aytwartoofyoroo

Smart watch-puls version

Overview

1. Version description
This is actually the third generation, referred to as the PULS version (just kidding~).
As for the previous generations, they will not be released (mainly because they are not well made).

The V3.0 version adds a touch IC and integrates the driver part of the OLED screen into the PCB.

The V3.1 version replaces the OLED screen driver SSD1306 with SSD1315. The program is roughly the same. SSD1315 is newer than SSD1306 and has a faster speed. It can be driven by 5V,
eliminating the voltage regulator IC.

2. Hardware description
The main chip uses STC15W408AS, 16P package.
STC15W408AS has 8KB FLASH, 512 bytes RAM, and 5KB EEROM (which can be used to store OLED fonts).
In order to make the motherboard smaller, no micro switch is used, but 3 touch switches are used.
The touch IC uses TTP233, which has only 6 pins and can connect a touch switch.
Since three touch buttons are used, it is necessary to have such a 3 touch IC.
The clock chip uses DS1302, there is really no other way, because DS3231 is too gui (no man): (
The lithium battery is 150mah, 3.7V. For this watch, it is completely sufficient.
3. Function introduction
The highlight is here, this watch has alarm clock and perpetual calendar functions,
test video:

Design Files

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Update:2025-06-19 17:01:49

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