open source project which use esp32s3 develop a smart watch

survivor1111
Posts: 2
Joined: Tue Oct 21, 2025 8:52 am

open source project which use esp32s3 develop a smart watch

Postby survivor1111 » Tue Oct 21, 2025 9:06 am

Hello everyone, I have developed a smart watch using the LCKFB-SZPI-ESP32-S3-VA (if you want to buy,the link is https://www.lcsc.com/).
Its functions are as follows:

1, WiFi Management: Supports enabling/disabling, scanning, and connecting to networks. Upon obtaining an IP address, it automatically sends an SNTP request to sync time to the local RTC. It also fetches weather data via HTTPS (China region only) and updates the UI accordingly.
2, BLE HID Device: Implements standard HID protocol over BLE GATT. Displays pairing PIN on screen; after encrypted connection, controls volume up/down, song next/previous, play/pause.
3, SD Card File Browser: Reads and displays SD card contents using LVGL widget lists. Supports directory navigation and BMP image viewing.
4, Camera Integration: Drives GC0308 camera for real-time preview on SPI LCD. Captures photos (press BOOT0 button) and saves as BMP to SD card.
5,Simple Calculator: Uses dual stacks (one for operators, one for operands) to handle basic arithmetic (+, -, *, /) with parentheses, supporting nested expressions like "(1*((6+2)/4)-6)".
6, Settings Interface: Configures system options, such as weather API location, screen brightness adjustment, internal RAM and PSRAM usage monitoring (if enabled), and SD card info (mount status and capacity).
7, Calendar and Canvas: Basic calendar view and simple drawing canvas.
8, Deep Sleep Mode: Retains only RTC power domain; RTC clock continues running. Upon wake-up, UI time resumes without resyncing via SNTP.

link:
github https://github.com/survivorhao/esp32s3watch/
gitee https://gitee.com/survivorh/esp32s3watch
The README.md file in the GitHub repository contains a detailed description of this project.

If you are interested in this project, please give it a star. Your star is my greatest motivation.

Minatel
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Espressif staff
Posts: 433
Joined: Mon Jan 04, 2021 2:06 pm

Re: open source project which use esp32s3 develop a smart watch

Postby Minatel » Tue Oct 21, 2025 1:37 pm

Thanks for sharing!

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