Hamboo

# Hamboo - ⌚ a smart watch project based on the Esp32S3 - - - ``` The smart watch project based on the Esp32S3 chip has integrated hardware such as touch screen, wireless charging, gyroscope, barometer, power management chip, speaker, vibration motor, and external RTC. In the subsequent version, hardware support such as NFC, heart rate and blood oxygen will be gradually added. Welcome to exchange and learn together. At present, the watch is still in development. Some functions have not yet been verified, and the software functions are still under development. Students who want to enter the pit in advance can contact me, and we can improve this project together. ``` ## 1. Hardware ### 1.1 PCB ``` Main circuit board: single-sided four-layer board design, easy to use welding table welding while reducing the overall thickness. The whole uses 0402 components, and the antenna part of the clc circuit uses 0201 components (students with difficulty can directly weld 0Ω resistance or directly connect the circuit and then plate). NFC circuit board: The FPC material design is used, and the connector is connected to the main circuit board. This part has not been verified and it is not recommended to hit the board. Secondary circuit board: It is planned to add a secondary circuit board to house the heart rate blood sensor, and consider migrating the wireless charging circuit to the secondary circuit board. Note: When printing PCB, select 1.0mm thickness and impedance matching [JLC04101H-3313]. The optional part of the circuit board is the magnetic burning mode, mainly to facilitate the burning debugging, and the students who do not need to remove this part of the PCB before hitting the board. The circuit board is reserved for the row of pinholes, which can be welded and burned using a USB data line or using a burning clip. ```  ### 1.2 3D Modeling & Printing ``` For modeling using blender-4.1, the source files and 3D related materials are found in the links below. ``` [Click to download the source file 3D printing related information](https://pi-ip.oss-accelerate.aliyuncs.com/upload/%E5%A4%96%E5%A3%B3%E8%B5%84%E6%96%99.zip) ## 2. Software ### 2.1 Rust+Slint solution ``` Use Rust language + SlintUI framework for software function development. At present, part of UI has been realized, and related functions are being iterated step by step. The location of code warehouse Github: 🔍"hamboo-rs" ``` ### 2.2 C+Lvgl方案 todo! ## 3.Cost chapter ### 3.1 Costing  | Subject | Model | Unit price (including freight) | Remark| | --- | --- | --- | --- | | PCB | Thickness 0.8/1.0mm | ¥0 | See 1.1 PCB Order Precautions | | BOM | | Calculating... | | | 3D printing | White resin | ¥20 | Preferential price for the first order | | Screen | P169H002-CTP 1.69inch | ¥29 | | | Watchband | apple watch(7/8/9) | ¥13 | Shop according to your own preferences according to the model | | Wireless charging coil | 3021 12.5uH | ¥1.5 | | | Loudspeaker | 1506 | ¥10 | | | Battery | 302530, 3.7v 250mAh | ¥7 | | | Vibration motor| 3610 | ¥5 | You can place an order in a BOM table| ### 3.2 Cost Optimization ``` todo! ``` *⚠️ Concentrate!!! Don't rush to fork just yet, it's only a preview and not a stable version yet* ## 4. Solicitation of opinions ``` In the process of improving the function of the watch, we solicit opinions from you!! The watch will eventually move in the direction of high playability, and the current vision is for the watch itself to support a variety of single-finger games, and can be combined with the controller to become a mini console. For the design of the handle and the combination of the watch, I hope the students can contribute valuable opinions. The following is the idea of two design schemes, but the size and combination of the way is not satisfied, but also please the students to offer suggestions!!! ```