[Open Source] Home Clock That Never Needs Battery Changes - With Cable

Overview: I always find electronic clocks at home too small, with mediocre display quality. I have to strain my eyes to see the time clearly, which is uncomfortable. Also, electronic clocks usually use Arabic numerals and either a 24-hour or 12-hour system. I'm not saying they're bad, but I've always used quartz clocks at home, and I'm not used to them. I find quartz clocks the most comfortable to look at—they're large, don't have the strange color pollution of LED lights, and I can easily tell the approximate time with a quick glance. I don't need precise time; precise time always gives me anxiety and a sense of oppression. I live in the countryside and enjoy this relaxed, free-flowing feeling of time.
Current Situation: Quartz clocks are widely available in supermarkets, convenience stores, and general stores, in various sizes, but they all use dry cell batteries, which need to be replaced every few months.
Optimization: This project designs a simple, inexpensive module that allows quartz clocks to operate without maintenance, providing continuous power. This allows users to enjoy the visual appeal of a large clock while eliminating maintenance and hassle.
Implementation: After receiving the board, remove the two squares in the middle for later use. Then solder the components, and solder the two squares to their respective ends, with the smaller one at the top (positive) and the larger one at the bottom (negative).
Optional 1: Components as shown in the diagram. If lighting is not needed, they can be left unattached.
Optional 2: If there is no supercapacitor, multiple ceramic capacitors can be used as a substitute, but the power-off time may be shorter.
The purpose of these capacitors and supercapacitors is to ensure the clock can continue to operate normally even during short power outages, avoiding the need for time recalibration.
Lighting Arrangement: Solder the lighting as shown in the diagram. Note that the photoresistor should face outwards inside the mainboard mechanism.
TYPE-C Soldering Precautions: When soldering the socket, ensure it is slightly tilted to facilitate insertion of the TYPE-C charging cable.
Usage: Finally, find a 5V 200mA or higher power adapter and a TYPE-C charging cable. Continuously plug the power supply into the mains to power the quartz clock. For a neater look, find a wall socket to hide the power adapter and charging cable.
Video Description: [This is the clock you should have at home; add one item and it'll be maintenance-free for life! - Bilibili] https://b23.tv/9UiRh0z