Smart Watch

Project Overview:

In this project, you'll learn how to build your very own open source smartwatch or fitness tracker. This project leverages the powerful RP2040 microcontroller and the stunning Waveshare 1.28 inch exotic round display. Additionally, it incorporates a gyro and accelerometer for motion sensing, all housed in aesthetically pleasing 3D printed cases.

Materials Needed:

1. Microcontroller: RP2040
2. Display: Waveshare 1.28 inch round display
3. Sensors: Gyroscope and Accelerometer
4. Battery Management: ETA6096 or similar
5. 3D Printed Case: Custom designed for aesthetics
6. Miscellaneous: USB Type-C receptacle, connectors, and wires
7. Software: EasyEDA for PCB design, Arduino IDE for programming

Steps to Build:

1. Design and Print the Case:

   • Use 3D modeling software to design a custom case for the smartwatch.
   • Print the case using a 3D printer, ensuring it fits all the components snugly.

2. Assemble the Components:

   • Solder the RP2040, display, gyro, and accelerometer onto the custom-designed PCB.
   • Connect the USB Type-C receptacle for power and data transfer.
   • Attach the battery management system to ensure safe and efficient power usage.

3. Program the Microcontroller:

   • Write the firmware using the Arduino IDE, incorporating libraries for the display and sensors.
   • Ensure the firmware includes functionality for step counting, display updates, and power management.
   • Upload the firmware to the RP2040 using a USB connection.

4. Fit the Components into the Case:

   • Carefully place the assembled PCB and battery into the 3D printed case.
   • Secure all components in place, ensuring the display and sensors are properly aligned and visible.

5. Test and Calibrate:

   • Power on the smartwatch and check the display for proper functionality.
   • Calibrate the gyro and accelerometer to ensure accurate motion sensing.
   • Test all features, including step counting and display updates, to ensure everything works as intended.

6. Final Adjustments:

   • Make any necessary adjustments to the firmware or hardware to improve performance.
   • Ensure the case is securely closed and comfortable to wear.

Additional Features:

• Customization: You can modify the 3D case design to suit your personal style.
• Open Source: Share your design and code with the community to contribute to the growing field of open source wearables.
• Expandable: Add additional sensors or features as needed.

Conclusion:

Building your own smartwatch or fitness tracker is not only a rewarding project but also a great way to learn about electronics, programming, and 3D printing. Follow these steps to create a unique, functional wearable that you can be proud of. Happy building!