ECEN 4610 Capstone LaboratorySpring 2010PokerTech

Erik Morrisey | Electrical EngineeringChris Weigel | Electrical EngineeringHo 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 text RFID 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

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