This watch is highly inspired by Watchy by SQFMI and inherits its board outline and in fact uses the same voltage regulator, charging chips and vibration motor driver circuit . But unlike the Watchy which is based on ESP32, MorphWatch is based on STM32L476RG which has 128KB RAM and 1MB of flash. This chip also comes with DFU bootloader feature which enables you to upload firmware without connecting any FTDI chip externally. Further it also has an inbuilt RTC inside. Unlike the Watchy which has a 3axis IMU this board has a 6Axis IMU. However since this STM chip doesnot have inbuilt Wifi and Bluetooth capabilities like the ESP32 on Watchy. So i had to connect an external bluetooth which actually has undone the advantages in terms of PCB real estate that i might have saved because of STM32L476rg's inbuilt RTC and DFU mode. I have used JDY08 for communicating with smartphone. The board also supports firmware upgrade using serial wire debug and full debugging features like breakpoints and print statements by connecting external STlink Debugger. I would also like to mention the 7 low power modes supported this STM chip and there is also a possibility to keep the internal RTC on and shut down rest of the controller.
I am planning to build a few prototypes and write software for it. But i am very tight on Budget and time. So i am looking for support from the community. If you would like to see morph watch come to life please join me in the development process. Also you can star or watch the git-hub repository to show your support for this project. Also meanwhile you can also back the cool watchy by SQFMI at crowdsupply.