UART-Smartwatch

This App is a part of a Do-It-Yourself project: Build your own Smartwatch with a bluetooth UART interface, Firmware and Circuit. The Circuit uses low cost parts: Arduino Pro Mini, a HM-10 (CC2541) or Bluefruit LE UART friend or nRF51822-04AT serial bluetooth module and a monochrome oLED SSD1306 display (128x64 pixel). Firmware and circuit are modified for a low cost version.

## Details

The UART Smartwatch App is the non-mini App (master branch on github; "mini" is the gplay branch). You find UART-Smartwatch on http://f-droid.org and an APK on github.

## The Firmware

You get the Arduino-IDE file from github: https://raw.githubusercontent.com/no-go/UART-Smartwatch/gplay/UART-Smartwatch_firmware/UART-Smartwatch_firmware.ino

## Features

* blinking LED, if a new notification is present
* 250 chars notification buffer (Display needs so much dynamic RAM)
* Button 1: get a fresh time and the notification buffer from your smart phone
* Button 2: display the time and power level for 4 seconds
* Button 2 (press for more than 4 seconds): switch to a different time mode
* runs for more than 6h (first and second time mode)

## Time Modes

* Digital (4sec)
* Analoge (4sec)
* PipBoy Design (4sec)
* Digital for ever

## Circuit

Attention: You need a serial USB device (less than US 4$) to store the firmware on the ProMini chip. You need a small circuit (less than US 1$ on aliexpress) to load the Lithium polimere akku (Lipo).

## License

I publish everything under the free BSD-3 License.
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What's New

more freedom to configure your Bluetooth 4.0 Low Energy UART device! Preconfigured: HM10 - CC2541, Bluefruit and nRF51822-04AT
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Additional Information

Updated
July 31, 2017
Size
1.3M
Installs
100+
Current Version
3.2
Requires Android
4.4 and up
Content Rating
Everyone
Permissions
Offered By
Jochen Peters
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