通用射频按键（八）
Step9FurtherstepsThiswasatoproveIcoulddoitproject-Ihavecompletedit,soitnowsitsonmyshelfatworktoremindothersthatsimpleRFIDsystemsaresimplynotsecure.Youarewelcometoadapttheprojecthoweveryouwouldliketo,andwhileyoumayhavetheskeletonkeystothekingdom
发表于 6/1/2011 11:00:17 PM
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通用射频按键（七）
Step7ProgrammingtheMicroIusedastandard6pinheadermountedonthePCBtoallowaFTDI5VUSB-232cabletobeusedtoprogramthechipin-situ-thiswasespeciallyimportant,astheATMegachipissoldereddirectlytothePCB,soitcouldntberemovedforinsertionintoanormalArduinoPCB-
发表于 6/1/2011 10:58:46 PM
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通用射频按键（六）
Step6MountingthecomponentsTokeeptheprojectthesamesizeasanormalproxcard,IdecidedtomakeitonasmallPCBthatwasthesamesizeasabusinesscard.IdecidedtousesurfacemountpushbuttonsthatIbroughtfromeBay,sothatmeantthatallofthecomponentsmustbesolderedontothec
发表于 6/1/2011 10:53:50 AM
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通用射频按键（五）
Step4TheSoftware-EnteringdataintoourcardThesoftwarewasnext.UsingtheArduinoIDE,IimplementedasimplemenusystemthatallowedmetoentertherelevantfacilityandCardIDdatadirectlyfromthekeypad.IalsoprovidedawayofdisplayingthedatausingtheL
发表于 6/1/2011 10:42:08 AM
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通用射频按键（四）
Step3Howdoweemulateacard?Sothenextstepwastoidentifyhowtopretendtobeacard-IwantedacardthatIcouldtypeacardnumberinto,soithadtohaveamicroprocessoronit,waswellasakeypadtoallowthedatatobekeyedin.TheATMegamanipulatesthe125kHzRFfieldbyusingabrid
发表于 6/1/2011 10:39:17 AM
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通用射频按键（三）
Step2Whatsstoredonthecard?IstartedbybuildingaRFIDcardreader(moredetailsinafuturearticle).Thatshowedmethedatathatwasbeingsentwhenthecardtransmitteditsinformation.TheRFIDcardsthatIbroughthavenumbersprintedonthebackofthem.T
发表于 5/31/2011 8:05:50 PM
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通用射频按键（二）
Step1HowdoesRFIDwork?RFID,orRadioFrequencyIDentificationisthetermusedtodescribeawidevarietyofstandardsthatallowdatastoredwithinelectronictagstobereadbyareaderwithoutusingwires.Thereareanumberofstandards,encodingformats,andfrequenciesincom
发表于 5/31/2011 8:00:33 PM
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通用射频按键（一）
AUniversalRFIDKeyRFIDprojectshavebeenprettyprominentrecently,rangingfromprojectshereinInstructables,toourlocalSiliconChipmagazineinAustraliapublishingaRFIDdoorlockprojectintheirNovemberissue.EvenIrecentlypurchasedaRFIDdoorlockoneBayfor$15
发表于 5/31/2011 7:57:01 PM
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LED星型发光时钟（八）
Step7StuffitallinandFinishEverythingneedstogetputintothehousing.-Forthisclock,theclockmechanism(whichtakesAC),thePSUACwiresandtheACCordwireswhereallwirenuttedtogether,excepttheHotLeadforthePSU,thatwassolderedtotheswitchandanotherwirewasranfromt
发表于 5/31/2011 10:19:30 AM
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LED星型发光时钟（七）
Step6SwitchfortheLEDsSincetheclockwillalwaysbeon,andtheLEDsshouldnotalwaysbeon,IaddedarockerswitchtothebottomoftheclockthatturnsofftheACtothePSU.-Placesomemaskingtapeinthespottheswitchisgoingtogo.-Marktheouterdimensionoftheswitch.-Useahacksawor
发表于 5/31/2011 10:17:34 AM
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LED星型发光时钟（六）
Step5AttachtheDriverorResistorstotheLEDsIfaLEDcontrollerisbeingused:-ConstructyourdriverusingThisInstructableorOneofyourchoosing.-SolderthewireleadsoftheLEDsintotheircorrectholesonthedriver.IfsingleColorLEDsarebeingused:
发表于 5/31/2011 10:09:55 AM
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LED星型发光时钟（五）
Step4GlueintheLEDsWarmupyourhotgluegunorusesomeothertypeofclearglue.-FindagoodholetoplacethefirstoftheLEDsinto.-ApplysomegluetotheoutsideoftheLED,besurenottogetanyonthelensoftheLED.-Placeitinitshole,andveryslightlyangleittowardswher
发表于 5/31/2011 10:05:51 AM
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LED星型发光时钟（四）
Step3WiretheLEDsIwasalreadyalmostfinishedwiththewiringbeforeIthoughtIshouldmakeitintoanInstructable.Butitssimpleenough,alltheRGBLEDswerewiredinparallelonastringof4solidstrandwires.Athird-handreallyhelpswiththisstep.Ipreferredtousesolidstr
发表于 5/31/2011 12:19:09 AM
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LED星型发光时钟（三）
Step2DrillHolesforLEDsFirstofftheholepositionsneedtomarked.Theclocksdiameterwas9.25"soitscircumferencewasabout29".SinceIwanted8LEDs,Ispacedtheholes3.65"apart.Icutabendablepieceofplastictouseasa
发表于 5/30/2011 3:34:50 PM
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LED星型发光时钟（二）
Step1CollecttheSuppliesIhaveBasicKitsandEconomyKitsfortheLEDDriverIusedforthisproject.AswellasPCBswithfreeshipping.GetatheSameKitasseeninthisInstructable,with12xPirahnaRGBLEDsMix20ofanyColor5mmLED
发表于 5/30/2011 3:22:04 PM
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