Watch Your Back!

1
Watch Your Back!

• Team BAKE
• Bryan Schoen
• Ashish Bablani
• Kelby Penney
• Evan Schurr

2
Overview of Presentation
1. Project Description
2. Project Design
3. Proposed Additional Features
4. Timeline / Labor Distribution
5. Cost / Risk
3
Introduction and Purpose

• Watch Your Back! is a wirelessly controlled
  amphibious vehicle armed with a camera with
  abilities to perform a wide variety of human
  tasks
• Ability to transport items from one room to
  another
• Can be used to enter hazardous situations,
  analyze the situation and risks, and perform
  necessary actions
• Eliminates threats to human lives in a
  battlefield when equipped with a gun
• Home/Business Security
• Recreational

4
Objectives

• Eliminate threats to human life
• Will equip the amphibious vehicle with a
  paintball gun and camera
• Will be able to control from a remote location
• Have ability to maneuver and fire from remote
  location
• View all data and react in real time

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Description

• Wireless amphibious vehicle equipped with a
  camera and paintball gun
• Sensors may include motion, video, audio and
  light
• Vehicle can be controlled by 802.11B
  communication
• The data will be transferred back wirelessly to a
  computer with a controller (keyboard or PS2
  controller)
• Data can be viewed and controlled in real time by
  a user interface

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Mechanical Aspects

• Pre-assembled Metal Mobile Platform
• Two 8 Inch Wheels
• Two 2 Inch Stabilizing Wheels
• Vertical motion Gear

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DC Motors/Gun Trigger

• Two 9FGHD Ferrite Series ServoDisc Motors
• 0.9 Deg/Step Stepper Motor
• Push Type Tubular Solenoid

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PWM Controlled Motor Drives

• Two DC/DC Converters with PWM Input
• Input Voltage 12V
• Output Voltage 0-15 V
• Inverter Switch for Reverse Control

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M68HC11K1Microcontroller

• 4 MHz Clock
• 16-bit addressing
• 84-pin PLCC Package
• Four 8-bit pulse-width modulation (PWM) outputs
• Enhanced asynchronous serial communications
  interface (SCI)
• Dual-function I/O lines Any pins used for the
  microcontrollers peripheral functions can be
  configured as general-purpose I/O lines

M68HC11K 84-Pin PLCCC
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Memory

• RAM
• 64 Mb SDRAM
• ROM
• 64 Mb
• 44 Pin - CPLD
• Used to store data

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Wireless, Camera Controller

• 802.11g wireless control
• VGA (640x480) quality wireless camera with
  integrated audio
• Sony Playstation controller for
  horizontal/vertical movement and trigger controls

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Mandatory/Extra Features

• Mandatory Features
• 360 degree horizontal movement
• Vertical movement of gun
• Trigger control
• Integrated wireless control video
• Extra Features
• Valentines Day Massacre (VDM) button
• Audio output
• Various sensors (wall, drop-off, etc.)

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Possible Problems Risks

• TIMING!
• Recoil of gun stability
• Weight/friction current limiting the DC motors
• Smooth rotational movement of the motors
• Exceeding the motor specifications

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Hardware Implementation
Wireless Web-Cam
44 pin CPLD
Control signal
Motorola 68HC11K1 Micro-Processor
Serial RS-232
Paintball gun - trigger
Wireless transmission
Driver for trigger
Rom
DC Motor Drivers
Ram
1 Stepper Motor
2 DC Servo Disc Motors
Computer
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Estimated Costs
Price Units Total
9FGHD Ferrite Series Servo Disc Motor (x2) 704.00 2 1,408.00
68HC11K1 Microcontroller (x2) 20.00 2 40.00
12V Car Battery 100.00 1 100.00
LinkSys PTZ Internet Camera 255.00 1 255.00
Paintball Gun 200.00 1 200.00
Misc (Resistors, Caps, Inductors, Inductor cores, heat sinks, etc) 100.00 1 100.00
Stepper Motor 140.00 1 140.00
PS2 Controller 20.00 1 20.00
Gear System Parts 50.00 1 50.00
RAM and ROM 100.00 1 100.00
Gun supplies (Ammo, CO2, etc) 50 1 50.00
Total 2,463.00
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Work Distribution
Brian
Ashish
Kelby / Evan

• Documentation

• Documentation

• Documentation

• Setting up the web cam

• Programming the HC11K1 to control the DC motor
  drivers

• Designing and implementing DC/DC motor drivers

• Programming the HC11K1 to control the DC motor
  drivers

• Designing and implementing stepper motor drivers

• Designing and implementing trigger driver for
  paintball gun

• Designing and implementing trigger driver for
  paintball gun

• Designing a gear system for the stepper motor

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Gantt Chart
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References

• "Freescale Semiconductor." M68HC11K Family
  Technical Data HCMOS M68HC11K Family. 2001.
  Motorola, Inc.. 12 Sep 2006 lthttp//www.freescale.
  com/files/microcontrollers/doc/data_sheet/M68HC11K
  .pdfgt.

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Questions? / Comments ?