Automatic Doggy Door

Group #34Final Design ReportMechatronics (MECH 307)Submitted Dec. 7, 2007

Nick Echter, Markus Lutz, Jon Forster, Jeff Belval

Photographs and Figures of Final Design

Total Assembly

user interface with keypad, speaker, and LCD

food outlet water dispenser and floatvalve assembly

doggy door and exposed floor switch

Front View Back View

Fig. 1 Fig. 2

food dispensingsystem with fooddispenser andstepper motor

IR receiver hood

door motor/counter weight system

watering system with reservoirand solenoid valve

on/off solenoid valve switch

Food and Water Outlets(At the Front of the Assembly)

Fig. 3

Fig. 4

Food Outlet water line from reservoirFloat switch housing (float switch is located within)

Float switch

Fig. 5

Detailed View of Insides

12 V DC door motorwater reservoir

solenoid valve

Power supply for motor, valve and circuitry

counter weight and guiding track

housing for relay switch

on/off solenoidswitch

back of user interface

main PIC

sound chip

stepper motor

food dispenser

potentiometer

voltage regulator

voltage regulator

EDE 702

Stepper motorchip

Fig. 6 Fig. 7

Close Up View of Circuit Housing

Fig. 8

main PIC

EDE 702

sound chip

stepper motor

Stepper motor chip

voltage regulator

push buttonactivator for sound recorder

potentiometer

microphone for sound recorder

sound projector

LCDLED

IR Sensor and Motor Control System

infrared sensors mounted above glass(viewed from below)

LMD 18200 H bridge

Motor control PIC with inputs from the top, step, and floor switches; and IR sensors

infrared sensors

infrared output LED’s worn on dog collar

top view

Fig. 9

Fig. 10

Fig. 11

Food Dispenser

Fig. 12 Fig. 13

Fig. 14

valve rotated by stepper motor Pushes the food out the bottom hole

total assembly

funnel guides food into valvehousing

floor switch

top switch

step switch

Door Motor Control Switches

Face Plate

speaker

keypad

LCD

Potentiometer(for display contrast)

recording activator switch

sound inputLED

Fig. 15

Fig. 16

Fig. 18 Fig. 17