Hardware

Hardware

PCB Project

https://oshwhub.com/44670/44watch_copy

Datasheets & Resources

AC6921A:

• https://item.taobao.com/item.htm?id=575054598019

• https://item.taobao.com/item.htm?id=616649464342

• http://www.yunthinker.com/FileUpLoad/DownLoadInfosFile/637729990813300469.pdf

Transparent OLED:

• https://item.taobao.com/item.htm?id=645424821640

• https://www.crystalfontz.com/product/cfal12856a00151b-128x56-transparent-oled-screen

AP3012:

• https://www.diodes.com/assets/Datasheets/AP3012.pdf

TP4057 (The direction of silkscreen is drawn in the datasheet, do not mistake it while soldering):

• https://datasheet.lcsc.com/lcsc/1811021622_TOPPOWER-Nanjing-Extension-Microelectronics-TP4057-42-SOT26-R_C12044.pdf

Battery:

• 402040 3.7V Li-ion battery. Please note that for safety reasons, a built-in protection circuit is mandatory for the battery. It's crucial to ensure that the battery you select has this protection circuit to prevent any potential safety hazards.

请注意，基于安全原因，402040 3.7V锂离子电池必须具备内置的保护电路。选择电池时必须确保其有此保护电路，以防止任何潜在的安全危险。