Production of LED display-related information?

Taught you how to assemble LED display section of the article above for the level of electrical technicians, including electronic professional college graduates to read. Since the tutorial invo10.4 inch Monitorslves strong electricity, please pay attention to safety. Directory
1. LED strip screen overview
2. Shall screen applications:
2.1. Advertisement Application --- New Media, new effects, new business
2.2. System Integration - Development of 2
3. Assembly significance
3.1. Screen composition
3.1.1. Unit board
3.1.2. Power
3.1.3. Control Card
3.1.4. On 16PIN 08 Interface
3.1.5. Connection
3.2. Parts production
3.2.1. Cable (data cable) Production
3.2.2. Power cord production
3.2.3. RS232 line production
3.3. Cabling Guide
4. Software Help-LED-UPDATE
4.1. Easy to use step
4.2. LED-UPDATE Details
4.2.1. Set the screen parameters
4.2.2. Batch save the information to the screen, automatic cycle show
4.2.3. Delete information
4.2.4. Send independent information
4.2.5. The list of save and open
4.3. Software descriptions and pictures of the replacement
5. Frame Production
5.1. Scaffolds
5.2. Simple box production process
5.3. Stainless steel frame production process
5.4. Aluminum frame
6. Troubleshooting
6.1. No display
6.2. Show confusion
6.3. Can not update the screen data
7. Tools and Accessories
Taught you assembly of LED screens article
1. LED strip screen overview
LED screen, as new media, sports luminous illustrations, more easily attract the attention of large amount of information kept up to date, has a very good effect of advertising and notices. More simple than the Neon LED screen, easy to install and use the results change more, you can always update the content, is a very good indoor and outdoor made visual media. LED screens are high-tech electronic products, the price is relatively high, previously concentrated in the government and the units used. Technological advances continue to lower prices, assembly and maintenance easier. Small LED screen section, because they are inexpensive to install and simple to use, long been accepted by the public, and gradually into the size of the store, application is more popular, and gradually began to spread.
2. Shall screen applications:
2.1. Advertisement Application --- New Media, new effects, new business
LED screen as the new media section is new type of decorative materials, interior decoration can be embedded in many of them to make decorations more dynamic, constantly updated subtitles, as the new boards, promotional offers and promotional information. Greatly enhance the interior of the grade, with good visual effects. As the LED section of the screen to install and use some of the technical content, limiting the advertising industry. Master LED technology, the technology can increase the interior content, expand their business.

2.2. System Integration - Development of 2
Article LED screen, as simple control, embedded in various types of equipment for the general public. Font large, dynamic and informative, for remote viewing, time broadcast news to the public, to attract public attention. Widely applied to the queuing system, reporting station system, drinking fountains and so on. LED strip screen controller, functionality is simple and stable, can be easily embedded into the system inside, eliminating the need for developers to develop LED display of the tedious work, will focus more on system functionality and innovation. LED strip screen control card development kits, provide detailed examples of the development, system integration for you and 2 provide a good environment for development.
_ 3. Assembly significance
LED industry chain has been perfect, all the accessories can easily buy online, LED technical parameters of the increasingly unified, industry-standard shape, all parts have been modular. To lay the foundation for self-assembly of LED screens. LED strip screen, due to lower material costs, the retail price is high, when the bulk procurement of the LED screen supplier, when good control of costs and prices. The end user is not familiar with the LED screen, requires suppliers to provide installation and maintenance services, so self-assembled LED screen in the local sales, with the maximum profit.
For example: assembling a 128x16 points, single red LED indoor screen, by connecting the PC serial port update the contents of the screen
3.1. Screen composition
Shall let you know what LED screen composition, cell board, power supply, control card, connection


