Have you ever been curious when shopping in the mall? Those three-story advertising large screens were written yesterday with "50% off for the whole audience", but today, why did it become "new products to be launched"? How did you change this word? Could it be that you carry a ladder every day to climb up and change stickers? Let’s solve this mystery today. You must try it immediately after reading it!

1. A large disassembly of the principle of changing characters (it turns out to be that simple)

​​There are three core things​​: Control computer + software + data cable. It's similar to changing your WeChat avatar with your mobile phone, but the device is more advanced.

• ​​Wired pie​​: Use HDMI/network cable to directly connect the screen control card, suitable for fixed installation screens (such as rooftop billboards)
• ​​Wireless Party​​: Remote control of 4G/WiFi module, the promotional screen of milk tea shop is the most popular
• ​​Black technology flow​​: The cloud is updated simultaneously, and the headquarters is changed to stores across the country at the same time

For example, a certain gym chain uses a 4G control box. The coach changes the class schedule in the office computer, and the screen at the gate immediately changes - this is called ​​Technology changes life​​！

2. Step-by-step teaching (Xiaobai can also get started in three minutes)

▎Prepare a list of tools

1. ​​Software installation package​​: Generally, when buying a screen, the manufacturer will give it (recognize the installation file with the .exe suffix)
2. ​​Communication cable​​: USB to 232 serial cable (old screen) or gigabit network cable (new screen)
3. ​​Content material​​: Make pictures/videos of 1920×1080 pixels in advance

​​Key reminder​​: Be sure to take pictures of the screen parameters before the first operation! include:
→ Control card model (usually next to the power supply)
→ Screen resolution (such as P5 represents 5mm pixel pitch)
→ Communication Protocol (TCP/IP or UDP)

▎Five-step font modification method (do it without error)

1. Open the software click ​​【New Project】​​, enter the screen length and width pixel value (don’t guess it! See the parameter table given by the manufacturer)
2. Drag the finished pictures into the editing area and adjust them to ​​Fully preview window​​
3. Click ​​【Send Settings】​​, select the corresponding port number (COM3 or IP address)
4. Check ​​【Forced Refresh】​​ Options (prevent stuck in old screens)
5. Last point ​​【send】​​, stare at the screen and wait for 3-5 seconds

​​Common car overturning scenes​​：
→ The screen is gone? Check whether the image format is BMP or JPG
→ Color distortion? Change the color mode to RGB565
→ Incomplete display? Confirm that the pixel value is not entered wrong

3. Revealing the secret of advanced gameplay (the master's unique secret)

▎Regional control skills

Want to cut the screen into text on the left + video on the right? Do this:

1. Mark out in the software ​​Partition line​​(Support any rectangle division)
2. Select the left area ​​Text window​​, set scrolling speed/font size
3. Import MP4 videos in the right area, check ​​Loop play​​
4. Save as an independent scene file, switch different modes with one click

​​Tested data​​: A supermarket uses split screen to display promotional information, and the customer flow has increased by 23% (after all, dynamic pictures are more eye-catching)

▎Timed task settings

Want to automatically switch between different contents in the morning, noon and evening?

1. exist ​​【Planning Tasks】​​ Module add time nodes
2. Related material files
3. Open ​​【Holiday Mode】​​ Avoid special dates

For example, restaurants can be set up:

• Pop-up lunch set meal
• Switch to afternoon tea poster at 14:00
• Updated dinner menu at 17:30

4. Help! There is a problem with the change of the word (common troubleshooting)

​​Symptom 1: The software cannot connect to the screen​​
→ Check if the 232 adapter driver is installed
→ Try ping IP address on the network interface screen
→ Restart the control card power supply (90% of the problems can be solved)

​​Symptom 2: Text displays garbled​​
→ Change the font to Microsoft Yahei or Song style
→ Select GB2312 for encoding format
→ Delete special symbols &emoji

​​Symptom 3: Severe delay in update​​
→ Change to a SIM card with strong signal in 4G screen
→ Upgraded network cable screen into gigabit switch
→ Cut off unnecessary animation effects

Editor's opinion (the ten-year-old electrician's misunderstanding)

Nowadays, some cheap screens can drive people crazy by changing the word... It is recommended to choose to bring ​​Dual backup system​​ The main control card has a backup card and can't be delayed in the business world!

Let me talk about cold knowledge: big screens are actually afraid of cold! Remember to open the words after changing the words in the north in winter ​ ​Constant thermostat​​, LCD driver chips at minus 20℃ will go on strike, don’t ask me how I know (it’s all tears)

Finally, remind novices: be sure to change the word before ​​Disconnect the power supply​​! Although high-end screens now support hot-swap, power outage operation is still used for safety reasons. We don’t want to see the special effects of “lightning”, right?

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