Screen Controller
Let's shine
Sanding all this stuff was a hassle and brought a lot of acrylic dust into my room, but it was worth it. I used regular acrylic putty (even on wood, in my opinion) in white and simple matte black paint from a spray can. The work is not very difficult, but it requires accuracy and some patience. I had so much fun the first time and everything went well. I don’t have any photographs of the process, since there was no way to take pictures with dirty hands, and somehow I didn’t think of asking someone in the heat of the battle with putty.We strive for excellence
The scope for imagination is limited only by your perseverance and budget. Of course, it was possible to find a faster processor, since the socket allows it, and insert a small SSD drive to speed up the system, but the tablet turned out to be quite pleasant anyway. A capacitive touchscreen would have made working with the tablet even more enjoyable, but its price put me off right away.operating system
I immediately chose Windows XP Tablet Edition as the operating system, so as not to think about specific tablet features and not experience performance problems. You can install Windows 7 on this platform, but it will be very, very slow. By the way, I successfully installed xUbuntu and even Android from the Android x86 project on it! Tablet drivers for Linux and Windows (and even MacOS, it seems) are included on the disc included with the touchscreen.results
A little TV
They even made a report about my tablet on the Podmoskovye channel. Of course, there are plenty of blunders like “threw away the motherboard,” but this is not a technical program, but an entertaining one, so I think the editors can forgive them (the blunders). Tags:- laptop
- tablet
- homemade
geektimes.ru
Does a laptop need a touch screen?
In the childhood of many Western (and Russian) millennials, one of the favorite animated series was “Inspector Gadget” - a story about a bumbling police officer equipped with a huge number of technical devices. The cartoon featured, among other things, a “computer book.”
Fifteen years have passed and look how gadgets have evolved. We not only have “computer books”, they are also tablets, but also self-driving cars and smart watches! We develop technologies that allow you to use your time more efficiently. But how often do we look back to understand how useful a particular gadget is? Does it solve any current problem? Was the new development a necessity, or an exciting but useless invention?
It's worth asking: does a laptop really need a touch screen? How did customers rate this innovation and how did it impact the user experience? Is this overkill or a change for the better?
Study
To answer these questions and learn how people typically use a laptop's touchscreen, the User Testing team gathered a group of people who had recently purchased Windows 8 laptops with touchscreens and conducted a usability study.
Participants in the experiment were asked to use the Windows Start screen and make small changes to their display settings using the Control Panel. Marketers also asked subjects to go to an online shoe store and find a pair of black men's shoes, size 42.
Participants were encouraged to start shopping using the touch screen, but were allowed to use a keyboard and mouse if necessary. For the purity of the experiment, the interaction of people with the sensor was recorded on video.
- Mobile usability: opportunities and limitations
Advantages of a touch screen
1. Windows 8 design
The new tiled design of Windows 8 combined with a touchscreen was well received by study participants. Many of them preferred to use the screen rather than the mouse to scroll the page.
Participants noted that the ease of scrolling is mainly ensured by the size of the tiles. While many people liked the design of the Windows 8 Start window, one participant suggested that on non-touchscreen laptops the design would be less intuitive and the horizontal scroll bar wouldn't be very useful.
2. Internet
Participants also highly appreciated online shopping with a touch screen. They liked the ability to scroll through search results to find the product they were looking for. Scrolling turned out to be easier and clearer than using the vertical scroll bar.
- Keyboard navigation as website usability optimization
Disadvantages of touch screen
1. Keyboard
When you touch a text field on the screen, the touch keyboard appears. The study participants liked it the least: it is awkward to use because the screen is tilted, and it seems unnecessary because the laptop has a keyboard.
In addition, the touch keyboard, taking up a lot of space on the screen, obscures the content. One study participant noted that if he could turn it off permanently, he would like the touch screen much more.
Small links and buttons were a problem for most study participants. For example, it was not easy to select the “shoes” category by tapping on the screen. Many times people accidentally fall into other categories and have to start all over again.
Participants made quite a few errors in this task while using the touch screen and admitted that in such cases they usually resorted to using a computer mouse due to the size of the links and buttons.
Participants also noticed that the touch screen lacks some mouse functions. It allows, for example, to examine shoes in detail by hovering the cursor over the image. Participants tried to complete this task and enlarge the picture by stretching it with two fingers, but it was not the same.
- How to make clickable landing elements intuitive?
So, the touch screen functionality was of little use to the study participants. While scrolling through search results allows you to quickly select the products you want while shopping, that's where the benefit ends. The touch screen is more suitable for websites and applications designed for mobile phones than for regular computer programs.
Study participants found that the touchscreen and mouse combination allowed them to complete all tasks, but that switching between them was cumbersome.
High conversions to you!
