The M.A.D.D. Mallard

1
The M.A.D.D. Mallard

• Mid-Term Presentation
• February 26th, 2003

2
Design Team

• Project Advisor
• Dr. John P. Donohoe, P.E.
• Team Leader
• Channing Hodges, E.E.
• Team Members
• Chadrick Mason, E.E.
• Trent Lee, E.E.
• Bledar Andoni, E.E.

3
Problem

• Standard duck decoys are motionless
• Spinning-wing models have motion, but are
  stationary and expensive
• Shaker models create ripples that enhance entire
  spread, but have no movement
• No remote control capability

4
Solution

• Design autonomous duck decoy that simulates
  swimming of actual duck
• Include functionality of Shaker decoy
• Implement remote control capability
• Design product to withstand normal hunting
  conditions

5
Design Constraints

• FCC-Compliant operation in the 27MHz 75MHz RF
  Systems
• Hands free operation
• 6-8 hours of battery life
• Location tracking to maintain a 20 foot operating
  radius
• 75 foot remote control operating range
• Water-resistant packaging
• Final retail price approximately 225

6
Typical Use Scenario
20 feet
TX
Decoy
Hunter In Blind
7
Hardware Block Diagram
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Remote Control

• Possible user selections Sleep/Power off, 3
  different modes of operation
• FCC-Compliant RF Operation within 75.4 76 MHz
  Frequencies
• Operation Range 75 feet
• Powered by 4 AA Batteries

9
Transmitter Decoy

• Standard size water-keel decoy 15 L x 6 W
• Can be string-weighted or pole-mounted
• Powered by 8 AA batteries
• Transmits a continuous signal
• FCC-Compliant RF Operation within 26.96 27.28
  MHz Frequencies

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Elsema FMT-212 Transmitter

• Continuous Transmitting Capability
• Operating Voltage 12V
• Operating Current 500mA
• Transmitting Frequency 27.145 MHz
• Dimensions 140 X 60 X 34 mm
• Weight 225 grams

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M.A.D.D. Mallard Mechanical Decoy

• Magnum size water-keel decoy 18 L x 7 W
• Larger size allows room for hardware inside
• Powered by a 9.6V Rechargeable Battery
• Weight 6 pounds
• Water resistant

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M.A.D.D. Mallard Input Hardware
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Elsema FM-212T Receiver

• Reads in location signal from transmitter decoy
• Matched Receiver to FMT-212
• Operating Voltage 12V
• Operating Current 44mA
• Receiving Frequency 27.145 MHz
• Dimensions 96 X 70 X 20 mm
• Weight 67 grams

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PIC17C44 Microcontroller

• Monitors Signal Strength
• Performs Random Routes
• Controls Motors and Rudder
• Operating Voltage 5V
• 8K EPROM Program Memory
• 454 bytes DATA Memory
• 40-pin DIP Package

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Possible Modes Of Operation

• 3 possible user-selected modes
• Self-propelled
• Shaker
• Combination of the two
• Only selectable via remote control
• Mechanical decoy will operate in self-propelled
  mode if remote control is not present

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Self-Propelled Mode Flowchart
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C.R.O.S.S. Correction Module

• C.R.O.S.S. will Control the Radius of Operation
  via Signal Strength by performing the necessary
  propulsion methods in order to maintain the 20
  foot operating radius

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20 feet
TX
Decoy
Hunter In Blind
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Shaker Mode

• User-selectable Mode
• Implemented using 5V DC Motor

20
Combination Mode

• User-selectable Mode
• Combination of Self-Propelled and Shaker Mode
• Alternates in 30 second intervals

21
Questions ?