The clock is based on WS22812b addressable LED strip and WEMOS-D1 mini (ESP-12F) board. In my case it is running the ESPHome software in combination with Home Assistant (see link below). Fusion 360 files are also available.
To get result like on the photo, I used to insert filament change g-code after 1mm printing of “clock screen” part and switched from white to black PLA.
The author marked this model as their own original creation.