Watch Your Back!
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Watch Your Back!Watch Your Back!
Team BAKEBryan SchoenAshish BablaniKelby PenneyEvan Schurr
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Overview of PresentationOverview of Presentation
1. Project Description 1. Project Description
2. Project Design2. Project Design
3. Proposed Additional Features3. Proposed Additional Features
4. Timeline / Labor Distribution4. Timeline / Labor Distribution
5. Cost / Risk5. Cost / Risk
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Introduction and PurposeIntroduction 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
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ObjectivesObjectives
• 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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DescriptionDescription
• 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 AspectsMechanical 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 TriggerDC 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 DrivesPWM 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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M68HC11K1MicrocontrollerM68HC11K1
Microcontroller• 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 microcontroller’s peripheral functions can be configured as general-purpose I/O lines
M68HC11K 84-Pin PLCCC
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MemoryMemory
• RAM– 64 Mb SDRAM
• ROM– 64 Mb
• 44 Pin - CPLD– Used to store data
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Wireless, Camera & ControllerWireless, 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 FeaturesMandatory/Extra Features
Mandatory Features• 360 degree horizontal movement• Vertical movement of gun• Trigger control• Integrated wireless control & video
Extra Features• Valentine’s Day Massacre (VDM) button• Audio output• Various sensors (wall, drop-off, etc.)
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Possible Problems & RisksPossible 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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Motorola68HC11K1
Micro-Processor
SerialRS-232 Paintball gun
- trigger
Ram
Rom
DC Motor Drivers
44 pinCPLD
1 StepperMotor2 DC Servo Disc Motors
WirelessWeb-Cam
Computer
Hardware ImplementationHardware Implementation
Control signal
Wireless transmission Driver for
trigger
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Estimated CostsEstimated CostsPrice # 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 DistributionWork Distribution
AshishAshish Kelby / EvanKelby / Evan BrianBrian
•Documentation •Documentation •Documentation
•Programming the HC11K1 to control the DC motor drivers
•Designing and implementing DC/DC motor drivers
•Setting up the web cam•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 ChartGantt Chart
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ReferencesReferences
• "Freescale Semiconductor." M68HC11K Family Technical Data HCMOS M68HC11K Family. 2001. Motorola, Inc.. 12 Sep 2006 <http://www.freescale.com/files/microcontrollers/doc/data_sheet/M68HC11K.pdf>.
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Questions? / Comments ?Questions? / Comments ?