VFD clock

Preface: The ESP01S in this project has not yet been integrated; it will be added later when time permits.
 
1. Project Name:

Design of a Fluorescent Clock Based on the LCSC Liangshan School Theme;

2. Objective:

To achieve the effect of telling and setting time, emitting a charming faint green color at night;

3. Function Introduction:

Time display,
calendar display,
tomato seed display

; 4. Skills Acquired:
4.1 Hardware Design Ability:

Learn embedded circuit analysis skills and how to understand schematic diagrams;
gain basic knowledge of component selection and datasheet reading; learn
the working principle of fluorescent displays and basic methods of embedded circuit design;
learn schematic design and PCB design skills, cultivate independent project design thinking;
master component soldering and hardware debugging skills, becoming a new generation of "Soldering Master";

4.2 Software Development Ability:

Understand the basic functions of GD32 and the use of peripherals, and get started with GD32 project development;
understand the PWM principle and implement PWM control of different duty cycles;
understand the IIC principle and achieve communication with the IIC chip;

5. Problems Encountered and Solutions (Very Important):

Screen driver not working. Reason: Poor soldering of the driver chip, resoldered;
garbled characters displayed on the screen. Reason: The driver chip may be pirated, resulting in a slower refresh rate. Try finding a legitimate one.