nRF52 DIY Smartwatch

A smartwatch based on nRF52840, with round display, and Android App

Fleshdeck

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Description

Inspired by some projects, I wanted to make my own smart watch. I started development last summer, and already at the beginning of autumn I had a couple of watches assembled. For several months I have been writing software for watches and smartphones.
Now the clock is working stably, of course there are some nuances and bugs, but I plan to fix them in the next version, and add some features.

Details

Hardware
* nRF52840(Holyiot-18010)
* 240x240 IPS Display(GC9A01)
* BMA423 Accel(Steps and tilt wrist)
* 8Mb QSPI Flash Memory
* USB Type-C for programming and access to flash memory
* 4 Hardware Buttons
* MAX17055 1-Cell Fuel Gauge
* 500mAh LiPo battery
* DRV2605L Haptic Motor Controller
* Small size

Software
* Shows time
* Call notifications
* Message notifications
* Over 7-day battery life with BLE connected
* Gadgetbridge support
* BLE communication secured with passkey comparison pairing
* Current weather
* Music player control
* Flashlight mode
* Find phone function
* OTA update

In Future
* Go to more available components
* Make other buttons for case(I bought buttons in a local store, but in Ukraine there is a war with Russia and the store will not work)
* Add NFC antena
* Add a pulse oximeter(MAXM86146)
* Draw more app and weather icons
* Using other displays

More details can be found on github https://github.com/FleshdeckTV/nRF52-Smartwatch