ECEN 4610 Capstone Laboratory Spring 2010 PokerTech Erik Morrisey | Electrical Engineering Chris Weigel | Electrical Engineering Ho Yun Chan | Electrical Engineering Critical Design Review

Objective As our Capstone project we hope to create an integrated Texas Hold’em poker table. A poker table with enough intelligence to monitor the game being played and provide information and feedback to the players and dealer. Our project will incorporate remote recognition of the cards using RFID along with a user interface LCD system.

Implementation RFID tags attached to cards coupled with a number of RFID pads integrated into the table in the relevant locations. LCD screen at each player to display chip amount left, current bet, and current bet. Using the keypad players can call, fold, or raise various amounts.

LCD User Interface Crystalfontz CFA632 serial LCD 16x2 16x2 yellow/green with backlight display Integrated LED 6-button keypad RS-232 interface

LCD Specifications Nominal Supply Voltages: Supply voltage for driving the LCD module (5.0V) Supply voltage for backlights (12V) Supply voltage to run fans (12V) Typical Current Consumption: +5 V for logic LCD + microcontroller (13mA) +12 V for backlight at 100% (45mA) +12 V for fans (varies)

Powering the LCD +5 V and +12 V power can be supplied through RS-232 This allows for a single cable to contain both power and data connections. It’s default RS-232 pin assignments are all on a single column of pins which allows connection through a.1’’ spacing 5-conductor cable +12 V fan power must still be run through the PWR connector due to current restriction.

Trossen Robotics RFID Tags Proximity passive transponder Ideal for identification applications Adhesive side allows for tags to be easily attached to cards. Thin and fits nicely.

Innovations RFID Reader ID-12 Simple RFID reader module with built in antenna. Obtain a serial string output containing the unique ID of the tag embedded in the card. Only has a 100 mm read range so it should not intercept other players’ cards.

Intronix Logic Analyzer Reading start of textRFID tag data end of text line feed carriage return exclusive or

Computer Interface Provide players with hand history and video feed. Post-game information allows players to pick up on poker “tells” for future reference. – Length of pauses while contemplating bets – Facial expressions Provide audience with current hands being played. Potentially could be broadcasted via internet for others to watch.

Main Software Loop

Betting Cycle

System Architecture

MSP430F2470 Takes care of all connection needs. 2 UART’S for serial connection for LCD screen/keypad and RFID scanners to local processor. Also has a I2C for connection with the central processor.

Budget ItemVendorNumber of UnitsCost per UnitSub Total RFID Reader ID-12SparkFun Electronics6$29.95$ RFID IC Square Tags 125 kHz (2 1/8 x 3 3/8) Trossen Robotics60$1.05$70.98 RFID Breakout BoardSparkFun Electronics6$0.95$7.70 RS-232 Serial Ports 12$3.50$42.00 RS-232 Cablesamazon.com6$6.09$36.54 Microcontroller (MSP430)Texas Instruments4$5.00$20 Deck of CardsChris' Gracious Family3Free (Donated)$0 Vegas Style Poker TableCraig's List1$50.00$50 CameraLogitech1$50-$100$100 LCDCrystalfontz3$50.00$ Power Supply 1$ Printed Circuit Board Fabrication 4$50.00$ User/Technical Manual Printing and Binding Kinko's1$50.00 PosterITLL1$10.00 Poker Chips1$30.00$30 LEDsSparkFun Electronics300$0.35$ Total$1,018.92

Division of Labor

Schedule

Critical Points Critical Design Review (CDR) – Components selected, RFIDs on Cards, at least 1 pad functioning, processor selected, basic circuit design Milestone 1 – Processors on board and functioning, PCBs designed, code written, LCD interface functioning Milestone 2 – User Interface fully functional (display, camera), PCBs printed and populated, poker table modified with pads and LCD’s Capstone Design Expo – Final User Manual, Poster

Risks If it doesn’t work!

Questions