Download Grant Proposal for Project Name

Senior Design I Project
Summer B 2006
Overview
Objectives
 Constraints
 Possible Components

Project Objectives

To Modify a Remote Control Toy Car

To propose a new programmed behavior for the device

The programmed behavior should be easily changed by means of program
download

To Understand how the original device works by doing reverse
engineering
 To obtain system parameters by doing pre-modification benchmarks
(Speed and reaction time before hitting and object in the car path)
 Modify the device to accomplish the desired functions with an effective
use of the determined benchmarks



Easy To Use
Economic
Simple Circuitry
Constraints







The project will be based on the Microchip PIC18F877A
All the original electric components of the car must be physically
removed from the car except for the motor, battery, switch and
steering actuator.
The car must be factory equipped with either a 6V or 9.6V block type
rechargeable battery (No AA batteries allowed)
Each modified device should have at least three different behaviors
Project Should be completed by the presentation date indicated in
the syllabus
Teams should be composed of three or two members. There cannot
be more than one two members team in the class.
If there is a single person without team I will assign that person to a
team of my choice.
Extra Credits

There will be extra credits for:
 First
fully functional project
 Best Accomplished project

Extra credit can range from 1 to 5 absolute
points
Components: GP2D12



Sharp GP2D12 Analog Distance Sensor
http://www.parallax.com/detail.asp?product_id=60500003
Features


Less influence on the color of reflective objects, reflectivity
Line-up of distance output/distance judgement type




Distance output type (analog voltage) GP2DI 2 Detecting distance
10 to 80cm
Distance judgement type: GP2DI5
Judgement distance 24cm. Adjustable within the range of 10 to
80cm) 3. External control circuit is unnecessary
GP2D12.pdf
$11.95
Components: GP2D12
2.4 V
80 cm
Components: GP2D12
14,000 lx
Components: 28015




Parallax's new PING)))™ ultrasonic sensor provides a
very low-cost and easy method of distance
measurement. This sensor is perfect for any number of
applications that require you to perform measurements
between moving or stationary objects.
The PING)))™ sensor measures distance using sonar;
an ultrasonic (well above human hearing) pulse is
transmitted from the unit and distance-to-target is
determined by measuring the time required for the echo
return.
http://www.parallax.com/detail.asp?product_id=28015
28015.pdf
Components: 28015

Features











Supply Voltage: 5 vdc
Supply Current: 30 mA typ; 35 mA max
Range: 3cm to3 m( 1.2in to 3.3yrds)
Input Trigger: positive TTL pulse, 2 uS mm, 5 uS typ.
Echo Pulse: positive TTL pulse, 115 uS to 18.5 mS
Echo Hold-off: 750 uS from fall of Trigger pulse
Burst Frequency: 40 kHz for 200 uS
Burst Indicator LED shows sensor activity
Delay before next measurement: 200 uS
Size: 22 mm H x 46 mm W x 16 mm D (0.84 in x 1.8 in x 0.6 in
$24.95
Components: 28015
Components: 28015
Components: 28015
Components: Memsic 2125 Dual-axis
Accelerometer


The Memsic 2125 is a low cost, dual-axis thermal accelerometer
capable of measuring dynamic acceleration (vibration) and static
acceleration (gravity) with a range of ±2 g
Key Features of the Memsic 2125:



Measure 0 to ±2 g on either axis; less than 1 mg resolution
Fully temperature compensated over 0° to 70° C range
Simple, pulse output of g-force for X and Y axis
 Analog output of temperature (TOut pin)
 Low current operation: less than 4 mA at 5 vdc



http://www.parallax.com/detail.asp?product_id=28017
Memsic 2125.pdf
$ 29
Components: Memsic 2125 Dualaxis Accelerometer



How It Works
Internally, the Memsic 2125 contains a
small heater. This heater warms a
"bubble" of air within the device. When
gravitational forces act on this bubble
it moves. This movement is detected
by very sensitive thermopiles
(temperature sensors) and the
onboard electronics convert the bubble
position [relative to g-forces] into pulse
outputs for the X and Y axis.
The pulse outputs from the Memsic
2125 are set to a 50% duty cycle at 0
g. The duty cycle changes in
proportion to acceleration and can be
directly measured by the BASIC
Stamp. Figure 2 shows the duty cycle
output from the Memsic 2125 and the
formula for calculating g force.
Components: IR Transmitter Assembly
Kit

FEATURES







D= 940 nm
Chip material = GaAs
Package type: T-1 (3mm)
Matched Photosensor: QSC112
Narrow Emission Angle, 24°
High Output Power
Package material and color: Clear, peach tinted plastic

http://www.parallax.com/detail.asp?product_id=350-00017
QEC112.pdf

$2.40

Components: IR Transmitter Assembly
Kit
Components: PNA4601M Infrared Receiver

Features








Extension distance is 8 m or more
External parts not required
Adoption of visible light cutoff resin
For infrared remote control systems
$3.95
http://www.parallax.com/detail.asp?pr
oduct_id=350-00014
PNA4601M.pdf
PNA4601Mapp.pdf
Components: PNA4601M Infrared
Receiver
Components: PNA4601M Infrared
Receiver
Components: PNA4601M Infrared
Receiver
Componebts: Infrared Transistor
#: 350-00018



A phototransistor is a
light-sensitive device
similar to other transistors
which act as current
amplifiers, except that it
converts visible light, or
photons, to current which
is then amplified.
http://www.parallax.com/d
etail.asp?product_id=350
-00018
$1.29
http://www.robotroom.com/HBridge.
html
Components: TC4421/TC4422





Features
High Peak Output Current: 9A
Wide Input Supply Voltage Operating Range: 4.5V to 18V
High Continuous Output Current: 2A Max
Fast Rise and Fall Times:




Short Propagation Delays: 30 ns (typ)
Low Supply Current:








30 ns with 4,700 pF Load
180 ns with 47,000 pF Load
With Logic ‘1’ Input: 200 µA (typ)
With Logic ‘0’ Input: 55 µA (typ)
Low Output Impedance: 1.4 (typ)
Latch-Up Protected: Will Withstand 1.5A Output Reverse Current
Input Will Withstand Negative Inputs Up To 5V
Pin-Compatible with the TC4420/TC4429 6A MOSFET Driver
Space-saving 8-Pin 6x5 DFN Package
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName
=en010665
Components: TC4421/TC4422
Components: TC4421/TC4422
Components:Parallax (Futaba) Continuous
Rotation Servo: 900-00008

Technical Specifications












Power 6vdc max
Average Speed 60 rpm, Note: with 5vdc and no torque
Weight 45.0 grams/1.59oz
Torque 3.40 kg-cm/47oz-in
Size mm (L x W x H), 40.5x20.0x38.0
Size in (L x W x H), 1.60x.79x1.50
Manual adjustment port
www.parallax.com
continuous rotation
$6.95
http://www.parallax.com/detail.asp?product_id=900-00008
crservo.pdf
Components:Parallax (Futaba) Continuous
Rotation Servo: 900-00008
Overview
Objectives
 Constraints
 Possible Components

&
Questions
Answers