RIT MSD ProjectRC Camera Car

Fall / Spring 2013-14

By: Tim SouthertonDPM 0304-730-01

05/16/13

https://www.youtube.com/watch?v=7lPU8s11i8Y

Project OverviewHigh Visibility Project Uses

• Imagine RIT • Freescale Cup

Deliverables• RC Camera Car and Console

Fun to Drive Durable Easy to Use Entertaining Scoped for MSD

• Practice Course for other Projects

http://3.bp.blogspot.com/-waiX974KiQA/URN3fF8BlxI/AAAAAAAAA5w/490X1ywOCKE/s1600/TFC_BaseBoardMounted.jpg

Project Support Possible Faculty Champions:

• Dr. Becker-Gomez (CE)• Dr. Hopkins (EE)

Other Faculty Support:• Dr. Melton (Freescale Experience)• Dr. Pow (Camera Experience)• Dr. Walter (Robotics Experience)• Mr. Slack (EE MSD Coordinator)

Funding Support• Mr. Smith (MSD Coordinator)• Mr. Mastronardi (Freescale)

http://www.rcrwireless.com/austin/files/2011/02/freescale_11.jpg

http://people.rit.edu/rpmeie/images/rit_black_no_bar.gif

Control an RC Camera Car RemotelyTr

an

sport

C

om

pon

en

ts

Move C

ar

Chass

is

Meet

Car

Pow

er

Budget

Com

mu

nic

ate

W

irele

ssly

Contr

ol M

ovem

ent

Transm

it V

isuals

Meet Constraints

Const

rain

Car

Travel A

rea

Allo

w U

ser

Usa

ge

Hold

Car

Togeth

er

Sw

itch

Car

Com

ponents

Sta

y W

ithin

Budget

Look

Pro

fess

ional

Keep C

ar

from

Gett

ing

Stu

ck

Involv

e M

ult

iple

D

isci

plin

es

Dem

onst

rate

Innovati

on

Use

DIY

Com

ponents

May be Constrained

by Components

Allow for Project Flexibility with

Staffing

Feasibility AnalysisFeasibility Analysis Summary

# Analysis Info Source(s) Type

1.) Car Power RequirementsDatasheets, Instruction Manuals

Rough Battery Size Estimation

2.) Cost AnalysisVendor Sites, Experience

Rough Overall Cost Estimation

3.) MCU FlowchartObjective

ComponentsGeneral Electrical Task

Flow

4.) Weight TestPhysical

MeasurementWeigh Components and

Compare# Assumptions Feasibility Solution Date

1.)Microcontroller / Wireless Chip / Wireless

Camera Setup; Full Power DrawPossible

5000 mAh Battery Capacity

4/20

2.)Major Parts: USB Controller, Microcontrollers,

Batteries, Camera, Screen, CarPossible Approx. $825 4/21

3.)Overall Approach Fixed; Camera Transmission

SeparatePossible

Reasonable for MCU

4/27

4.)Similar Components Weight Approx.; Freescale

Car can Move SufficientlyPossible

Reasonable Payload

4/24

Cost AnalysisItem Quantity Unit Price Total Price Commentsnd # $ $ nd

Microcontroller 2 25.00 50.00 TBD EstimateWireless Chip 2 50.00 100.00 TBD Estimate

Wireless Camera w/ TX/RX 1 55.00 55.00 900 MHz 200mW RC CameraMotor Controller 1 20.00 20.00 TBD Estimate

Steering / Throttle Controller 1 100.00 100.00 Logitech MOMO Setup, Probably UsedBattery w/ Connectors 2 20.00 40.00 2S 20C 5000 mAh Turnigy LiPo

Battery Charger 1 25.00 25.00 Turnigy Accucel-6 (Charges Most Batteries)Assorted Other Components 1 50.00 50.00 Fasteners, Extra RC Parts, etc.

