Automatic Pet Feeder

Robert FlemingVishak Ganesh

Vu TangViet NguyenKevin Clark

Modified automatic pet feeder

Wireless beacon on a pet collar

http://www.terrificpets.com/pet_supplies/dog/bowls-feeders/auto-feeders/14429.asphttp://www.dobiedetectives.com/dogtraproducts.html

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

Background• Similar products on market

• Improved existing design

Design Approach

Design Approach

ID From To DescriptionC1 Transmitter Antenna, Pin 24 of U1 Receiver Antenna, Pin 28 of U3 418 MHz Radio SignalC2 Valid Transmission, Pin 11 of U3 Input, Pin 3 of U4 Detection of Collar BeaconC3 Pin 5 of U4 Pin 2 of U6 Control Signal @ 3VC4 Relay Electric Motor Closed Circuit Driving AC Motor Inside Pet Feeder

Interconnects

Tradeoffs and Design ConsiderationsSpecifications Planned Achieved     Battery Small cell battery 3V Coin Cell, 300-400mAh typicalTransmitter Current Draw (On) TBD ~1mAUnique Identifier 16 or 32 bit 10 digit binaryEffective Range 3-6 feet 3-6 feet, adjustableFeed Rate   .5 oz/20 secondsMotor Power   6 WattBattery Life 6 Months 100 Hours per CellFood Capacity TBD 5 LbsTransmitter Ping Time < 2 minutes ~10 secondsTransmitter Weight < 6 ounces TBDFeeder Mechanism TBD Powered Auger feederTimer Minute Accuracy Original Timer AbandonedCommunication TBD EM Spectrum 418 Mhz Radio

AlternativesRFID

IR

Cypress

Antenna

Radio Modem

TXE/RXD 418-KH2

Marketing & Cost Analysis

• Existing timer based products have limited features:

• Ergo AutoPetFeeder (right) – ($108)

• Le Bistro Feeder (left) – ($80)

http://www.thepetstoreonline.com/ergo-automatic-pet-cat-dog-feeder-waterer.htmlhttp://www.petsmart.com/product/index.jsp?productId=2751238

• Additional and beneficial features exist with our product

Prototype CostsItem Qty Cost Total

Dog Feeder 1 $100 $100Microcontroller 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

Production CostsDevelopment Costs $62,149

Based on: 1,500,000units

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

Total Revenue $247,500,000 Total Profit $30,781,601

Future Work

Battery Life Auger speed

Packaging

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