Based on materials from usertesting.com, image source: O V E R U N D E R
Unlike desktop computers, functions and programs in tablets are controlled by lightly pressing the fingertip on the screen at the desired point. The tablet reacts to touch thanks to a thin transparent glass plate superimposed on the display screen. When you press on the glass (touchscreen), depending on the type of sensors, the resistance, inductance or capacitance of the mesh applied to the glass changes and thus the tablet receives instructions for a specific action.
The touch glass is very thin, but strong enough to break with your finger. But if the tablet is dropped on a hard surface or hit with a sharp object, the touch screen cracks, which is what happened with the glass of the children's MonsterPad tablet shown in the photo.
Checking the tablet's functionality using the mouse
The image on the screen was uniform without defects or distortions. The tablet remained operational, since when you pressed the Power button, a window popped up with a menu to turn off the tablet, but it became impossible to control its operation by touching the screen with your finger.
To fully check the functionality of the tablet, and the ability to turn it off before repair, it was necessary to connect a mouse to the Micro USB connector located on the side of the tablet. Mice usually have a USB connector. Therefore, I had to buy a USB-Micro-USB adapter.
When a mouse was connected, the tablet system automatically detected it, and an arrow-shaped mouse cursor appeared on the screen. Diagnostics showed that the tablet’s electronics are in good condition. Therefore, to repair the tablet, it is enough to replace the touchscreen with your own hands. After diagnostics, the tablet was turned off using the mouse.
While waiting to purchase a touchscreen, it is necessary to keep the tablet's battery charged, since deep discharge sharply reduces the tablet's battery life.
Where can I buy a touchscreen for a tablet?
The search for a store to purchase a touchscreen for a children's tablet MonsterPad at a minimal cost led to the website of the time-tested Chinese online store AliExpress. The site presented a large assortment of sellers of touchscreens for the MonsterPad tablet.
A seller with a large number of positive reviews and a high rating with an average price and free shipping was selected. When choosing a touchscreen, pay attention to the presence of double-sided tape on it. If the screen is without adhesive tape, then replacing it will be complicated by the need to purchase such adhesive tape, cut it and secure it.
If you can’t find a touchscreen by the name of the tablet, you can try searching by its markings, which are usually applied to the flat cable running from the touchscreen.
The touchscreens of many tablet models are interchangeable. The main thing when choosing is to pay attention to the type of sensor and its diagonal size, expressed in inches. For example, the MonsterPad requires a 7" touchscreen.
The resulting parcel was a large, compared to the size of the touchscreen, polystyrene box completely wrapped in adhesive film. It is convenient to open such packaging by cutting the film with a knife along the line of connection of the box halves.
The touchscreen was removed from the packaging and carefully inspected for defects. Everything was in perfect condition. Trying on the glass on the tablet confirmed the size matches. To check its functionality, all that remains is to disassemble the tablet and connect the touchscreen to the motherboard.
How to disassemble the MonsterPad children's tablet
Before starting to repair the tablet, to avoid scratches on its case and display and dust getting between the display and touch glass, you need to wipe the table with a damp cloth and cover its surface with a soft, lint-free cloth. The only tools you need are a knife and a couple of small screwdrivers with a Phillips and a flat blade. After preparing the workplace, you can begin repairs.
The MonsterPad children's tablet can be disassembled easily thanks to the screw fastening of the back cover. Using a sharp tool, remove the four plug legs glued with adhesive and unscrew the four screws using a Phillips screwdriver.
Then, even without the help of a plastic card, grab the case halves with your fingernails in the area where the tablet's power button and connectors are installed, and carefully move the halves apart. The power and volume buttons must be immediately removed and set aside so that they do not get lost or scratch the tablet screen if they fall under it.
The tablet has been disassembled sufficiently to begin replacing the touch glass. All that remains is to remove the cable coming from the touchscreen from the connector. In the photo the connector is in the far right corner.
If the tablet was disassembled to replace the battery, then its type is clearly visible in the photo. To replace the battery, you first need to unsolder the red and black wires coming from it from the motherboard and carefully remove it, overcoming the adhesion force of the double-sided tape.
To release the touchscreen cable, you need to use a screwdriver blade to move the clamps a couple of millimeters in the direction indicated by the red arrows in the photo. After this, the cable can be removed from the connector without force.
How to check the touchscreen before installing it in a tablet
After removing the back cover from the tablet, it became possible to test the new touchscreen for functionality. To do this, without removing the protective film, you need to place a new touch screen on the broken one, carefully turn the tablet over, and observing the numbering of the cable, insert it into the connector on the motherboard and return the latches to their place. Then turn the tablet over with the display facing up and turn it on using the power button.
After downloading the software, you need to tap on any icon or just work a little on the tablet. If there is a reaction on the display when touching and scrolling through pages, then everything is in order and you can start replacing the broken glass. Before starting the repair, you must turn off the tablet with the power button and disconnect the cable of the new touchscreen from the connector.
