PineTime Upgrade Board

The PineTime smartwatch has been a popular choice among wearable technology enthusiasts for its affordability and feature-rich capabilities and is opensource.

https://wiki.pine64.org/index.php/PineTime

Here’s what you need to know about the new replacement board:

1. Improved Processor: The new board comes with an updated processor nRF52840 that offers better performance and energy efficiency compared to the previous one. This means that users can enjoy a more responsive and smoother user experience.
2. Larger Memory: The new board boasts an increased memory size, allowing for more apps and data storage.
   The new processor has 256 Kb of memory and 1Mb of storage.
3. Perfect replacement of the older board.
4. New location of the programing pinouts, for better access.
5. Two extra pins for debug, serial rs232

Idea
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Schematics

https://oshwlab.com/joaquimorg/pinetime40

Components used :

• SOC
  • NORDIC nRF52840
• SPI Flash
  • XT25F32BDFIGT-S
• Power Management
  • Battery Management – SE9017-HF
  • Linear Voltage Regulator – AP2112K-3.3TRG1
• Sensors
  • Heart Rate Sensor – HRS3300
  • Attitude Sensor/Gyroscope – BMA400
• Touchpad
  • CST816S
• LCD 
  • 1.3″ 240×240 IPS LCD Panel

Board design

Board manufacturing

Board assembly

Testing the board and first program

Sample screens created in Square Line Studio

Sample code

Future

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