7LT130GNK_328_6312

Vacuum fluorescent display, referred to as VFD;
 
when you see the charming colors for the first time, you will have a subtle heartbeat. This indescribable feeling is really heartbreaking; because it is made using modern technology, and chips Compared with the nano-level craftsmanship, her micron-level posture allows you to appreciate it with the naked eye, and then lament the development of science and technology and the shallowness of your own knowledge; with a beautiful appearance and a reserved heart, it is not easy to be beautiful. Filament /High voltage/chip, three-way power supply, a slight deviation will lead to a dead end.
Modern technology is indeed developing too fast. With the short-lived DVD and the rapid replacement of VFDs by LEDs, too many VFDs have been eliminated before they are used. However, cheap devices have provided us DIY players with great benefits. As a material, she should have been buried in history, but she also gave off a different kind of spring light;
 
and what is even more confusing may be that once she gets involved, she will become addicted. Why? ? ? Because of difficulties, maybe we will be confused, and those of us who are shameless will become addicted because of difficulties? Yes, we are actually happy to enjoy the happiness of solving difficulties. No matter how difficult the process is, the result will be happy, because the wide variety provides us with more possibilities for happiness. In the final analysis, it is the fun of conquest!
 
This transformer solution is an economical configuration, and the circuit is relatively easy to understand. If you want to DIY
the big and expensive components [screen & transformer & display driver chip & microcontroller & clock chip]
, you can ask me to buy the screen + transformer + Display driver IC, or finished product.
 
I am very good at programming microcontrollers. In order to facilitate the display of numbers, I connected the segment codes in a way that I thought was good for programming. When DIYing, I can change it at will according to my own needs.
Of course, since there is no voltage stabilization solution and does not support wide-voltage input, the chips support a maximum of 5.5V, so the voltage cannot be high, and the brightness will decrease as the voltage decreases. The brightness is still wow when using a standard 5V power supply, and the ancient The mobile phone charger is completely stress-free.
 
Xianyu screen link: https://m.tb.cn/h.fv9b4xD?tk=5aRl2MpPeO7
 
Key items:
VFD screen: 7-LT-130GNK
Power supply driver type: Transformer type
Display driver IC: CS16312 or PT6312
Clock IC: R8025T
Microcontroller: LGT8F328P
Buttons: 6*6*9mm *3
download ports Wiring settings: See stroke comparison and wiring
 
Arduino support file
Although LGT8F328P is compatible with ATMEGA328P, there are still differences.
Use the attached library file to get a better experience. There are detailed instructions.
Attachment: nulllab_arduino-master.
 
The routine
will be uploaded after sorting it out.