I have written a blog article on the project here:


https://electronut.in/ice-bling-making-led-earrings-with-an-fpga/

Here's the schematic for iCE Bling.

The PCB was designed using Altium Designer. It's a 4-layer board.

We also made a special pogo adapter for programming it:


Verilog code and PCB schematic (PDF) at repo below:


https://gitlab.com/electronutlabs-public/ice-bling