Robot pac man

PAC-MAN
EECE 474 – Team 1 July 24, 2002

PAC-MAN

Submitted to: Dr. W.G. Dunford July 24, 2002

Submitted by: Pauline Pham (#44064988) Carol Tai (#78264991) Johnson Bao (#64704984) Christopher Chou (#82812991) Jimmy Huang (#4798998)

Table of Contents
List of Tables.................................................................................................................... iii List of Figures................................................................................................................... iii Abstract............................................................................................................................. iii 1.0 Introduction........................................................................................................... 1 2.0 Chassis.................................................................................................................... 2 2.1 Motor Mounts.............................................................................................. 2 2.2 PCB Mounts ................................................................................................ 3 2.3 Body............................................................................................................ 3 3.0 Motors .................................................................................................................... 6 3.1 Motor Selection ........................................................................................... 6 3.2 MotorControl.............................................................................................. 7 4.0 Radio Frequency Application .............................................................................. 9 4.1 RF Considerations................................................................................................. 9 4.2 Wireless Input Controller............................................................................ 9 4.2.1 Encoding scheme logic.................................................................. 10 4.2.2 Encoder and Decoder .................................................................... 11 4.2.2.1 Error detection and filtering .......................................... 12 4.2.3 RF Modules ...................................................................................13 5.0 Sensors.................................................................................................................. 16 5.1 Wall detection ........................................................................................... 16 5.2 Dot Counting Sensor ................................................................................. 18 5.3 Pac-Man Tracking..................................................................................... 19 5.4 Contact Sensor........................................................................................... 21 5.5 LCD display .............................................................................................. 21 6.0 Microcontroller andSoftware............................................................................ 23 6.1 Pac-Man Robot.......................................................................................... 23 6.1.1 Obstacle Sensors ........................................................................... 25 6.1.2 LCD Display ................................................................................. 26 6.1.3 RFReceiver................................................................................... 26 6.1.4........................................................................................................... 27 Stepper Motors .......................................................................................... 27 6.1.5 Ghost Contact Sensor .................................................................... 29 6.1.6 Maze Dot Sensor...