How to remove a cracked touchscreen
To remove a cracked touchscreen, use the end of a knife to pry it at any of the corners and try to lift it up.
In the MonsterPad tablet, the glass was glued weakly; there was no need to even heat the glued area with a hairdryer. The force of the fingers was enough to peel it off. The main thing is not to rush and perform this operation very slowly and smoothly.
Preparing the tablet frame and installing the touchscreen
After removing the cracked touchscreen, use a rag soaked in alcohol to degrease and remove any remaining adhesive from the frame.
Fortunately, the cracked glass did not crumble into pieces and there was no need to use a vacuum cleaner or hair dryer to blow off the small fragments. For the same reason, it is not recommended to scrape off glue residue with a tool.
To ensure that the cable did not interfere with the positioning of the touchscreen when gluing, a piece of polyvinyl chloride tube was inserted next to its release hole, as in the photo.
In the next step, the protective film was removed from the touchscreen from the applied adhesive layer to the edges.
All that remains is to tuck the cable into the hole in the tablet frame, rest the corner of the touchscreen near the cable into the notch of the frame and slowly attach it to the frame, controlling the accuracy of the placement in the opposite corner diagonally.
The touchscreen fit into the recess of the frame exactly, without gaps or displacement on the first try. There is no need to press the glass tightly at this stage of repair. It is advisable to do this after fully assembling and checking the operation of the tablet.
The cable is long enough, which is convenient for installation. However, to prevent the cable from breaking if it gets caught between the covers when they are closed, it must be folded in half and pressed a little, avoiding sharp bends.
All that remains is to install the pushers of the buttons for turning on the tablet and adjusting the sound volume and snap the back cover to the base of the tablet. Screw in the four self-tapping screws and install the removed plugs on them.
The independent repair of the tablet was successfully completed, it began to work and look like new, and the child can play his favorite games again. Now, I believe, he will be more careful with his tablet and other gadgets. I did not remove the protective outer film from the touch screen; let the owner of the tablet remove it and be the first to tap (touch) the surface of the screen.
I hope that the step-by-step instructions provided will help any home craftsman, even those who do not have experience in repairing such devices, cope with the repair of a tablet or smartphone.
The cost of replacing the tablet's touch glass with your own hands was less than 10% of the original cost of the tablet.
Do-it-yourself touch screen sounds a little strange. But why is that? Nowadays, computer devices with touch screens are increasingly being produced. And the future, of course, lies with this technology.
But is it affordable for everyone? Plus or minus, who has what capabilities.
Optical touch screen- this is what it is proposed to do at home. And for this we need 6 things:
— Thick white sheet of paper (1 piece);
— Scissors (also 1 piece);
— Webcam of any cost;
— Photo frame with glass;
- Pencil;
- Cardboard box.
Instructions for creating a touch screen
A sheet is inserted into the photo frame. A hole is made at the bottom of the box for the webcam. In principle, you can do without a pencil here, but you definitely need scissors to pierce the box. Now we need to place the glass frame in the box so that the webcam “looks” at the glass, and we look at the paper.
But here we cannot do without software. Community Core Vision and a virtual mouse driver are required. Fortunately, the license allows you to download and install the whole thing for free.
This interesting video review will help you with details and explanations:
It is certainly interesting to look at all these things. But to do it yourself is much more difficult and doubly interesting. Therefore, I want those who will do this miracle to share their impressions. How it is and what.
In recent years, more and more devices are equipped with touch screens. However, in order to enjoy the convenience of touch controls, it is not at all necessary to buy a “new model” of this or that device, because even a traditional display can easily be turned into a touch screen. So, in this article we will talk about how to make a touch screen at home without much effort.
Laptop and PC display
At the first stage, you will have to purchase a special Duo Digital gadget, developed by Korean engineers. With its help, you can turn any regular display, up to 22 inches diagonal, into a touch screen. The presented device is a special scanner that is installed at the top of the monitor. It monitors the user's manipulations and sends data about them to the computer for processing. The second part of the Duo Digital system is a pen that replaces the mouse. It, like the manipulator we are all familiar with, has two control buttons.
Continuing the conversation about how to make a laptop screen touchscreen, it should be said that the Duo Digital system is inexpensive - about 40-50 dollars for one set. Therefore, this approach to upgrading an old laptop is completely economically justified. By the way, the price of the device does not depend on the diagonal of a particular display. The main thing is that your device, as already mentioned, does not have a matrix larger than 22 inches.
Once you have purchased your Duo Digital system, secure the scanner to the top edge of your monitor. For this purpose, it has a special mount, similar to a webcam holder. It is advisable to install the scanner exactly in the middle of the screen width. Next, turn on Duo Digital and install special software on your computer. All the necessary drivers are included with Duo Digital, so there should be no problems finding the software. At the next stage, we make individual settings and that’s it - your laptop or monitor has turned from a regular one into a touchscreen one!
