Knight Light. LED Chess. Nick DeSantis Alex Haas Bryan Salicco. Senior Design Group 16 Spring 2013

Transcription

1 Knight Light LED Chess Nick DeSantis Alex Haas Bryan Salicco Senior Design Group 16 Spring 2013

2 Motivation Chess is a tricky game to learn. Video games have taken over and kids don't learn about classic games like Chess. Rehashed visuals bring interest back to old products/ideas (ask Disney).

3 Chess with Friends ios app by Zynga.

4 Goals and Objectives Accurate tracking of piece locations. Lighting of possible moves. Recognize invalid moves. Detect piece movement. Two player game mode.

5 Specifications 8x8 grid of 64 tiles (12" x 12") Acrylic housing (17" x 13" x 2.5") Each tile contains: one RGB LED one optical detector / photosensor

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7 Overall Block Diagram IR Sensors Power I/O Expanders MCU LED Matrix

8 Microcontroller Selection SPECS LPC2148 Atmega128 Flash 512kb 128kb Max Op Frequency 60MHz 12MHz CPU 32bit 8bit GPIO I2C Serial Interfaces kb + 8kb USB 4kb 2 1 $15.00 $ $15.00 RAM SPI COST

9 LED/Sensor Subsystem MCP23017 IR Sensors QRD1114 I/O Expanders LED Matrix Common Cathode RGB LEDs

10 Placement Sensing QRD1114 Optical Detector / Phototransistor Emits an infrared signal and measures the reflectance. Pull-up resistor sets the amount of reflectance that will trigger a high signal. Capacitor and 220 Resistor are not necessary.

11 LED Display RGB LEDs will be placed on each spot on the game board. Common Cathode allows fourth pin to go to ground. Colors can be used to signify different events. Input current <= 20 ma will extend life.

12 I/O Expanders MCP GPIO pins Works on high speed I2C bus 3 Hardware address pins allow up to 8 devices on the bus

13 I2C Communication Two wire interface Message format is dependant on the device Analyze with an oscilloscope to check values

14 MCP23017 and I2C Transmit: Start, Address+Write, Register, Data, Stop Read: Start, Address+Write, Register, Restart, Address+Read, Stop

15 LED/Sensor Configuration 4 LEDs X 3 Pins = 12, 4 Sensors X 1 Pin = = 16 Pins... Same as our expander!

16 Initial PCB Plan Expander Board MCU Board Vector Board Expander Board

17 Second PCB Plan I/O Boards MCU Board

18 Final PCB Plan Vector Board PCB 12" x 12" Development Board

19 MCU Board Initially planned to design the MCU board from scratch. Due to the size of the PCB we decided to use the LPC2148 development board.

20 MCU Board Headers are arranged to to provide power and data from the LPC2148 to the components on other boards. I/O boards need power, clock, and data

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22 Software All game logic must be programmed Standard piece movements Special moves (Future Addition) Endgame scenarios (Future Addition) The C Programming Language Functions to execute algorithms Arrays to store piece positions Memory to track positions and state, allowing the hardware to be more simple

23 Pawns Black Arrow: standard movement, forward one tile. Green Arrow: option on piece move, forward two tiles. Red Arrow: attack diagonally only.

24 Knights Two tiles horizontally, one tile vertically. or One tile horizontally, two tiles vertically. Leap!

25 Rooks Horizontally any number of tiles. or Vertically any number of tiles.

26 Bishops Any diagonal direction any number of tiles.

27 Queens Any diagonal, horizontal, or vertical direction. Any number of tiles.

28 Kings Any diagonal, horizontal, or vertical direction. Only one tile.

29 Illuminating Tiles Not Awesome Awesome

30 Software Gameplay lines of code represented in 8... while (!gameover) { scan(); // listening for lift determinepossiblemoves(); illuminateleds(); scan(); // listening for drop or attack updatepositions(); turnoffleds(); }

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32 Modified Budget Component Quantity Price Purchased LPC $15.00 Y RGB LED (25 pk) 3 $19.95 Y LCD Monitor 1 $14.00 Y Button 3 $2.00 Y MCP $2.00 Y QRD $1.00 Y JTAG Programmer 1 $51.95 Y USB Cable 2 $4.00 Y Power Regulator 2 $1.95 N

33 Modified Budget (cont) Component Quantity Price Purchased Development Board 1 $40.00 Y Chess Pieces 1 $10.00 Y Resistors/Caps/etc xx $30.00 Y PCB Orders $300 Y xx Total = $ Up from originally planned $470.00

34 Progress 0% 50% 100% Research 100% Parts Testing 100% Hardware Prototype 100% Hardware Assembly 100% Parts Ordered 100% Software Pseudo Code 100% Software Coding 100%

35 Future Modifications LCD Screen Special game conditions Buttons for game mode and power A.I. for single player mode

36 LCD Screen Display to the user... Incorrect move Time of game Game mode Player's turn Game status

37 Special Conditions Chess has special rules in the game that otherwise follow no traditional pattern. Castling En Passant Pawn Promotion Endgame Scenarios

38 Artificial Intelligence Chess piece relative values Standard valuations Weighted moves Piece Point Value Pawn 1 Knight 3 Bishop 3 Rook 5 Queen 9

39 Thanks!... any questions?