Console Desk 1 30.00 30.00 Component Mounting AreaLCD TV 1 125.00 125.00 TBD Estimate

Chair 1 50.00 50.00 Adjustable for UserFreescale Cup Chassis 1 80.00 80.00 Frame, Wheels, Motors, Servo

Course Budget 1 100.00 100.00 TBD EstimateTotal Cost     825.00

Freescale Cup DonationOther Donations

Metrics, Specs, and Constraints

  Function Metrics Direction Ideal Target Marginal Units

From Function Tree

Move Car Chassis Travel Speed | | 0 to 10 - 0 to 1 ft/sec  Additional Payload ↑ 1.2 - 0.5 lb

Control Movement Control Range ↑ 200 100 10 ft

  Control Delay ↓ Not Almost Not Somewhat Noticeable

  Steering Ratio (I/O) | | - 12:1 to 20:1 - nd  Throttle Travel (Full Accel.) | | 2.5 - 0.5 in  Forward / Reverse Target Yes Yes Yes Yes/No

Transmit Visuals Camera Range ↑ 200 100 10 ft

  Camera Delay ↓ Not Almost Not Somewhat Noticeable

  Framerate ↑ 30 20 15 fps  Resolution | | VGA - CGA pixels

Meet Power Budgets See Budgets Target Yes Yes Yes Yes/No  Car Run Time ↑ 1 - 0.25 hours

Meet Constraints See Constraints Target Yes Yes Yes Yes/No

  Function Metrics Direction Ideal Target Marginal Units

From

Project Constraint

s

Constrain Car Travel Area User Stays on Course ↑ 100 90 80 % of Laps

Allow User Usage Learning Curve Time ↓ 60 120 300 sec

Hold Car Together Car Survives Collisions ↑ 10 8 5 Collisions

Switch Car ComponentsCar Downtime after

Damage↓ 0 2 24 hours

Stay Within Budget Total Cost ↓ 500 750 1000 $

Look Professional Positive Visual Inspection ↑ 100 90 50 % of Users

Keep Car from Getting Stuck Manual Reset Required ↓ 0 1 2 Resets / Hour

Involve Multiple Disciplines Different Majors Involved ↑ 3 2 1 Majors

Demonstrate Innovation Event Entry ↑ 3 2 1 Events

Use DIY Components Product Expandable Target Yes Yes Yes Yes/No

Potential Concepts

Constrained

FunctionMeet Console Power

BudgetAllow User Usage Hold Car Together Stay Within Budget Look Professional

Means DC Power BrickUse a Steering Wheel /Pedal

Controller

Depends on Chassis Geometry

Depends on Component Evaluation

Depends on Chassis Geometry and Components

FunctionInvolve Multiple

DisciplinesDemonstrate Innovation

Use DIY Components Control Movement Transmit Visuals

MeansDepends on Final

Project ScopeDepends on Availability

See Other Components

Microcontroller, 900 MHz RF, Steering

Wheel / Pedal USB

900 MHz 200mW TX/RX Camera, Analog Input TV

Monitor

Concept

FunctionConstrain Car Travel

AreaKeep Car from Getting Stuck

Switch Car Components

Move Car ChassisMeet Car Power

Budgets

A

Means

Tape line course Stabilization boomsPadded electronics

enclosure

Freescale Cup Chassis with H-

BridgeLiPo Battery

BIndoor course with mech. challenges

Wheels bigger than car chassis

Covering body pieceAlternative Chassis

with H-BridgeNi-MH Battery

CIndoor course with

terrainInflatable bladder

Glue components to chassis

Freescale Cup Chassis with ESC

(TEU-104BK)Ni-MH Battery

D4th floor tables and

chairsBumper system

Components bolted on

Freescale Cup Chassis with H-

BridgeLi-Ion Battery

Pugh MatrixInspiration Model

Project #R13904 RC Camera Car

    Concepts

Selection Criteria Benchmark A B C D

Robustness 0 + + - 0

Cost 0 + - 0 +

Usage Time 0 + - 0 +

Ease of Replacement 0 + 0 - +

Drivability 0 + + + +

Appearance 0 - + 0 0

Diversity of Terrain 0 - + + 0

Collision Opportunity 0 0 - - -

Bystander Safety 0 - 0 0 -

Downtime 0 + - - 0

Expandability 0 + 0 + -

Sum + 's (2 pts) 0 7 4 3 4

Sum 0's (1 pts) 11 1 3 4 4

Sum -'s (0 pts) 0 3 4 4 3

Rank 11 15 11 10 12

Additional Information Ideal Staffing

• 2 ME’s – Robotics / Fabrication • 2 EE’s – Microcontroller / Power• 2 CE’s – Programming / Interfacing

Project Scalable with Available Staffing• Optical Timing Gate – EE’s• Reverse Camera – ME’s• Line Following – CE’s

Possible Resources• 10’ x 10’ Work Area for Course Development