View
8
Download
0
Category
Preview:
Citation preview
ADVANCEDEV3PROGRAMMINGLESSON
IntroductiontoBluetoothBySanjayandArvindSeshan
ì LearnhowtousetheBluetoothfunctionalityonyourEV3
ì Learntosendandreceivemessages betweenEV3bricks
Objectives
CopyrightEV3Lessons,2016,LastEdit7/19/2016
ì Bluetoothusesradiofrequenciestocommunicatebetweendevices
ì TheEV3usesBluetoothtodownloadprogramswirelessly
ì TheEV3alsousesBluetoothtoconnecttoanotherEV3
WhatisBluetooth?
CopyrightEV3Lessons,2016,LastEdit7/19/2016
ì Coordinatingmultiplerobotsì Havethemperformsimilar
actionsì Synchronizetheiractions
CopyrightEV3Lessons,2016,LastEdit7/19/2016
WhyUseBluetoothontheEV3?
ì Controllingalargesinglerobotwithmultiplebricks
ì Analternativetodaisychaining:Requireslesswiringbutneedsseparateprograms
ì Giveeachbrickanuniquename(SenderandReceiverforthislesson)
ì UseanUSBcablefordownloadingcodetothebricks(ratherthanBluetooth).YoucannotconnectbetweenEV3sandaPCatthesametime
ì Turnonthereceiverrobotfirstthenthesenderinthechallengesinthislesson.ThisisbecausethechallengesolutiononlysendsthemessageonceinChallenge1.
TipsforSuccess
CopyrightEV3Lessons,2016,LastEdit7/19/2016
ActivatingBluetoothontheEV3
ì TurningonBluetooth:ì OntheEV3menu,gotothe
symbolthatlookslikeawrenchì Godowntotheword“Bluetooth”
andactivateit
ì ToconnecttoanotherbrickgobackintotheBluetoothmenuì Goto“Connections”ì Select“Search”andfindtheother
brick’sname
ì YoucanalsomanageyourconnectionswiththeBluetoothConnectionBlock.Butwedonotusethisblockinthislesson.
CopyrightEV3Lessons,2016,LastEdit7/19/2016
ì ThemessagingblockcanbefoundintheBluePallet.
ì YouwillalsousetheWaitForblockinMessagingMode
NewBlock:Messaging
CopyrightEV3Lessons,2016,LastEdit7/19/2016
ì Senda“HelloWorld”messagefromonebricktoanother
ì Thesecondbrickshouldreceiveanddisplaythemessageonitsscreenfor5seconds
ì Tips:ì Youwillneedtopairthetwo
robotsaheadoftimeì NameonerobotSenderandthe
otherReceiverforthischallengeì Forthischallenge,youwilluse
theMessagingblockà SendàText
ì YouwillusetheWaitForblockintheMessagingModeà Changeà Text
Challenge1
Video
CopyrightEV3Lessons,2016,LastEdit7/19/2016
Challenge1Solution
CodeontheSenderRobot
CodeontheReceiverRobot
Sendsthemessage“HelloWorld”totheReceiverrobot.Themessagetitle“Greeting”mustmatchinthereceiver’sprogram.
Waitforamessagefromthefirstrobotanddisplaythetextfor5seconds
CopyrightEV3Lessons,2016,LastEdit7/19/2016
ì Movethefirstrobotbyhandandsendthemotors’powertotheotherrobot
ì Havethesecondbrickreceivethedataandcopythemovement
Challenge2:SynchronizedSwimmers
CopyrightEV3Lessons,2016,LastEdit7/19/2016
Challenge2Solution
CodeontheSenderRobot
CodeontheReceiverRobot
CopyrightEV3Lessons,2016,LastEdit7/19/2016
Readeachofthemotors’powerandsendthemusing twodifferentmessagetitlestotheReceiverrobot
Readthetwodifferentmessagetitlesandapplythereceivedpowervalues
ì OnceyouknowhowtouseBluetoothontheEV3,youcancreatecomplexrobotswheremovement iscoordinatedandsynchronized
ì MasterLeeMagpili’s EagleisanexampleofsuchaprojectwhereBluetoothmessagesareusedtocoordinatehead,legandwingmovement.(Photosandcodepostedwithpermission.) AnotherbrickusesBluetooth toremotelycontroltheEagle.
ì Thisprojectrequires thefollowing partsforthebirdandaremote:ì 5EV3sì 17Motorsì 2TouchSensors
PuttingitallTogether
CopyrightEV3Lessons,2016,LastEdit7/19/2016
CopyrightEV3Lessons,2016,LastEdit7/19/2016
TheEagle
ThisissmallpartoftheEagle’scode.HereyouseethattheEaglehasfivemodes.Inthisview,youseethatmessagesarebeingsentto“Legs1”and“Wings”EV3bricks.
ThankyoutoMasterLeeMagpili forsharinghiscodewithEV3Lessons.
Recommended