Alas, last week, a Lao Wang who runs a milk tea shop asked me: "The newly installed LED menu screens are squeezed into a ball. Where should we adjust the spacing between these characters? "This made me ask so hard that I slapped my thighs—there are more and more businesses using LED screens now, but eight out of ten are stuck in the basic settings level. Today we will break it apart and talk about this matter. We will save you several cups of milk tea after reading it.

First understand what the spacing between characters is

To put it bluntly,​​The spacing between characters is the gap between characters​​Just like the pearls in milk tea cannot be squeezed into a lump. Adjusting the LED display screen is similar to adjusting the fonts on your mobile phone, but you have to use special software. There are two common adjustment methods:

• ​​Direct software adjustment​​: Find the "word spacing" option in the control software, enter the number directly or drag the slider
• ​​Code modification​​: Advanced players can adjust parameters by modifying the configuration file of the control card

The key point is here! ​ ​Be sure to save the original settings before adjusting​​Last year, a customer adjusted the spacing to a negative number by hand, and the words were all folded into QR codes.

Four-step practical guide (you can learn even if you are disabled)

1. ​​Connect to the equipment​​
   Connect the computer and display control card with a network cable or serial cable, just like connecting a charging cable for a mobile phone. Notice! ​ ​It is best to use a six-type cable with shielding outdoor screens​​, otherwise it will be easily disturbed

2. ​​Open the software​​
   Open the control software (common ones include LEDPlayer and Lingxin Vision), and find the word spacing option in the "Text Editing" interface. Different software positions may be different, but the icons all look like the symbol of "word + A→"

3. ​​Test parameters​​
   First set an intermediate value and try the water:

   • Indoor display screen: 3-5 pixels are recommended
   • Outdoor advertising screen: 8-12 pixels (the viewing distance must be considered)
   • Sports stadium screen: Starting from 15 pixels
     The fenced screen we made for Tokyo Stadium has the word spacing to 18 pixels, and it can be seen clearly from 50 meters away

4. ​​See the effect​​
   Click "Send" and stare at the screen for 20 seconds. Focus on checking:

   • Are characters with complex strokes (such as "Xin") stuck together?
   • Will there be any dragging when scrolling quickly?
   • Is it evenly viewed at different angles

Three common car crash scenes

Recent acceptance discoveries​​Death operation​​：

1. Change parameters directly on the control card interface and do not save
2. Use PS to adjust the spacing and import it, and the result is secondary compressed by the software
3. The screen curve is not considered, the plane setting is used on the curved screen

Let me teach you some tips for testing:​​Take slow motion videos with your mobile phone​​, observe the consistency of text scrolling. A chain of milk tea shops increased the order efficiency by 30% last year.

Advanced skills (the skill of the master)

• ​​Dynamic spacing​​: Let the word spacing be automatically adjusted with the content, such as the promotional information spacing is large and the regular menu spacing is small.
• ​​Regional settings​​: The upper half of the screen is increased to attract customers from a distance, and the lower half is reduced to display more content
• ​​Environmental adaptation​​: Connect the light sensor probe, automatically reduce the pitch during darkness to save power

Remember the transparent window screen I made for Seoul Mall last year? We used the automatic adjustment technology of time segmentation, with a spacing of 12 pixels during the day and a reduction of 8 pixels at night, saving 25% of the electricity bill

Personal advice

Adjusting the spacing between characters is like cooking milk tea - three points rely on technology and seven points rely on experience. Three must-remembers:

1. ​​Do addition first and then subtraction​​: From large spacing to small adjustment, it is safer than from small to large adjustment
2. ​​Different fonts are treated differently​​: The spacing between bold characters can be smaller, and Song font must be larger
3. ​​Regular inspections​​: It is recommended to test once a quarter. The attenuation of LED lamp beads will affect the actual display effect.

Finally, reminders: Now all the latest control systems are equipped with​​AI intelligent recommendation function​​, can automatically generate recommended values based on screen size and viewing distance. This kind of intelligent system is 10% expensive in the early stage, but it can save 50% of debugging time. This account must be calculated clearly!

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