Below are PDF and DipTrace schematics for Tessel and its modules. Board layout files (and supporting files for silkscreen) are provided in DipTrace format.
All files and designs are licensed under CC-BY-SA.
NOTE: many components on the board lack proper 3D models (we used the closest thing we could find), so don't trust them to more than ~0.5mm. Board dimensions and holes are correct, though.