SmartWatch

General description

This project aims to create an open-source smartwatch with the following functionality:

• 1.3" OLED display (bright enough to work in outdoor conditions)
• BLE module (HM-10), pin-to-pin compatibility with well-known HC-06
• small vibration motor (SMS/Call notifications and so on)
• STM32F103CBT6 microcontroller.
• Big external SPI flash memory (M25P40), SW OTA update and a lot of images can be stored there.
• BMC150 accelerometer/compass (can recognize double tap on the screen).
• BMP180 barometer/thermometer (just because there is a plenty of space).
• 320mAh battery allowing up to 3 weeks standby time (with BLE active).
• PCB size: 37*25, complete assembled height should be about 10mm.
• 3D models for all parts are in my KiCAD_libs repository, case will be available a bit later, so the whole project can be easily reproduced.

Hardware

Both schematic and PCB were created with KiCAD. KiCAD project is located in the PCB subfolder. Project uses components from my KiCAD_libs repository.
Status: Finished. PCB is assembled, all HW features are tested and work as expected. Standby time seems to be about 3 weeks (with BLE active).

Software

Project is created in EmBitz
Status: Can be used on a daily basis with some basic functionality (automatic date/time synchronization, SMS reception). Feel free to submit patches, create or discuss issues here.

Licensing

The whole project is available under GPL v3 license (see LICENSE file), except of files, which clearly mention other license type in the file header.