HL-D793 VFD clock

HL-D793 VFD clock project, this screen was previously available at Lao Wang’s house, if you have it you can make one

• Accurate travel time, using DS3231's own RTC with temperature compensation, the annual error is as low as less than one minute
• Using charge pump + Cuk topology driver, it has lower negative voltage power consumption than Buck-boost made with Buck chip
• With temperature sensor, you can check the room temperature
• The roulette wheel will rotate as time changes
• Time and temperature scroll alternately
• Displayed from Monday to Sunday (the top row also has the first Chinese character showing the day of the week)
• It doesn’t have many functions, but we use V!!!F!!!D!!!, it looks good and that’s it.
• The program may be updated later, please pay attention
• The source code will not be released (the writing is too bad) and only BIN files are burned.

The power consumption is only 0.5W, and the starting current is very low. It can be powered by any junk charger.

• How to adjust the time: Press "SET", then press "SEL" to control the top cursor to the corresponding number, press "UP" DOWN" to perform addition and subtraction operations, control the cursor to the first one, and then press "UP" to save