Note: * is required.
[Please fill in during the registration stage↓]
* 1. Self/team introduction
I am personally interested in open wearable devices and have been doing design and development in this area.
* 2. Briefly introduce the project
- A unique watch, simple and beautiful
- Without a big screen, it’s definitely not a bracelet.
- Half the time, half blank, delve into the present and create the future
- It comes with a geek style, the resources are not closed, and it is open and programmable to create your own watch.
- Four-pin magnetic charging, taking into account firmware download
- Modular design, removable
- The main control board is separated from the display board, making it easy to replace with other MCUs
[Please fill in during the competition stage↓]
* 1. Describe project details
- The main purpose of this project is to make a programmable ultra-thin open source watch with a focus on openness. We hope more people will join in.
- Make differentiated designs from product concept and appearance to open the door to programming
- The appearance is simple and elegant. It is not a semi-finished product simply put together with a development board. It can really be worn when going out.
- The hardware resources are completely open, making it easy to write your own applications according to your own needs.
- If you don’t have many requirements, it can be used as a fashion watch and it can fully meet the requirements.
- The circuit design adopts a modular design, and the display and main control parts are separated to facilitate the later replacement of different main controls in order to achieve different performance requirements.
- In terms of interaction, a capacitive touch button is used to respond to user operations.
- Firmware download can be completed using a magnetic data cable, which can also take into account the charging function.
- Functionally, it supports the most basic timing functions, and games, step counting, settings, etc. have also been adapted.
- More functions need to be discovered by everyone.
- There are also many main control options, such as NRF52 series, GD32 series, ESP32 series, etc.
- The display board currently supports LCD screen and LED matrix, and can achieve different display effects under the same shell.
- The board can be modified to your own by wiring it according to certain signal rules.
- Supports Arduino/micropython development or native SDK development. The ecological resources are relatively rich and easy to get started.
- Size: 35 (length)
*38.5 (width) *8.7 (thickness) mm
* 2. Describe the challenges faced by the project and the problems solved
- I hope to combine programming and fashion so that the product I create is not only a programming learning tool, but can also be well integrated into life.
- Need to support different display solutions, such as LED matrix or TFT
- The project needs to be coordinated and adjusted in terms of appearance, circuit, structure, etc. It is not just a semi-finished circuit board. It needs to take into account circuit size, battery capacity, modularity, etc.
- To achieve the effect of the rendering, we need to start from many aspects. For example, if the display window uses customized semi-transparent glass, the real effect should be better.
- In order to make the structure more compact and easy to separate, the circuit board and battery have made some adjustments and adopted a separate structure.
- Use ready-made materials as much as possible to reduce unnecessary customization and minimize costs.
- In terms of reminders, a vibration motor is used. Currently, I can only find the smallest 0820, try to fit it in as much as possible.
- Try to add as many sensors as possible to this project
* 3. Describe the key points involved in the hardware and software parts of the project
Hardware parts
- Adopting modular design, the display board and main control board are separated
- The display part currently supports 0.96-inch and 1.14-inch screens and LED matrix, integrating basic RTC, motion, charging, backlight, voltage detection, and lithium battery switching circuits
- The main control part integrates basic firmware download circuit, power supply circuit, and minimum core circuit
- The two boards use B2B connectors to realize signal docking
- Support SWD debugging
- It can be replaced with different boards according to different ideas, such as replacing the display screen with an LED matrix, or replacing it with other main control GD32, etc.
software part
- Mainly focused on power consumption processing and UI interaction
- The power consumption processing of the program is mainly to put as much MCU into sleep state as possible
- Ensure low-power processing of sensors, etc. as much as possible
- Write a UI switching framework to facilitate adding each functional page
- Write key response processing
* 4. Project material list display
- For details on components, please refer to the BOM list.
- The strap is a common strap with a width of 20mm
- Two button magnets with a diameter of 4mm
- 4 elastic thimbles
- 1 USB magnetic charging cable
* 5. Upload project pictures
5.1. Print the competition logo picture on the PCB. Failure to do so will be deemed as giving up the competition
. 5.2. Other pictures of the project
* 6. Demonstrate your project and record it as a video for uploading
Since the video is too large , if you want to watch the high-definition version, please move to the link below.
Friends who like it can help me like, collect, and forward it. Thank you.
* 7. Whether it is released to the public for the first time
first public
* 8. Open source documents
See project attachment for details
* 9. References
Click the link for more details: https://www.szlcsc.com/go/dsxq
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