Stepper Motor 5V 4 Phase 5 Wire & ULN2003 Driver Board For Arduino Geeetech Wiki

: Pdf Stepper Motor 5V 4-Phase 5-Wire & Uln2003 Driver Board For Arduino - Geeetech Wiki Stepper Motor 5V 4-Phase 5-Wire & ULN2003 Driver Board for Arduino - Geeetech Wiki 107-93-1050 aftab

Open the PDF directly: View PDF .
Page Count: 6

6/24/2017 StepperMotor5V4Phase5Wire&ULN2003DriverBoardforArduinoGeeetechWiki

http://www.geeetech.com/wiki/index.php/Stepper_Motor_5V_4Phase_5Wire_%26_ULN2003_Driver_Board_for_Arduino 1/6

StepperMotor5V4Phase5Wire&ULN2003

DriverBoardforArduino

FromGeeetechWiki

Contents

1StepperIntroduction

2Features

3Steppermotor28BYJ48Parameters

4Interfacingcircuits

5Examplecode

5.1Code

5.2Stepperlibrary

6Document

7ReferenceMaterials

8Howtobuy

StepperIntroduction



Asteppermotorisanelectromechanicaldevicewhichconvertselectricalpulsesintodiscretemechanical

movements.Theshaftorspindleofasteppermotorrotatesindiscretestepincrementswhenelectricalcommand

pulsesareappliedtoitinthepropersequence.Themotorsrotationhasseveraldirectrelationshipstotheseapplied

inputpulses.Thesequenceoftheappliedpulsesisdirectlyrelatedtothedirectionofmotorshaftsrotation.The

speedofthemotorshaftsrotationisdirectlyrelatedtothefrequencyoftheinputpulsesandthelengthofrotation

isdirectlyrelatedtothenumberofinputpulsesapplied.Oneofthemostsignificantadvantagesofasteppermotor

6/24/2017 StepperMotor5V4Phase5Wire&ULN2003DriverBoardforArduinoGeeetechWiki

http://www.geeetech.com/wiki/index.php/Stepper_Motor_5V_4Phase_5Wire_%26_ULN2003_Driver_Board_for_Arduino 2/6

isitsabilitytobeaccuratelycontrolledinanopenloopsystem.Openloopcontrolmeansnofeedbackinformation

aboutpositionisneeded.Thistypeofcontroleliminatestheneedforexpensivesensingandfeedbackdevicessuch

asopticalencoders.Yourpositionisknownsimplybykeepingtrackoftheinputsteppulses.

Features

1.Therotationangleofthemotorisproportionaltotheinputpulse.

2.Themotorhasfulltorqueatstandstill(ifthewindingsareenergized)

3.Precisepositioningandrepeatabilityofmovementsincegoodsteppermotorshaveanaccuracyof–5%ofa

stepandthiserrorisnoncumulativefromonesteptothenext.

4.Excellentresponsetostarting/stopping/reversing.

5.Veryreliablesincetherearenocontactbrushesinthemotor.Thereforethelifeofthemotorissimply

dependantonthelifeofthebearing.

6.Themotorsresponsetodigitalinputpulsesprovidesopenloopcontrol,makingthemotorsimplerandless

costlytocontrol.

7.Itispossibletoachieveverylowspeedsynchronousrotationwithaloadthatisdirectlycoupledtotheshaft.

8.Awiderangeofrotationalspeedscanberealizedasthespeedisproportionaltothefrequencyoftheinput

pulses.

Steppermotor28BYJ48Parameters

Model：28BYJ48

Ratedvoltage：5VDC

NumberofPhase：4

SpeedVariationRatio：1/64

StrideAngle：5.625°/64

Frequency:100Hz

DCresistance：50Ω±7%(25℃)

IdleIntractionFrequency:>600Hz

IdleOuttractionFrequency:>1000Hz

IntractionTorque>34.3mN.m(120Hz)

SelfpositioningTorque>34.3mN.m

Frictiontorque:6001200gf.cm

Pullintorque:300gf.cm

Insulatedresistance>10MΩ(500V)

Insulatedelectricitypower：600VAC/1mA/1s

Insulationgrade：A

RiseinTemperature<40K(120Hz)

Noise<35dB(120Hz,Noload,10cm)

Interfacingcircuits

6/24/2017 StepperMotor5V4Phase5Wire&ULN2003DriverBoardforArduinoGeeetechWiki

http://www.geeetech.com/wiki/index.php/Stepper_Motor_5V_4Phase_5Wire_%26_ULN2003_Driver_Board_for_Arduino 3/6

Thebipolarsteppermotorusuallyhasfourwirescomingoutofit.Unlikeunipolarsteppers,bipolarsteppershave

nocommoncenterconnection.Theyhavetwoindependentsetsofcoilsinstead.Youcandistinguishthemfrom

unipolarsteppersbymeasuringtheresistancebetweenthewires.Youshouldfindtwopairsofwireswithequal

resistance.Ifyou’vegottheleadsofyourmeterconnectedtotwowiresthatarenotconnected(i.e.notattachedto

thesamecoil),youshouldseeinfiniteresistance(ornocontinuity).



ThesimplestwayofinterfacingaunipolarsteppertoArduinoistouseabreakoutforULN2003Atransistorarray

chip.TheULN2003AcontainssevendarlingtontransistordriversandissomewhatlikehavingsevenTIP120

transistorsallinonepackage.TheULN2003Acanpassupto500mAperchannelandhasaninternalvoltagedrop

ofabout1Vwhenon.Italsocontainsinternalclampdiodestodissipatevoltagespikeswhendrivinginductive

loads.Tocontrolthestepper,applyvoltagetoeachofthecoilsinaspecificsequence.

