This week, I spent my time researching which LEDs to use. For our project, we only need 64 LEDs, one for each square of the 8×8 chessboard. There are two main requirements for our LEDs. The LEDs should be individually programmable to correctly display the AI’s move. Another requirement is that they should be able to transmit more than one color in order to deal with the ambiguity of castling, where four squares are lit up instead of two. We are going with WS2812B, which is the cheapest and most common LED strip that satisfies our needs.