But the automated chessboard does not need the same accuracy than a 3D printer. The Core XY requires more attention, the belts arrangement is more complex and there are more pulleys to align. Thus, the horizontal beam is more compact and allow to have a bigger working envelope. The main advantage of the Core XY concept compared to cartesian kinematics is to avoid having a motor on board the trolley beam. Two motors with two belts are used to move the trolley following the X and Y axes. The trolley motorization is based on the Core XY concept. Turning the eccentric spacers increases or decreases the gap and will give the best compromise between the guiding and the sliding. Eccentric spacers are used to set the good gap adjustment between the wheels and the beams. It is impossible to obtain the good contact force only from construction, so a set up system shall be implemented. If the gap is too tight, the sliding will be difficult and if it is too slack, the guiding will be not accurate. The main advantage of these beams is to combine two functionalities, provide rigid supports for the frame structure and linear rails for the guiding of the wheels.įor the X displacement, the guiding is performed by means of 4 wheels, two at each extremity of the lateral beams.įor the Y displacement, the guiding is performed by means of 4 wheels as well, two on each side of the trolley beam.įor a proper functioning of the sliding, the contact force or gap between the wheels and the beams is essential. The beam is acting like a linear rail when the wheel is seated into the V groove. The V-slot design uses standard aluminum profile with a V machining at the central grooves, to allow the centering of a specific wheels. The guiding of the linear slides is based on the V-slot concept. The main functionalities of the linear slides (guiding and moving) are inspired by the 3D printer universe.
The XY table is composed of two motorized linear slides, one for the X axis motion and one for the Y axis motion. The XY table performs the displacements of the electromagnetic trolley (described on the next step).
DIAGRAM CHESS PIECES MOVES DRIVER
2 x Stepper Motor Driver Carrier - Pololu - A4988.2 x Stepper Motor - Adafruit - Nema 17 size - 200 steps/rev, 12V 350mA.1 x V slot 20x20 linear rail, Length = 395 mm.
1 x V slot 20x20 linear rail, Length = 350 mm.1 x V slot 20x20 linear rail, Length = 315 mm.2 x V slot 20x20 linear rail, Length = 345 mm.Overall dimensions : 460mm x 460mm x 100mm.LCD screen and arcade buttons are added to interact with the players (select the game modes, timer control, inform about the events…) When the electromagnet is below the chess piece a magnetic contact can be generated through the chessboard, so that the chess piece follows the trolley when it moves.
The chessboard is placed above the XY table and the chess pieces are equipped with magnets. The automated chess board is composed of an XY table with an electromagnet on the moving trolley. The computer player chess pieces have a phantom displacement thanks to a hidden moving mechanism. The second one, Human vs Computer, with an automatic chess pieces movement for the computer player. The first one, Human vs Human, with a control of the chess pieces displacements. So, this Instructable describes an automated chessboard with two game modes. I took time to learn about AI, game engine, chess pieces detection to finally design my own chess game. I started to look into the electronic chess games, but I rapidly realize that the best choice was to do it by myself. But I was frustrated to pass all this time behind a screen. I like playing chess game and up to now I played a lot on the Internet or with different Apps.
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