Thesequencewouldgolikethis:

6/24/2017 StepperMotor5V4Phase5Wire&ULN2003DriverBoardforArduinoGeeetechWiki

http://www.geeetech.com/wiki/index.php/Stepper_Motor_5V_4Phase_5Wire_%26_ULN2003_Driver_Board_for_Arduino 4/6

HereareschematicsshowinghowtointerfaceaunipolarsteppermotortofourcontrollerpinsusingaULN2003A,

andshowinghowtointerfaceusingfourTIP120's.

Examplecode

Code

intPin0=10;

intPin1=11;

intPin2=12;

intPin3=13;

int_step=0;

booleandir=true;//gre

voidsetup()

{

pinMode(Pin0,OUTPUT);

pinMode(Pin1,OUTPUT);

pinMode(Pin2,OUTPUT);

pinMode(Pin3,OUTPUT);

}

voidloop()

{

switch(_step){

case0:

digitalWrite(Pin0,LOW);

digitalWrite(Pin1,LOW);

digitalWrite(Pin2,LOW);

digitalWrite(Pin3,HIGH);

break;

case1:

6/24/2017 StepperMotor5V4Phase5Wire&ULN2003DriverBoardforArduinoGeeetechWiki

http://www.geeetech.com/wiki/index.php/Stepper_Motor_5V_4Phase_5Wire_%26_ULN2003_Driver_Board_for_Arduino 5/6

digitalWrite(Pin0,LOW);

digitalWrite(Pin1,LOW);

digitalWrite(Pin2,HIGH);

digitalWrite(Pin3,HIGH);

break;

case2:

digitalWrite(Pin0,LOW);

digitalWrite(Pin1,LOW);

digitalWrite(Pin2,HIGH);

digitalWrite(Pin3,LOW);

break;

case3:

digitalWrite(Pin0,LOW);

digitalWrite(Pin1,HIGH);

digitalWrite(Pin2,HIGH);

digitalWrite(Pin3,LOW);

break;

case4:

digitalWrite(Pin0,LOW);

digitalWrite(Pin1,HIGH);

digitalWrite(Pin2,LOW);

digitalWrite(Pin3,LOW);

break;

case5:

digitalWrite(Pin0,HIGH);

digitalWrite(Pin1,HIGH);

digitalWrite(Pin2,LOW);

digitalWrite(Pin3,LOW);

break;

case6:

digitalWrite(Pin0,HIGH);

digitalWrite(Pin1,LOW);

digitalWrite(Pin2,LOW);

digitalWrite(Pin3,LOW);

break;

case7:

digitalWrite(Pin0,HIGH);

digitalWrite(Pin1,LOW);

digitalWrite(Pin2,LOW);

digitalWrite(Pin3,HIGH);

break;

default:

digitalWrite(Pin0,LOW);

digitalWrite(Pin1,LOW);

digitalWrite(Pin2,LOW);

digitalWrite(Pin3,LOW);

break;

}

if(dir){

_step++;

}else{

_step‐‐;

}

if(_step>7){

_step=0;

}

if(_step<0){

_step=7;

}

delay(1);

}

Stepperlibrary

TheArduinoprogrammingenvironmentcomeswithafunctionlibraryforcontrollingasteppermotor.Tousethe

library,intheArduinoEditorfromthetopmenubar:Sketch>ImportLibrary>Stepper.Copytheexamplecode

belowintoanArduinoprogram.

ArduinoExampleCodeNotes:

6/24/2017 StepperMotor5V4Phase5Wire&ULN2003DriverBoardforArduinoGeeetechWiki

http://www.geeetech.com/wiki/index.php/Stepper_Motor_5V_4Phase_5Wire_%26_ULN2003_Driver_Board_for_Arduino 6/6

1.TheexamplecodeassumesthatthestepperisbeingcontrolledbyArduinopins8,9,10and11,butyoucan

useanysetoffourpins.

2.The"#defineSTEPS100"linedefinesthenumberofstepsperrev.A3.75degmotorhas96steps/revwhile

a7.2degmotorhas48steps/rev.

3.The"Stepperstepper(STEPS,8,9,10,11)"lineiswhereyouenterthefourpinsusedtocontrolthestepper.

4.The"stepper.setSpeed(x)"commandsetsthemotorspeedtoxrpm.

5.The"stepper.step(x)"commandturnsthemotorxstepsatthespeedlastsetinthestepper.setSpeed()

command.Themotorturnsonedirectionforpostivexandthereversedirectionfornegativex.

Document

Steppermotorbasic(http://www.geeetech.com/Documents/Stepper%20motor%20basic.pdf)

StepperMotorDatasheet(http://www.geeetech.com/Documents/Stepper%20motor%20datasheet.pdf)

ULN2003Datasheet(http://www.geeetech.com/Documents/ULN2003%20datasheet.pdf)

ReferenceMaterials

tigoe'sbloghttp://www.tigoe.net/pcomp/code/circuits/motors/steppermotors/

silveir'bloghttp://silveiraneto.net/?s=stepper

MEarduinocoursehttp://www.me.umn.edu/courses/me2011/arduino/technotes/stepper/index.html

Howtobuy

Clickheretobuy5V4Phase5WireStepperMotor(http://www.geeetech.com/5v4phase5wiresteppermotorp

368.html)andStepperMotorDriverBoardULN2003forArduino(http://www.geeetech.com/steppermotor

driverboarduln2003forarduinop428.html)

Retrievedfrom"https://www.geeetech.com/wiki/index.php?title=Stepper_Motor_5V_4Phase_5

Wire_%26_ULN2003_Driver_Board_for_Arduino&oldid=1999"

Thispagewaslastmodifiedon28July2012,at02:31.

Thispagehasbeenaccessed220,076times.