Phone display
As for how to make a touch screen on your phone, there are somewhat more difficulties here. And the main one is the price. There are also devices like Duo Digital for mobile phones and smartphones. However, they are unreasonably expensive. So, for example, at the end of 2007, the famous Finnish manufacturer of communications equipment, Nokia, released a special Bluetooth pen. With this device, you could write messages, phone numbers, notes, and other information on a standard Bluetooth phone without using a traditional keyboard. In 2008, this pen appeared on the Russian and Ukrainian markets. However, with a price of 240-280 dollars, this gadget did not gain much popularity. Indeed, for that kind of money these days you can buy two full-fledged touchscreen phones at once and not spoil yourself with similar accessories from Nokia.
Now you know how to upgrade your device and how much it costs to make a touch screen for a regular monitor, phone or laptop.
- Added: text
- 19.10.2015. 10:39
- Views: 5499
Recently it has become very popular to have touch panels at home, which are quite expensive in stores! This article will tell you in detail how to create a real Touch Screen monitor from a very ordinary monitor!!!
The most necessary material for creating a touch panel is, for example, a 15″ monitor!
Direct work process
First stage.
First you need to take everything apart and see what is inside. To do this, you will need to unscrew the bolts. In this particular example there are only two. Depending on the type of monitor, the number of bolts may vary (less or more), but all of them will need to be unscrewed.
Second phase.
After the bolts are unscrewed, very often the front panel of the monitor still does not want to come off! In this case, you will need to unlatch the latches. This can be done, for example, using a screwdriver.
All. The cover is completely removed and the latches are visible.
There is a bare screen in front of us!
Third stage.
The next stage of work will be to remove the screen from the case.
After the screen is removed, you will need to inspect it and find empty spaces.
Fourth stage.
The next stage of work will be installing the touchscreen. In this particular example, a touchscreen was installed, which consists, in fact, of a Touchscreen (that is, glass with a film glued to it), as well as a USB controller, which was also installed inside.
This photo shows the controller itself:
It is quite small in size. It is just over 10 centimeters in length and about 4-5 millimeters in height.
This controller is not capable of heating up. But just in case, you can wrap it with electrical tape.
Fifth stage.
You will need to glue double-sided tape to the back of the controller. Thanks to this tape, the controller will be attached to the case. This mount will be sufficient, since no force will be created on the Touch-screen controller. That is why there is no need to create anything unnecessary.
Sixth stage.
Then you will need to directly glue the controller to the case. It is recommended to glue it so that it does not stick out from behind the metal cover, but is level with it, since you will still need to put the screen back.
Seventh stage.
Then, you will need to remove the unnecessary “ventilation grille ribs” of the monitor at the bottom so that the USB cable of the controller can be routed out. This can be done, for example, with an ordinary soldering iron and scalpel.
Eighth stage.
After this, you will need to run the cable. Since the kit includes a cable with filters (barrels), then you will need to cut off a few more plastic stiffeners.
Ninth stage.
To ensure that all this does not dangle during the installation process, and also to ensure that the cable is not accidentally pulled out of the connector when using the future touch panel, it is recommended to secure the cable with plastic stitches.
Tenth stage.
The next stage of work will be the process of installing the glass itself with the Touchscreen. First you need to very carefully wash the monitor screen that will display the image. If you don’t do this, then it will be difficult to get to him! And spots inside will only spoil the picture!
Eleventh stage.
Then you will need to stick double-sided tape (for example, thin car tape!) onto the steel frame of the monitor screen.
Twelfth stage.
After this, you will need to glue the glass with Touchsreen onto this tape. It is recommended not to glue the glass over the entire surface, since if you need to disassemble the structure again, it will be very, very problematic to separate the glass from the automotive tape. At the same time, there will be a frame on top of the glass, so it will not fall out.
Thirteenth stage.
Now all that remains is to connect the Touchsreen and the USB controller. To make the connection, it is best to use a cable with a connector. The cable is thin and therefore can be “wrapped” around the screen and the base of the screen. To prevent it from dangling, it would be better to glue it.
Fourteenth stage.
The next stage of work will be putting on the fastening strip.
In this particular example, in the place where the Touchsreen cable runs there is a mounting recess. Thanks to this, you don’t have to worry about the cable being pressed by something or something happening to it!
Fifteenth stage.
You need to turn on the screen and take the first test drive.
Sixteenth stage.
The next step is to put the front panel of the monitor back into place. But in this particular example, it turned out that this panel began to put pressure on the touchscreen and began to interfere with calibration!
That's why I had to create the following:
That is, you will need to create small protrusions so that the Touchsreen does not come into contact with the front panel.
That's it, the touchpad is completely ready.
Good luck!