10.4 inch TFT LCD Monitor


Cell plate back

Unit front panel
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Switching power supply and LED strip screen control card
(Parts per sample picture) 3.1.1. Unit board
LED display unit board is one of the core components of the unit board are directly affected by the display effect. Cell plate from the LED module, driver IC and PCB board composition. LED module, in fact, lots of LED light from the point up with a resin or plastic package lattice.
Driver IC is mainly 74HC595 74HC245/244 74HC138 4953.
Common indoor unit board shall screen size are:
Parameters: D = 3.75; Pitch 4.75mm 64-point wide-x16 point high, 1 / 16 sweep indoor light. Single red / red and green color
Parameter explanation:
LED diameter: refers to the diameter of light-emitting points D = 3.75mm
Light point distance of 4.75mm ---- according to the distance between the viewer choice, indoors usually selected 4.75
Unit Board Size: 64x16 --- the most common cell plate, the most readily available, the cheapest price.
1 / 16 scan: unit board of control.
Indoor Brightness: LED light points that the brightness, the brightness for indoor fluorescent lighting during the day needs to depend on the environment.
Color: One red, the most common and cheapest prices. Generally refers to red-green color, high price.
If you want to point a 128x16 screen, just use two units cascaded together can be a plate.
_ 3.1.2. Power
General using the power switch, 220V input, 5V DC output. Be noted that the LED display screen is as sophisticated electronic equipment, so using switching power supply, can not use transformers. For a single unit red indoor 64x16 board, all dark, current of 2A.
Reasoning out, 128x16 bright color screen all the time, current is 8A. Should choose 5V10A the switching power supply.
3.1.3. Control Card
We recommend using a low-cost screen control card section, you can control the 1 / 16 sweep of 256x16 points of the two-color screen, you can assemble the most cost-competitive LED screen. The control card is an asynchronous card, that is, the card can power save information, does not need to connect PC can display the information stored in it.
For more information, please refer to the user manual of the control card. http://www.smsled.com/
When the procurement unit board, ask the parameters clearly, 100% compatible with the unit board are:
08 points from the 64-point interfaces 4.75mm wide x16 high point, 1 / 16 sweep indoor light. Single red / red and green color
08 points from the 64-point interfaces 7.62mm wide x16 high point, 1 / 16 sweep indoor light. Single red / red and green color
08 points from the 64-point interfaces 7.62mm wide x16 high point, 1 / 16 semi-outdoor sweep brightness. Single red / red and green color
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The controller interfaces with 16PIN 08 3.1.4. On 16PIN 08 Interface
As the cell plate and control the number of card manufacturers, so many cell board style interface, LED screen in the assembly, he must first determine the consistency of the interface only to facilitate assembly. Introduced here only the most commonly used LED Interface: LED Industry Code: 16PIN 08 Interface: he interface the following order:
2ABCDG1G2STBCLK161NNNENR1R2NN15 explained:
ABCD for the row selection signal,10.4 inch PC monitor STB (LT) as the latch signal, CLK (CK) as the clock signal, R1, R2, G1, G2 to display data, EN enable for the show, N for the ground (GND). Recognition unit control card interface board and the same, you can directly connected. And if not, will need to produce their own conversion line (to change the line order)
3.1.5. Connection
Divided into data lines, transmission lines, and power lines. Data cable for connecting control card and the LED board cable unit, transmission line for connecting control card and computer. Power cord is used to connect power and control card, power supply and LED module board. Connect the power unit board not less than the diameter copper wire of 1mm (mm)
3.2. Parts production
3.2.1. Cable (data cable) Production
Cable and data lines inside the computer chassis similar, but somewhat different line width. The city can buy in computer-related materials. Production of cables, need a tool that is of special pliers (picture), can greatly enhance the efficiency and yield. The materials produced cable: cable, thread scheduling, cable cap. Here we note that, if you make 16PIN (16 lines) emission lines, need to buy 16PIN the line and the corresponding row of the size of thread and cap. Production step, the thread cut with scissors flat, then put the first row of thread, (note line and head balance), and then into the central pressure of pliers, hard pressed, then wound over, installed cable cap. Cable hat is important, can effectively protect the cable, so cable is more sturdy, not provincial.
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(Pliers photo cable accessories) 3.2.2. Power cord production
Power into 220V power cord and 5V power line. 220V power cable for connecting to the mains power switch, preferably a 3-pin plug, you can buy at the hardware store. Described here focuses on 5V DC power cord, because the current 5V larger, preferably more than 1mm in diameter, copper red and black on the line (be sure to red and black). Able to do so, it is best to line the two metal pieces fitted
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(Figure) 3.2.3. RS232 line production
RS232 cable for connecting computers and control card, update the screen data. It should be used first and the DB9 cable (you can buy Computer City). Carefully observe the DB9 head, above a digital, connected to 5 brown, brown white of 3 connections. The cable clamp, mounted Fortunately DB9 head. (This is important, we must clamp, pull their own a few and see if a pull on the break). Then with a multimeter measuring about 2, if conduction. It should be pointed out, DB9 male head and female sub-head. Home computer is behind the seat, so buy a plug corresponding to the public. If you do not understand, please carefully look at your PC. Are generally not the serial port laptop, buy a USB-RS232 serial line
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(DB9 accessories picture) 3.3. Cabling Guide
First installed, please strictly follow the steps to operate, reduce error.
Step 1: Check the power supply voltage, to identify positive and negative DC link power supply, the 220V power cord connected to the switching power supply, (the connection is correct, the terminal connected to the AC or NL) and then connecting the power. Will find the power supply has a lantern light, and then with a multimeter, DC range measuring about between V + and V-voltage, to ensure the voltage is between 4.8V-5.1V, next to a knob, you can adjust what voltage Phillips screwdriver. To reduce the heat to extend the life of the screen, in the brightness of less demanding situations, you can adjust the voltage to between 4.5V-4.8. Sure voltage is not the problem, disconnect the power, continue to assemble other parts.
Step 2: first power-down. Connect the red wire to V +, V-Connect the black wire, are connected to the control card and the LED module board, black line access control cards and power supply GND. Red line connection control card and cell board +5 V VCC. Each cell board a power cord. 10.4 inch LCD Monitors Upon completion, please check connections.

Power connection diagram Step 3: Connect the control and unit board, with the good of the flat cable, to connect. Note that the direction can not be reversed. Please note that unit interface board 2 16PIN, 1 is the input, and 1 output, close to the 74HC245/244 is input, the control card connected to the input. Output to connect to the next unit of input board