- Each chess piece needs a neodymium magnet attached to the base
- A grid of 64 reed swithes and diodes to localize chess pieces
- 2 stepper motors and 1 servo motor for the 2-axis robotic arm and its magnetic head
- Two Arduino boards are required due to limited GPIO pins
- Arduino Mega (sensor reading processing and main control)
- Arduino Uno (motor control)
- 2 seven-segment displays and 1 LCD for the chess clock
- Sjeng chess engine on an external PC to output AI moves and report invalid moves
- Chess clock can respond to sensors and automatically switch side
- Moves, captures, castling, and pawn promotions are smartly detected and displayed on the LCD
- Invalid moves can be corrected by a human player
- Difficulty level and game mode can be adjusted in the Chess Helper app (macOS)
- human vs human
- human vs AI (human white)
- AI vs human (AI white)
- AI vs AI
