2010 08 22 how to make own eagle library

8/2/2019 2010 08 22 How to Make Own Eagle Library

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HowToMakeOwnEagleLibrary

22nd

August,2010

WrittenbyCholisSafrudinYD1CHS

http://yd1chs.wordpress.com

OneofmyfavouritePCBdesignersoftwareisEAGLE(EasilyApplicableGraphicalLayoutEditor),

since it is free, easy to be used and satisfies my need. You can download it at

http://www.cadsoft.de/

Usingthissoftware is fullofjoy,butsometimeweexperienceaconditionwherewecouldnt

find any specific symbol at the existing EAGLEs library, for example a single gang plastic

variable capacitor (varco). This component usually is used at old broadcasting single band

receiver.Here,Iwouldliketosharemyexperiencetocreateanewsymbolandadding itinto

EAGLEslibrary.

Firstofall,itisneededtodeterminesizeandshapeofthenewcomponent.Inthiscase,letus

useaoldplastic singlegangvariable capacitor (varco) forexample.Thevarcohas rectangle

shape,eachsidesized1 inch.Ithas3pins,thecenterpin isacommonpin.Thecentrepin is

placed atmiddlepositionofone side,meanwhileeachotherpins seperatedabout0.5 inch

from thecentrepin.Rotator is laid in thecentreof rectangle.Both sideshas smallhole for

mountingscrewdriver.Untilnow,wehavehadacompletepictureofournewcomponent.You

maydrawitintoapieceofpapertoassistduringdrawing.Theprocedureisquitesimple,they

areasfollowed:

1.Creating

a

new

library

2. Creatinganewpackage3. Creatinganewsymbol4. Creatinganewdevicebyconnectingbetweennewsymbolandnewpackage

Thisstepbystepprocedureguideyoutocreateanewsymbolandsaveitintoanewlibrary.

Step1:CreateANewLibrary

Open theEAGLEsoftware,createanew librarybyclickingFILE>NEW>LIBRARY,save itby

clickingFILE>SAVEASandnameitasyouwish.Inthisexample,Inameitbylibrary_ku.

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Figure1CreateANewLibrary

Figure2SaveIt

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Figure3NameandPlaceIt

Nowwehaveanew librarynamedlibrary_ku.Youcancheck itsappearanceon theEAGLE

default library folder named lbr,which is appeared as library_ku.lbr. This library is still

emptyand

we

have

to

fill

it

with

one

or

several

symbols.

Step2:CreateANewPackage

Beforewe create symbol,we need to digitalizing shapeofour new component into a new

package.Thispackagewillbeusedbyoursymboljustlikeamask,sothat,asymbolcanhave

severalpackages.Tocreateanewpackage,pleasefollowstepbystepprocedurebelow.

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Figure4OpenEditWindowandNameforANewPackage

Figure5SaveTheNewPackage

Figure6ChoosePADToDrawPackage

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Figure7DrawANewPackageforVarcoWithRealDimension

Usetoolrectangle,line,etctodrawthepackage.Pleasepayattentiononitsdimensionper

division,since

it

determines

real

dimension

of

the

package.

In

the

package

window,

there

is

ahaircross,itindicatescenterpositionofthepackage.Youcanputitfreelyasyouwish.Iloveto

putitatthepackagecorner.

Letexaminethepackageabove.Theshapeshownisbottomside.Eachsideoftherectangleis

20divisionor20*0.05inch=1inch.Ithasthreepins(greencolor),onerotatorandtwoscrew

driverholes.Drawthemallinthepackagewindow.

Nowournewpackagehasfinished,nextstepiscreatinganewsymbolandlinksittothisnew

package.

Step3:CreateANewSymbol

Now isatimetocreateournewsymbol.Youcancreateasspecificsymbolasyou like,but I

recommendyoutodrawitasageneralknownsymbol,sothatotherusercanidentifyiteasily.

Hereistheprocedure.

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Figure8NameOurNewSymbol

Figure9CreateANewSymbol

Figure10DrawAVarcoSymbol

Figure11DetermineEachPinUsingMenuBelow

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Pay attention during determine each pin on the varco symbol. Their arrangements will be

correlatedwiththeirrealposition.Letseethesymbolabove,Isetthe1stpinformostleftpin

P$1,then2nd

pinforP$2andfinallythemostrightpinasthe3rd

pinP$3.Soon,youwillseeits

correlationwhenweconnecteverypinbetweensymbolandpackageonthenextstep.

Now,oursymbolhasfinished.Next,wewillcreateanewdevicebyconnectingoursymboland

ourpackage

before

we

use

it

into

our

PCB.

Step4:CreateANewDevicebyConnectingBetweenNewSymbolandNewPackage

Thisstepisakeyofalldevicecreation.WecannotuseournewsymbolforourPCBbeforelink

itwithitsappropriatepackage.Hereistheprocedure.

Figure12OpenWindowandCreateandNameANewDevice

Figure13SaveOurNewDevice

Figure14ClickNewButton

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Figure15ChooseAnAppropriatePackageInthiscaseisVARCO_PACKET

Figure16

The

Package

is

Now

Appeared

On

The

Device

Window

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Figure17ChooseSymbolfortheChoosedPackageUsingButtonBelow

Figure18ChooseAppropriateSymbolforChoosenPacket

Figure19OurVarcoSymbolWillbeAppearedOnTheWindow

Figure20ClickMenuConnectToConnectEachPinBetweenSymbolandPackage

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Figure21ConnectEachPin(Symbol)withEachPad(Package)

Figure22AllPinsHaveBeenConnectedToAllAppropriatedPad

Finally,clickbuttonOKanddevicecreationprocesshasfinished.Now,thedevicehasbeen

readytobeuseforourPCB.

Inorder

to

use

our

new

device

into

our

PCB

design,

the

EAGLE

software

should

be

shut

down

previously.Justcloseitdownandopenupagain.Youcanfindournewlibraryinthedirectory

lbr,asfollowed.

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Figure23FindOurNewLibraryInThelbrDirectory

Figure24DoubleClickTheLibrarylibrary_ku.lbr,Device,SymbolandPackageWillBeShown

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Figure25ThisisAppearanceOfOurNewSymbol

Figure26ThisOurPackageLookedOntheBoard(PCB)

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Ihaveexplained stepbystepprocedures to createanew library intoourEAGLE.Thereare

many other tricks and tips we can be applied to enhance our PCB creation as well as its

production.ThefollowingpicturesaresummaryofallstepIhavebeenexplainedbefore.

CREATINGANEWLIBRARY

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EVALUATINGOURNEWLIBRARY

[]EndofPageYD1CHS

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2010 08 22 how to make own eagle library

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