UART Smartwatch

Bluetooth App for a UART-Smartwatch

This is a bluetooth low energy UART terminal app for a do-it-yourself Smartwatch.

App features:

  • notification buffer
  • is notification to long: use of notification title
  • some emoticons works
  • german Umlaute works
  • transmit more than 20 bytes
  • automatic reconnect

Get firmware, screenshots, documentation and circuit from UART-Smartwatch Website.

UART-Smartwatch firmware features:

  • Press Button 1.5 s: sync the time between watch and phone. Show date and notifications as scrolling chars.
  • Press Button 0.5 s: show the time calculated by the watch. Show the battery level and an analog clock
  • small analog clock
  • digital clock
  • Battery Level
  • more than 18 hours with LiPo 3.7V (170mA)

The DIY smartwatch shows a calculated time without a connection to your phone. This time is a bit faster to pretent problems. It is about 10 second in 6 hours.

Packages

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 3.2 (32) - Added on 2017-08-02

    This version requires Android 4.4 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 1.3 MiB PGP Signature

    Permissions

    • android.permission.BLUETOOTH
    • android.permission.BLUETOOTH_ADMIN
    • android.permission.ACCESS_FINE_LOCATION
  • Version 3.1 (31) - Added on 2017-05-29

    This version requires Android 4.4 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 1.3 MiB PGP Signature

    Permissions

    • android.permission.BLUETOOTH
    • android.permission.BLUETOOTH_ADMIN
    • android.permission.ACCESS_FINE_LOCATION
  • Version 3.0 (30) - Added on 2017-02-20

    This version requires Android 4.4 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 0.5 MiB PGP Signature

    Permissions

    • android.permission.BLUETOOTH
    • android.permission.BLUETOOTH_ADMIN
    • android.permission.ACCESS_FINE_LOCATION