The StickIt! main motherboard is used with the XuLA & XuLA2 FPGA boards to interface with PMODs and/or the Raspberry Pi.
The documentation, schematic and PCB files for this motherboard are included in the subdirectories. Design files for other StickIt! peripheral modules that plug into this motherboard can be found in other repositories, such as this one.
Everybody likes pictures, so here are some pictures of the StickIt! Board: