A000079 Datasheet A000079 | P1-P3

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ARDUINO MOTOR SHIELD REV3

Code:A000079

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TheArduinoMotorShieldallowsyourarduinotodriveDCand

steppermotors,relaysandsolenoids.

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TheArduinoMotorShieldisbasedonthe L298(datasheet),whichisadualfull‐bridge

driverdesignedto driveinductiveloadssuchasrelays,solenoids,DC and stepping

motors.ItletsyoudrivetwoDC motorswithyourArduinoboard,controllingthespeed

anddirectionofeachoneindependently.

Youcanalsomeasurethemotorcurrent

absorptionofeachmotor,amongotherfeatures.TheshieldisTinkerKitcompatible,

whichmeans you canquickly createprojectsby pluggingTinkerKitmodulestotheboard.

http://www.st.com/web/en/catalog/sense_power/FM142/CL851/SC1790/SS1555/PF63147

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TECHSPECS

OperatingVoltage 5Vto12V

Motorcontroller L298P,Drives2DCmotorsor1steppermotor

Maxcurrent

2Aperchannelor4Amax(withexternalpower

supply)

Currentsensing 1.65V/A

Freerunningstopandbrake

function

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 OSH:Schematics

TheArduinoMotorShieldisopen‐sourcehardware!Youcanbuildyourownboard

usingthefollowingfiles:

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EAGLEFILESIN.ZIP

https://www.arduino.cc/en/uploads/Main/arduino_MotorShield_Rev3.zip

SCHEMATICSIN.PDF

https://www.arduino.cc/en/uploads/Main/arduino_MotorShield_Rev3‐

schematic.pdf

Power

TheArduinoMotorShieldmustbepoweredonlybyanexternalpowersupply.

BecausetheL298ICmountedontheshieldhastwoseparatepowerconnections,

oneforthelogicandoneforthemotorsupplydriver.Therequiredmotorcurrent

oftenexceedsthemaximumUSBcurrentrating.

External(non‐USB)powercancomeeitherfromanAC‐to‐DCadapter(wall‐wart)or

battery.Theadaptercanbeconnectedbyplugginga 2.1mmcenter‐positiveplug

intotheArduino'sboardpowerjackonwhichthemotorshieldismountedorby

connectingthewiresthatleadthepowersupplytotheVinandGNDscrew

terminals,takingcaretorespectthepolarities.

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ToavoidpossibledamagetotheArduinoboardonwhichtheshieldismounted,we

reccomendusinganexternalpowersupply thatprovidesavoltagebetween7and

12V.Ifyourmotorrequiremorethan9Vwerecommendthatyouseparate the

powerlinesoftheshieldandtheArduinoboardonwhichtheshieldismounted.

Thisispossiblebycuttingthe"VinConnect"jumperplacedonthebacksideofthe

shield.TheabsolutelimitfortheVinatthescrewterminalsis18V.

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Thepowerpinsareasfollows:

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 Vinonthescrewterminalblock,istheinputvoltagetothemotorconnectedtothe

shield.Anexternalpowersupplyconnectedtothispinalsoprovidepowertothe

Arduinoboardonwhichismounted.Bycuttingthe"VinConnect"jumperyoumake

thisadedicatedpowerlineforthemotor.

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 GNDGroundonthescrewterminalblock.

Theshieldcansupply2amperesperchannel,foratotalof4amperesmaximum.

InputandOutput

Thisshieldhastwoseparatechannels,calledAandB,thateachuse4ofthe

Arduinopinstodriveorsensethemotor.Intotalthereare8pinsinuseonthis

shield.YoucanuseeachchannelseparatelytodrivetwoDCmotorsorcombine

themtodriveonebipolarsteppermotor.Theshield'spins,dividedbychannelare

showninthetablebelow:

Function

pinsperCh.

A

pinsperCh.

B

Direction D12 D13

PWM D3 D11

Brake D9 D8

Current

Sensing

A0 A1

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Ifyoudon'tneedtheBrakeandtheCurrentSensing andyoualsoneedmorepins

foryourapplicationyoucandisablethisfeaturesbycuttingtherespectivejumpers

onthebacksideoftheshield.

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Theadditionalsocketsontheshieldaredescribedasfollow:

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 Screwterminaltoconnectthemotorsandtheirpowersupply.

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 2TinkerKitconnectorsfortwoAnalogInputs(inwhite),connectedtoA2andA3.

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 2TinkerKitconnectorsfortwoAanlogOutputs(inorangeinthemiddle),

connectedtoPWMoutputsonpinsD5andD6.

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 2TinkerKitconnectorsfortheTWIinterface(inwhitewith4pins),oneforinput

andtheotheroneforoutput.

P1-P3 P4-P4

A000079

Mfr. #:

Buy A000079

Manufacturer:

Arduino

Description:

ARDUINO SHIELD - MOTOR SHIELD

Lifecycle:

New from this manufacturer.

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A000079