28302 Parallax Inc, 28302 Datasheet

28302

Manufacturer Part Number

28302

Description

KIT DB COLOR SENSOR TCS230-DB

Manufacturer

Parallax Inc

Datasheets

1.28302.pdf (2 pages)

2.28302.pdf (7 pages)

Specifications of 28302

Sensor Type

Light, Color Sensor

Sensing Range

RGB

Interface

Logic Level

Voltage - Supply

2.7 V ~ 5.5 V

Embedded

Utilized Ic / Part

TCS230-DB

Product

Microcontroller Accessories

Clock Speed

600 KHz

Interface Type

SIP

Operating Supply Voltage

5 V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Sensitivity

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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Download datasheet (194Kb)

www.parallax.com

Out of the Box

The TCS230-DB Color Sensor Daughterboard

Kit consists of a TCS230-DB daughterboard

that includes the TAOS TCS230 color sensor

chip, a lens, and two current-regulated white

LEDs. Also included are four one-inch

aluminum standoffs and four 3/4" screws.

The daughterboard is compatible with all

Parallax motherboards, including the

MoBoStamp-pe. It can operate with Vdd set

anywhere between 2.7V and 5.5V. However, a

nominal 5V supply is needed for operation of

the LEDs, which the motherboard

automatically provides. For operation without

a motherboard, such as with Parallax's Board

of Education, an extension cable (p/n 800-

28301) and a SIP adapter ("DB Expander", p/n

28325) are available separately to convert the

TCS230DB's two-row, 2mm header to a more

convenient single-row, 0.1-inch spacing.

Getting Started

If you are using the TCS230-DB with the

MoBoStamp-pe, make sure that you have the

GPIO3 firmware loaded into the AVR

coprocessors. The MoboStamp-pe comes from

the factory with the GPIO3 firmware installed.

If you have installed other AVR firmware,

reload the GPIO3 hex file using the

LoadAVR.exe utility before proceeding.

The TCS230-DB works best with the front

surface of the printed circuit board located

between 1" and 1 / " from the subject being

sensed. For this reason, aluminum spacers are

included, which can be affixed to form legs. If

you are using your TCS230-DB with a

Parallax motherboard, remove all the screws

from the brass spacers at both ends of the

board, and replace them with the 3/4" screws

included in this kit. The screws should be

installed from the bottom of the motherboard

and protrude through the brass spacers. At

this point, you can install the TCS230-DB on

the "B" end of the motherboard and attach the

spacers as shown below. The left-over short

screws may also be screwed into the ends of

the legs as a height adjustment.

www.taosinc.com

1 16

T E X A S

A D V A N C E D

O P T O E L E C T R O N I C

S O L U T I O N S

If you are connecting the TCS230-DB to the

motherboard via the extension cable (p/n

800-28301), attach the spacers directly to the

TCS230-DB using the unused short screws

provided with the motherboard.

If you are using the TCS230-DB with the DB-

Expander instead of a motherboard, you will

need to obtain eight 4-40 x 1/4" panhead

machines screws (Parallax p/n 700-00028) to

attach the legs, since the 3/4" screws

provided are too long, and to use as a height

adjustment.

Now, assuming you're using the

MoBoStamp-pe, key the following BS2pe

program into the BASIC Stamp Editor. (A

similar program, along with programs for

different BASIC Stamp versions is available

for download at

'{$STAMP BS2pe}

Out

LED

pRED

pGREEN CON 12

pBLUE

RED

GREEN

BLUE

Start:

MainLp:

Color:

Next, connect the motherboard to your PC,

and

things should now happen: 1) the white LEDs

on the sensor module will come on, and 2)

you will see output appear in the debug

window that looks something like this:

R123 G065 B200

R120 G060 B187

HIGH

GOSUB

DEBUG

GOTO

LOW

COUNT

HIGH

COUNT

HIGH

COUNT

RETURN

Run

etc.

CON 7

CON 0

CON 1

CON 5

CON 15

CON 9

VAR Word

the program you've entered. Two

LED

MainLp

Color

"R", DEC3 RED

" G", DEC3 GREEN

" B", DEC3 BLUE

Out, pRED, RED

Out, pBLUE, BLUE

Out, pGREEN, GREEN

DAUGHTERBOARD KIT

www.parallax.com.

TAOS #TCS230-DB

COLOR SENSOR

)

These numbers are relative values for the

red, green, and blue components of the color

the sensor is looking at. With the TCS230-DB

perched on its legs atop a piece of white

paper, you will notice that the LEDs form a

bright spot of light in front of the lens. You

may need to adjust the LEDs or the height a

bit to make sure that the spots from both

merge into a single round spot.

Hardware Notes

No technical discussion of the TCS230 sensor

module set would be complete without the

material contained in the TAOS TCS230

datasheet. If you do not have this datasheet,

you are encouraged to download it from the

TAOS website,

The TCS230 has an array of photodetectors,

each with either a red, green, or blue filter, or

no filter (clear). The filters of each color are

distributed evenly throughout the array to

eliminate location bias among the colors.

Internal to the device is an oscillator which

produces a square-wave output whose

frequency is proportional to the intensity of

the chosen color. There is one output from

this oscillator, and the color to be read is

selected using two address lines:

In addition, it is possible to program the

divide rate of the oscillator using two

additional lines,

these control lines and their functions are

summarized below:

The TCS230 chip's data and control lines are

brought directly to the 2mm header, through

which it interfaces to the motherboard or to

another system. The only exception is the

/OE output enable line, which is

permanently asserted low. In addition, both

S0 and S1 are pulled high through resistors

to Vdd, which programs the TCS230 for its

maximum output frequency. Therefore, to

use this setting, neither S0 nor S1 need to be

connected. There are also jumper pads on the

TCS230-DB by which either S0 or S1, or both,

can be strapped low.

To program the data rate from a BASIC

Stamp, it will be necessary to connect S0 and

S1 to a programmable port. On the

MoBoStamp-pe, this must be done through

the AVR coprocessor via the OWOUT

instruction, since these signals do not

S0 S1 Divide

TCS230-DB

Pwr. Down

1:50

1:5

1:1

www.taosinc.com

Parallax #28302

and

. The settings for

S2 S3 Color

Red

Blue

Clear

Green

and

Related parts for 28302

28302 Summary of contents

Page 1

... R123 G065 B200 R120 G060 B187 etc. TCS230-DB COLOR SENSOR Parallax #28302 These numbers are relative values for the red, green, and blue components of the color the sensor is looking at. With the TCS230-DB perched on its legs atop a piece of white paper, you will notice that the LEDs form a bright spot of light in front of the lens ...

Page 2

BASIC Stamp chip. To set S0 and S1 to the values ( contained in variables of the same name, use the following PBASIC code: OWOUT OWIO, 0, [$04 + S0, $14 + S1] where ...

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