Add board and schematic.
Revert "Add board and schematic."

This reverts commit 1dd3dedd8067eb7cd0be1ea5eb518b44bcefec04.
Revert "Revert "Add board and schematic.""

This reverts commit 12bba534f78cff0789b5f26f8dc1c85a06878c39.
Remove before re-commiting ...