Watchy USB-C no frills case

I am a smartwatch aficionado and could not resist this little gem available on Ali for a very reasonable price. Since none of the watchy cases I found are water tight anyway and the case I downloaded and printed did not fit, I decided to design a case without fiddly buttons and instead make it as compact as possible and compatible with the supplied wristband. I recommend to use PETG as printing material as it is robust and biocompatible. Assembly: First insert the velcro strap in the PCB board stack. The lower part then snap fits to the board stack. Finally the top is screwed to the stack with the four original screws.

Unfortunately this nice little open source smart watch never found a big community, so software wise is very limited, despite the really nice hardware it features, its relatively low cost (<40USD) and the extremely good looking e-ink display. This means the stock firmware just looks good and works as a step counter. Unfortunately the time zone is hardcoded so renders the device unusable as a watch... Arrgh!

A hint if you want to embark on installing custom firmware: the V2s sold on Ali do not support reset on USB connection, they require you to solder a reset button to short GPIO0 to GND upon USB connection (TPs accessible on board), so really only recommended for hardcore tinkerers :-)

A few remarks on firmwares from github: Chronos firmware regularly freezes so is utterly useless. The Inkwatchy has many features, but unfortunately Wifi credentials are hard coded, so it is useless as well unless you want to spend hours to set up a working development environment and compile yourself (I leave that to hardcore level 2 tinkerers ...). The only thumbs up I can give is to the GSR firmware which is pretty neat and features an AP mode so you can configure weather, NTP and wifi access. It is the only one I found btw that works out of the box with full functionality.

Enjoy!