Open-source boards designed in KiCad by zhiyb on GitHub, from 4 repositories. A board’s address here is its repository’s there.
zhiyb/ft2232h_dprobe
FT2232H debug probe
zhiyb/fpga
FPGA (DE0-Nano) attachment PCB designs for fun
zhiyb/lasers
Playing with dangerous show lasers
zhiyb/test_dev_board
Test dev board PCB for fun