LED星型发光时钟（一）
LEDStarBeamClockForthisdesign,somePiranhaRGBLEDsarepositionedaroundtheoutsideedgeofaclockthathangsonthewall.Theyareslightlyangledsotheirbeamswillcreateastarpatternagainstthewallasitcyclesthroughapprox16millioncolors.Iamusingac
发表于 5/30/2011 3:18:09 PM
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海绵+氯化铁=1分钟完成PCB雕刻（四）
Step4CleanUp(NotMuchToDo)Thecleanupreallyisjustamatterofrinsingoutthesponge,throwingawaytherubbergloves(orrinsingthemoffforreuse),andcleaninganyspilleddropsofferricchloridefromtheworksurface.Youcanreusethespongeoverandover,sorinseitandletitdry,
发表于 5/30/2011 1:01:43 PM
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海绵+氯化铁=1分钟完成PCB雕刻（三）
刚才用了同学的浏览器，出了一些小问题，果断的还是自己的比较好用，呵呵。前面一篇现在看起来显示正常了。。。。Step3EtchtheBoard(InstantGratification!)Putonyourrubbergloves.Openthebottleofferricchlorideandputthespongeovertheopening,andtipthebottletoletabo
发表于 5/29/2011 4:31:33 PM
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海绵+氯化铁=1分钟完成PCB雕刻（二）
Step1WhatYouWillNeedYoudontneedalotofsuppliesforthisInstructable,justthefollowing:oFerricchloride(availableatRadioShack,16ozbottlefor$10,partnumber276-1535)oSponge(2"x2"square,cutfromanysponge,orpapertowelwillworktoo)oRubberGloves(youdontwa
发表于 5/29/2011 1:54:49 PM
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海绵+氯化铁=1分钟完成PCB雕刻（一）
InthisInstructable,Iwillshowyouhowtoetchacircuitboardwithaboutatablespoonofferricchlorideetchingsolutionanda2inchsquaresponge.YouwillbeamazedastheexposedcopperonthePCBdisappearsbeforeyoureyes,andyourboardiscompletelyetchedinaminuteorless!Ifoundapassi
发表于 5/29/2011 1:46:28 PM
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简单DIY制作——分光计（七）
Step7SomeresultsMeasuringdyesAsafirsttest,Idecidedtomeasuresomesamplesoffoodcoloringandmethyleneblue.IdonthavealotofdatapointsbecausethesteppermotorImusingtakesratherbigsteps,resultinginratherbigwavelength-jumps.Also,becauseth
发表于 5/28/2011 8:39:30 PM
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简单DIY制作——分光计（六）
Step6Letsmeasure!WorkinginthedarkBecausetheLDRreactstolight,youllhavetomakesuretoworkinasdarkanenvironmentaspossibletopreventanystraylightfromhittingthedetector.Youcouldputthewholedeviceinadarkbox,ordarkentheroomyoureworkingin.Blankmeasurements
发表于 5/28/2011 11:30:56 AM
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简单DIY制作——分光计（五）
Step5DetectingthelightAmplificationcircuitTodetectthelightthatpassesthroughthesample,weregoingtouseanLDR,orLight-DependentResistor.Thoughitwouldbepossibletoobtainreadingsbyconnectinganohm-meterstraighttotheLDR,itprobablyisabetterideatocon
发表于 5/28/2011 11:26:49 AM
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简单DIY制作——分光计（四）
Step4SelectingthewavelengthTheslitToaccuratelyselectaverysmallsectionofthespectrum,onewouldhavetomakeanextremelynarrowslit.Sincethisisveryhardtodoathome,Ichosetomaketwoslitsinsteadthatarenot100%aligned,soonlyaverynarrowbandoflightcanpassthrough
发表于 5/28/2011 11:20:11 AM
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简单DIY制作——分光计（三）
Step3DiffractionSplittingthelightTobeabletoselectacertainwavelength(thecoloroflightdependsonitswavelength)wefirstneedtosplitthelightintoaspectrum.Thiscanbeaccomplishedbyadiffractiongrating.Sincemostpeopledonthavediffractiongratingslyingaroundth
发表于 5/27/2011 11:39:37 PM
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简单DIY制作——分光计（二）
Step1SourcingthepartsMostpartsarefairlyeasytoobtain.Youwillneed:Forthesteppercircuit:AsteppermotoranArduino(orastepperdrivercircuit)2x10kresistor2x1kresistorL293DH-Bridge2xNPNtransistor(IusedtheBC547A)ApowersupplyForthedetectionandamplifi
发表于 5/27/2011 11:20:44 PM
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简单的DIY制作——分光计（一）
AsimpleDIYspectrophotometerWhatsallthis?Thisinstructablewillexplainhowtobuildafairlybasicbutworkingspectrophotometeroutofeasilysourceableparts.Ofcourse,thisdeviceisnothingcomparedtoacommercialspectrophotometer,butitwillallowthebuildertoun
发表于 5/27/2011 10:35:44 PM
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单片机控制诺基亚2600彩屏（九）
Step11TheCode-ForAVRStudio4(AVR),KeiluVision4(8051）IhavepostedexamplecodeforbothAVRand8051microcontrollersasIhaveusedtheLCDwithboth.ThecodewasoriginallywrittenforATMega168basedontheSparkFunexamplesforboththeLCDandArduinoLCDSh
发表于 5/25/2011 8:22:10 PM
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单片机控制诺基亚2600彩屏（八）
Step9DrawingOptimizationsWhendrawingmovingobjectsontheLCD,youcangreatlyspeeduptheframerateandeliminatescreenglitchesbyonlyredrawingthemovingpartsofanobjectratherthanredrawingtheentirescreenorentireobject.Forinstance,ifaballismovingacrosst
发表于 5/25/2011 8:16:14 PM
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单片机控制诺基亚2600彩屏（七）
Step7Text!AlthoughthisisagraphicalLCD,itisstillusefultobeabletoprinttexttoit.Unlikecharacter-basedLCDs,graphicalLCDsdonotcontainacharactermaporfonttableoranything.ToprinttexttoagraphicalLCD,youmustdefineyourownfonttableinyourcodeand
发表于 5/25/2011 8:08:59 PM
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