chess board for Raspberry PI Chess Computer

Chess board for Raspberry PI Chess Computer. See https://github.com/rmarabini/chess/wiki for details.

The board size is about 34 x 34 centimeters (each square is 4 x 4 cm).

chess.stl contains the whole board
chess_2_2_XX.stl is one forth of the board
XX.chess_4x4_xx_xx.stl is one sixteenth of the board.
square.stl contains a single square, you will need 64 of these.

I tried first to use "chess_2_2_XX" but there was too much wrapping so I ended using "XX.chess_4x4_xx_xx".

Yu may see the final result in the video https://github.com/rmarabini/chess/wiki/Videos/chess.mp4