Transcript Presentation

Project #1
Smart Sprinkler Robot
System
Introduction
Features
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Weather Forecasting
Soil Moisture
Wireless Communication
GPS
Base Station
Hose Actuator
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Controls Water Flow
Hose Actuator Circuit
JTV-100 Hose Actuator
Power Electronics
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5V LDO (Low-Dropout
Regulator)
Regulates Battery
Powers Transmitter and
Receiver
Microcontroller
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Arduino Mega 2560
Communicates with Robot Sprinkler
Controls Sprinkler
Arduino Mega 2560
Internet
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Arduino Ethernet
Gathers Weather Forecast
National Weather Service
Arduino Ethernet
Wireless Communication
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RXM-900-HP3 Receiver
TXM-900-HP3 Transmitter
Serial Communication
Multiple Channels
Wireless Communication System
Transmitting at 906.28 MHZ
Wireless Communication Circuit
Robot Communication
GPS
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Provides Robot
Location
Navigation
Sparkfun Venus GPS
Robot Power
Batteries
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Car Battery Powers
Motors
Small Battery
Powers Circuits
Car Battery
Small Battery
Power Electronics
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3.3 and 5V LDO (Low-Dropout Regulator)
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Regulates Battery Supply
Transmitter, Receiver, GPS, and Arduino
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Gate Drivers
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LT1160 Power MOSFET Driver
IRF530N Power MOSFETS
Short circuit protection
PWM (Pulse Width Modulation)
H-Bridge Diagram
Gate Driver Circuit Protection
Example
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Duty Cycle : 25%
Frequency : 32 kHz
Input Voltage : 5V
Output Voltage : 12V
H-Bridge Circuit
Robot Motors
Microcontroller
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Arduino Mega 2560
Controls Sprinkler Robot
Records Soil Resistance
Navigation
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GPS location
Navigation
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Drive
Forward
GPS location
Navigation
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Calculates
Angle to
Destination
Rotate
Navigation
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Drive to
Destination
Repeat
Drive Motors
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Moves the
Robot
Failed
Verification
1LPV6V Motors
Soil Probe Motors
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Insert/Remove Probe
Potentiometer Safety
Soil Probe
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Measures Soil
Resistance
Voltage Divider Rule
Challenges
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Wireless Communication Antennas
Mechanical Issues
Battery Voltage Spikes
Thank You
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Professor P. Scott Carney
TA Mustafa Mukadam
ECE Machine Shop
ECE Electronic Shop
MIT Lincoln Lab
Questions?
I Have
Many!!