Preliminary Design Review “Dayrider”
Team Dayrider
George Jenny, Amjad Sawaged,
Tim Ikenouye, Kieran Tie
Purpose
 To build a multi-use platform for a wide
range of mobile remote applications
 To demonstrate the feasibility of a design
concept
 To educate about new technologies and
applications involving alternative power
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Objectives
 Use solar panels and power regeneration methods
to create a self-sustaining system
 Use a router to create a web-page based control and
monitoring of the system
 To harvest enough excess, ambient energy to power
peripheral devices (expandability)
 Demonstrate concept on RC vehicle
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Project Goals
 Minimum: A solar-powered, routercontrolled RC vehicle.
 Target: A self-controlled software-sensor
interface with hybrid/regenerative
techniques for energy recapture and reuse.
 Optimal: A system that consumes less
energy than it is able to harvest, using a
variety of energy recapture techniques.
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System Overview/Architecture
Battery
Capacitors Solar Cells Battery
Router
Microcontroller
Wind
Speed
Range
Sensors
Photo
Detectors
Power
Monitor
Speed
Sensor
Temp.
Sensor
Motor
Control
Motor /
Battery
PC
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Power Generation / Storage
Solar Array
Router Battery
Rechargeable Battery
Electric Motor
Peripheral Devices
Router
Magnetic Braking
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Body-Wrapped Supply
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Electric Motor with Clutch
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Microcontroller - MSP430
 Sensor interfacing/processing
 Speed and temperature sensors
 Optical navigation
 Motor control
 Communication to Router via
I2C or Serial for wireless data
transfer
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Microcontroller - Control Software

CDK4MSP -- MSP430 Cross Development Kit
 Assembler, Disassembler, Object File Operator
 Compiler, Interpreter
 Debugger, Simulator, Emulator
 Libraries, Operating Systems
 In System Programming (ISP)
 JTAG programming
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Router/PC Interface
 Linksys WRT54G
 Custom Linux install OpenWRT
 Acts as web server
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
 PC interfaces with
peripherals through
serial and
microcontroller
 Separate system to main
vehicle - modular
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Router - Wireless
 Uses 802.11g wireless
standard
 Range of up to 100ft
indoors, 300-500ft
outdoors
 Can connect with any
802.11b/g enabled
device - e.g. laptop,
PDA, PSP, etc…
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Router - Software
 Control through web page
 Allows for control by any wireless-enabled
device - no additional software needed
 Web interface sends inputs through custom
software to microcontroller through serial
 Can also receive inputs from microcontroller
and display data on screen
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Router - Modifications
 Serial ports
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
 Interface to
microcontroller
 SD memory card
 Additional memory
for operating system
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
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 Etc…
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Peripherals / Sensors
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

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Range sensors
Wind speed sensors
Speed sensors
Temperature sensors
Optical sensors
Motor controller
Power management controller
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Schedule
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Division of Labor
 Wireless communication (router/PC interface) - Kieran
 Power (Re)Generation and storage - George and Amjad
 Peripheral devices - Amjad and Tim
 Programming (microcontroller & router) - Amjad & Tim / Kieran
 Vehicle Construction/Control - George and Tim
 PCB Layout/Design - All
 Quality Control - All
 Budgeting/Materials - All
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Risks / Contingency Plan
 Cannot generate enough power
 Use battery power/alternative methods
 Wireless communication problems
 Use serial wired link to computer
 Interfacing with peripherals
 Connect directly via serial, or use different
peripherals
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Risks / Contingency Plan cont.
 Interference from magnetic components
 Relocate magnetic-field-sensitive components
(i.e. memory, microcontroller) within system
 Software development problems
 Use simpler method for interfacing i.e. serial,
reduce software functionality
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Questions?