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The following tutorial is presented for educational purposes only and no warranties are made as to its accuracy or reliability. It is protected by copyright and may not be distributed in any form without the express permission of the author – e-‐circuits ©

EXPORTING GERBER FILES FROM EAGLE

V1.1 – 09/2014

DESIGN RULES CHECK 1

GENERATING DRILL RACK FILE 2

GENERATING EXCELLON DRILL FILES 3

GENERATING GERBER FILES 4

SENDING GERBER FILES 11

KNOWN EAGLE FILE EXTENSIONS 12

Exporting Gerber files from Eagle

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Design Rules Check

Before proceeding to Gerber and NC Drill files generation, a DRC (Design Rules Check) must be performed in order to check your layout respects all the manufacturing constraints.

In Eagle, after having loaded your board file, select : Tools / DRC which will open a popup window.

• Click on “Load”

• Select your .DRU file (containing your Design Rules) • Click on “Open”

Your Design Rules will be loaded.

• Click on “Check”

NB: Correct all errors before proceeding to the next steps.



Generating Drill Rack File

In PCB view, select : File / Run ULP which will open a popup dialog.

• Select “drillcfg.ulp” from the list • Click ”Open” • Select ”inch” • Click ”OK”

• Click ”OK” in the Drill Configuration Dialog

Then, click ”Save” : Now you have the drill configuration file created.



Generating Excellon Drill Files

In PCB view, select : File / Cam Processor which will open a popup dialog.

• Select File / Open / Job

• Select “excellon.cam” • Click “Open” • On the Cam Processor window, Click “Process Job”



The file is created instantly.

• Close the Cam Processor Interface.

Generating Gerber Files

In PCB view, select : File / Cam Processor which will open a popup dialog.

• Select File / Open / Job



• Select the file “gerb274x.cam“ for 2 layer PCB or “gerb274x-4layer.cam“ for 4 layer PCB • Click “Open“

The new displayed interface should look like this :

It permits to define the generated Gerber files and which layout layer to include for each file. Each Gerber file is defined by a dedicated Tab and each Tab has to be filled precisely with the right section name, the right file extension and the right layers. NB: Mirror option must be unchecked for all the Tabs.



Create the following Tabs : Component Side (Top layer):

• Extension “%N.cmp“ • Selected Layers : “1 Top”, “17 Pads”, “18 Vias”

Solder Side (Bottom layer):

• Extension “%N.sol“ • Selected Layers : “16 Bottom”, “17 Pads”, “18 Vias”



Silk Screen CMP (Silk Screen Top):

• Extension “%N.plc“ • Selected Layers : “20 Dimensions”, “21 tPlace”, “25 tNames”

Silk Screen SOL (Silk Screen Bottom):

• Extension “%N.pls“ • Selected Layers : “20 Dimensions”, “22 bPlace”, “26 bNames”



Solder Mask CMP (Solder Mask Top):

• Extension “%N.stc“ • Selected Layers : “29 tStop”

Solder Mask SOL (Solder Mask Bottom):

• Extension “%N.sts“ • Selected Layers : “30 bStop”



Paste CMP (Paste Top) :

• Extension “%N.pmc“ • Selected Layers : “31 tCream”

Paste SOL (Paste Bottom) :

• Extension “%N.pms“ • Selected Layers : “32 bCream”



Border (Board Border / Cutting) :

• Extension “%N.gmb“ • Selected Layers : “20 Dimensions”, “46 Milling”

If your PCB has more than 2 copper layers, one tab per internal layer has to created :

• Extension “%N.loX“ : X being the internal layer number counting from Top to Bottom • Selected Layers : “xx Internal layer X”, “17 Pads”, “18 Vias”

Once all the previous Tabs created / correctly filled :

• Delete all other existing Tabs : Select them one by one and Click “Del” • Click “Process Job”

Once process job is terminated, close the CAM processor job window.



Sending Gerber Files

• Compress all the files in a single .zip file. Before sending your files, make sure they all are is positive mode.



Known Eagle File extensions

File Extension Corresponding Layer .drl Drill Rack data .drd Excellon Drill description .dri Excellon Drill tool description

.cmp Top layer .sol Bottom layer .plc Silk Screen Top .pls Silk Screen Bottom .stc Solder Mask Top .sts Solder Mask Bottom

.pmc Paste Top

.pms Paste Bottom .lo1 Internal layer 1 .lo2 Internal layer 2

.gmb Mechanical 1 / Board Border / Cutting .gpi Photoplotter information

exporting gerber files from eagle - e-circuits · pdf fileexporting gerber files from eagle...

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