To download the program for CH552T microcontroller, refer to this open source project

Function demonstration video

Supplementary production notes and development process

The bulk of the cost is mainly about 100 for IV-18 lamps, about 50 for cutting stainless steel pipes, DS3231MZ+, HV5812, and board making. DS3231MZ+ can be replaced by DS3232MZ+ or the low-precision DS1307.

For power supply, it is best to use a 5V 1A power adapter. It is okay to have a larger output current. A regular mobile phone charger will suffice. The peak current at power-on is about 712mA, the normal operating voltage is 4.8V, the average current is about 170mA, the peak current is about 200mA, and the HV5812 high-voltage power supply is 48.8V.

The new version of the ship still needs to learn modeling and ESP32 to make it. The DS3231MZ is already sky-highly expensive.

update record:

2021-9-28: Fixed the problem of not being able to light up on time after turning off the display at night, turning off the long-term display of the label that turns on the night-time display function (the switch status is only displayed when entering the settings), and adding - flashes per second .

Additional notes:

1. Pay attention to the temperature sensor pin sequence, and carefully look at the temperature sensor board in the picture below as a reference.

The following text content is in the form of pictures because it cannot pass the review. If you have any questions or think about it, please tell it in the comment area. That's it for now. I will add more if necessary.