XDB watch board

2020/8/8 : Try to use LGT8f328p, a domestic arduino chip, both of which are ssop20. You can use the rich libraries of arduino. It should greatly reduce the difficulty. After all, I can’t fill this hole that has been open for so long. .

2020/8/5 : Well, add the battery ADC.

2020/5/7 : A new version with STC as the main controller has been created. A charging circuit has been added, a vertical USB port, and the digging hole is at the right height.

Original: For the ECG watch in Lao Wang’s store, I made a board and controlled it with esp8266. If you don’t have technology, you can’t write programs. . Of course there may be problems with the design, but the pcb framework can be used. The screen is driven by ST7565. . It is recommended to use other small-package microcontrollers to make room for the battery, such as sop's stc, or you can use 328p to use the ready-made library on Adulong; it is recommended to add a clock chip, which is very suitable for making a clock; and to add a charging part, it is recommended With a vertical USB port, it is also convenient to dig holes in the back.

The picture below shows the routine options of the driver st7565 of the u8g2 library. The video is of running this routine.