Automatic Pet Feeder

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Automatic Pet Feeder

• Robert Fleming
• Vishak Ganesh
• Vu Tang
• Viet Nguyen
• Kevin Clark

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• Modified automatic pet feeder
• Wireless beacon on a pet collar

http//www.terrificpets.com/pet_supplies/dog/bowls
-feeders/auto-feeders/14429.asp http//www.dobiede
tectives.com/dogtraproducts.html
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Project Overview

• Product regulates feeding amount for pets
• Animal controls its feeding cycle
• Food is kept fresh
• Modification is from an existing design
• Product Components

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Background

• Similar products on market
• Improved existing design

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Design Approach
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Design Approach
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Interconnects

ID From To Description
C1 Transmitter Antenna, Pin 24 of U1 Receiver Antenna, Pin 28 of U3 418 MHz Radio Signal
C2 Valid Transmission, Pin 11 of U3 Input, Pin 3 of U4 Detection of Collar Beacon
C3 Pin 5 of U4 Pin 2 of U6 Control Signal _at_ 3V
C4 Relay Electric Motor Closed Circuit Driving AC Motor Inside Pet Feeder
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Tradeoffs and Design Considerations
Specifications Planned Achieved
     
Battery Small cell battery 3V Coin Cell, 300-400mAh typical
Transmitter Current Draw (On) TBD 1mA
Unique Identifier 16 or 32 bit 10 digit binary
Effective Range 3-6 feet 3-6 feet, adjustable
Feed Rate   .5 oz/20 seconds
Motor Power   6 Watt
Battery Life 6 Months 100 Hours per Cell
Food Capacity TBD 5 Lbs
Transmitter Ping Time lt 2 minutes 10 seconds
Transmitter Weight lt 6 ounces TBD
Feeder Mechanism TBD Powered Auger feeder
Timer Minute Accuracy Original Timer Abandoned
Communication TBD EM Spectrum 418 Mhz Radio
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Alternatives

• RFID
• IR
• Cypress
• Antenna
• Radio Modem

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TXE/RXD 418-KH2
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Marketing Cost Analysis

• Existing timer based products have limited
  features
• Ergo AutoPetFeeder (right) (108)
• Le Bistro Feeder (left) (80)

• Additional and beneficial features exist with
  our product

http//www.thepetstoreonline.com/ergo-automatic-p
et-cat-dog-feeder-waterer.html http//www.petsmart
.com/product/index.jsp?productId2751238
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Prototype Costs
Item Qty Cost Total
Dog Feeder 1 100 100
Microcontroller 1 15 15
Relay 1 2 2
Batteries 10 0.5 5
Transmitter 1 10 10
Receiver 1 16 16
Power Supply 1 10 10


Misc Parts  20 32
       
    Total 190
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Production Costs

Development Costs 62,149

Based on 1,500,000 units

Parts Cost 50
Assembly Labor 6
Testing Labor 3
Production Costs 144
Profit 21 12.40
Selling Price 165

Total Revenue 247,500,000
Total Profit 30,781,601
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Future Work

• Battery Life
• Auger speed
• Packaging

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• More than 140 million dogs and cats in the United
  States- every one of them eats!