I’m currently building a smart chessboard. When a move is played on the board, it is detected from underneath using magnets. Stockfish then calculates and plays its move (depending on the selected difficulty level). An XY pulley system beneath the board moves the pieces using a magnetic mechanism.
I have already designed the PCB and placed an order with PCBWay to manufacture it. The minimum order quantity is five PCBs, for a total cost of $200.
If anyone is interested in contributing in exchange for one of the PCBs, please feel free to send me a private message.