LED星型发光时钟(一)
LEDStarBeamClockForthisdesign,somePiranhaRGBLEDsarepositionedaroundtheoutsideedgeofaclockthathangsonthewall.Theyareslightlyangledsotheirbeamswillcreateastarpatternagainstthewallasitcyclesthroughapprox16millioncolors.Iamusingac
发表于 2011/5/30 下午3:18:09
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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 2011/5/30 下午1:01:43
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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 2011/5/29 下午4:31:33
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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 2011/5/29 下午1:54:49
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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 2011/5/29 下午1:46:28
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简单DIY制作——分光计(七)
Step7SomeresultsMeasuringdyesAsafirsttest,Idecidedtomeasuresomesamplesoffoodcoloringandmethyleneblue.IdonthavealotofdatapointsbecausethesteppermotorImusingtakesratherbigsteps,resultinginratherbigwavelength-jumps.Also,becauseth
发表于 2011/5/28 下午8:39:30
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简单DIY制作——分光计(六)
Step6Letsmeasure!WorkinginthedarkBecausetheLDRreactstolight,youllhavetomakesuretoworkinasdarkanenvironmentaspossibletopreventanystraylightfromhittingthedetector.Youcouldputthewholedeviceinadarkbox,ordarkentheroomyoureworkingin.Blankmeasurements
发表于 2011/5/28 上午11:30:56
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简单DIY制作——分光计(五)
Step5DetectingthelightAmplificationcircuitTodetectthelightthatpassesthroughthesample,weregoingtouseanLDR,orLight-DependentResistor.Thoughitwouldbepossibletoobtainreadingsbyconnectinganohm-meterstraighttotheLDR,itprobablyisabetterideatocon
发表于 2011/5/28 上午11:26:49
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简单DIY制作——分光计(四)
Step4SelectingthewavelengthTheslitToaccuratelyselectaverysmallsectionofthespectrum,onewouldhavetomakeanextremelynarrowslit.Sincethisisveryhardtodoathome,Ichosetomaketwoslitsinsteadthatarenot100%aligned,soonlyaverynarrowbandoflightcanpassthrough
发表于 2011/5/28 上午11:20:11
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简单DIY制作——分光计(三)
Step3DiffractionSplittingthelightTobeabletoselectacertainwavelength(thecoloroflightdependsonitswavelength)wefirstneedtosplitthelightintoaspectrum.Thiscanbeaccomplishedbyadiffractiongrating.Sincemostpeopledonthavediffractiongratingslyingaroundth
发表于 2011/5/27 下午11:39:37
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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 2011/5/27 下午11:20:44
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简单的DIY制作——分光计(一)
AsimpleDIYspectrophotometerWhatsallthis?Thisinstructablewillexplainhowtobuildafairlybasicbutworkingspectrophotometeroutofeasilysourceableparts.Ofcourse,thisdeviceisnothingcomparedtoacommercialspectrophotometer,butitwillallowthebuildertoun
发表于 2011/5/27 下午10:35:44
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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 2011/5/25 下午8:22:10
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单片机控制诺基亚2600彩屏(八)
Step9DrawingOptimizationsWhendrawingmovingobjectsontheLCD,youcangreatlyspeeduptheframerateandeliminatescreenglitchesbyonlyredrawingthemovingpartsofanobjectratherthanredrawingtheentirescreenorentireobject.Forinstance,ifaballismovingacrosst
发表于 2011/5/25 下午8:16:14
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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 2011/5/25 下午8:08:59
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