Three-digit LED digital tube

It is a three-digit LED digital tube, a single-color LED, and packaged in 0603.
The main control chip is TM3130, a single bus chip, like WS2812. Can control 8*4 dot matrix.
Physical display video: making a large LED digital tube, controlled by an IO port_bilibili_bilibili
 
open source video: Electronic Studio - personal space_bilibili_bilibili
main control chip TM3130 introduction: LED dot matrix driver Introduction to chip TM3130_Bilibili_bilibili
 
component purchase recommendation: [Tencent Document] Electronic Studio Sharing Form https://docs.qq.com/sheet/DYm1tTUFlRWhkQVJt
 
PCB proofing: I printed the board at JP (JP, YYDS , has a high tolerance for puzzles), this board is recognized as a puzzle in JLC, if you play it in JLC, you have to play it twice, and the opportunity of twice a month is used up. Separate the PCB yourself. You only need to change the border layer and it should be fine. It is recommended to make the board black for better effect.
 
Welding: Welding or teppanyaki, pay special attention to the fact that I used a self-made package for the LED. The dot end is the positive electrode, so don’t weld it wrong. If it's wrong, it won't light up. Just use a soldering iron for the chip on the back.
Then there is the issue of pin headers. I used reverse-bent pin headers. After welding is completed, the excess needs to be cut off so that the panel can be close to the LED. But I found it was not very easy to cut.
 
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