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    EAGLE 3D TUTORIAL

    Eagle3D CAD

    Want to make pretty 3D images of your circuits?
    . . . while simply using your already designed 2D Eagle board files?

    I thought so. Enjoy my Eagle3D tutorial!

    Preface on Eagle
    For those still in the dark ages, Eagle CAD is a automated software design tool to create professional PCB circuits.

    CadSoft Online

    I have no plans as of the moment to write a tutorial on how to use Eagle, as there are already quite a few tutorials on the web:


    Instructables Eagle tutorial 1
    Instructables Eagle tutorial 2
    University of Florida Eagle tutorial
    Sparkfun Eagle library
    Creating Eagle Parts Tutorial
    Eagle Export Tutorial

    After you have designed your circuit, you would probably next want to view the propagated PCB in 3D for both verification and cool-looking presentations. This is where we will start.

    Eagle3D
    When I first started using Eagle3D, it quickly became apparent that the documentation seemed to have forgotten that whole 'how do I use the software?' bit . . . I wasted several hours trying to figure it out . . . And I'm sure many others have as well . . .

    But thankfully you have this tutorial, so it should only take you about 10 minutes =)


    Step 1
    Download the Eagle3D software (1.6mb). Install the software using the installer. I installed it here:
    C:\Program Files\Eagle3D
    but it doesn't actually matter where.


    Step 2
    Open up your board file in Eagle. In the command bar, type 'run':

    Eagle3D type run

    A new window will come up asking you to find a .ulp file. Browse into your Eagle3D directory (where you installed it) and select the file 3d41.ulp. Now select your language, and then browse for the output file (it will only ask you this once).


    Step 3
    Next, a new window will now pop up:

    Eagle3D create POV file

    There are tons of options here, such as shadowing, camera angles, lighting, coloring, etc. Don't worry about them for now - the defaults will give you decent results. But you may want to play around with it in the future to get that 'perfect' look.

    A highly suggested modification would be to rotate the board some. I like to change the Y:

    Eagle3D change view angle

    Click create POV-File. This will take a few seconds to process. There is a good chance it will ask you various questions about your board components - answer as best you can.

    After processing is complete, you will now have a .pov file. You are halfway done!

    Now you need a post-processor to convert that .pov into a pretty picture . . .


    Step 4
    Install the 32-bit version POV-Ray (9.7mb) software. If you want more information on this impressive software, feel free to visit the POV-Ray website.

    Install the software, and load it up. Click on the Open file icon, and locate your .pov file created in the previous step:

    POV-Ray and Eagle3D


    Step 5
    We need to point POV-Ray to the .inc files for Eagle3D. These files define the 3D electronics components that will propagate your PCB.

    Click Tools -> Edit master POVRAY.INI

    A notepad file should load up. At the very bottom of it, add this line:

    Library_Path="C:\Program Files\Eagle3D\povray"

    Make sure the directory points to where you installed Eagle3D. Now save and close the file.



    Step 6
    In POV-Ray, click the Ini icon so that we can select an image size. The larger the image, the longer the processing time. When designing the board I like to use a low resolution, but when I have the final product I'll do the maximum size. The max size on my laptop takes less than 5 minutes to process, not too long - but it really depends on how complex the board is.

    Eagle3D Render

    Use the section: drop-down menu to select your preferred size. Including AA will give you smoother better looking images, but will also double the processing time. (see below for an example)

    When you are all ready to go, push the Render button. Immediately this 'error' message will pop-up. Just push OK and ignore it. It won't happen again.

    Eagle3D error


    Step 7
    Now if you did everything right, an image should pop up and slowly propagate:

    Eagle3D without AA
    (jagged edges without AA)

    Eagle3D with AA
    (better quality with AA)

    Feel free to change the camera angle and image sizes.


    Adding Components to Eagle3D, Step 8
    Now chances are not all components have shown up on the board. This is where it gets tricky and so I'll do my best to help you out. There is also a good (bad?) chance you will have to do a little programming, too.

    First, click the Open file button in POV-Ray. Locate and open the file user.inc in the Eagle3D\povray folder.

    Next, click Open again, and change Files of type: to All Files (*.*). Locate and open the file 3dusrpac.dat in your Eagle3D folder.

    By default, both of these files should be blank.


    Step 9
    In the file 3dusrpac.dat, add this as ONE line:
    PACKAGE_NAME:0:1:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:MACRO_NAME(::

    Now we need to change PACKAGE_NAME and MACRO_NAME to actual values.

    To find the PACKAGE_NAME, first go back to your schematic page on Eagle, click the info button, then click a component that is missing in the 3D image:

    Eagle3D Package info

    Replace PACKAGE_NAME with the Package variable. In this case it is SD4-01. Note that this is always in caps!





    Step 10
    Next, we need to find a MACRO_NAME to match your missing part as closely as possible.

    First you need to locate a part that looks like what you need (or close to it). Download the Eagle3D image library (36mb) and unzip it into a folder. Set the folder options to thumbnail view so you can see them all. Locate a matching component (or as close as possible), and copy the file name onto your clipboard (minus the .png file extension).

    Lets say hypothetically you choose CON_DIS_MATNLOK_9263_13_1 which looks something like this:

    Eagle3D part

    Once again, using the Open dialog in POV-Ray, go into your Eagle3D\povray and locate the file connector.inc because you needed a connector. If you needed a switch instead, you would use switch.inc. Etc.

    Search the connector.inc file for the part name. You will find this:

    #macro CON_DIS_MATNLOK_9263_13_1()
    object{CON_DIS_MATNLOK_9263_GRND(5,1)}
    #end
    

    Copy this code exactly and paste it in the user.inc you opened earlier. You will need to add the word value in the parenthesis and the union{} thing:

    #macro CON_DIS_MATNLOK_9263_13_1(value)
      union{
      object{CON_DIS_MATNLOK_9263_GRND(5,1)}
      }
    
    #end

    Now back to the 3dusrpac.dat, replace MACRO_NAME with CON_DIS_MATNLOK_9263_13_1 to get this:
    SD4-01:0:1:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:CON_DIS_MATNLOK_9263_13_1(::

    Now go back to the beginning of this tutorial, recreate the .pov file, and render your image again. If you did everything right, your new component should appear.

    Just say Yes, Reload in POV-Ray:

    Eagle3D reload pov


    Step 11 - The hard step!!!
    Now suppose the selected component isn't exactly the right dimensions . . . well now you are asking to modify the program for that component found in connector.inc. Programming is outside the scope of this tutorial, but feel free to check out this POV-Ray Tutorial.

    Now I'm definitely no professional programmer, but I will tell you it took me only about two hours of brain frying (guessing until it worked) to create my first part. And I didn't use the tutorial. Play with it for a bit and you will figure it out. Basically all you are doing is defining color, texture, and coordinates of basic shapes.

    Oh, and you will probably notice that the source code has a lot of German in it. So if you are awesome like me and can't read German, translate it!

    One hint of useful advice. You may notice that your components placed on the PCB are rotated or translated wrong. Easily solved. For our earlier example, in the connector.inc file locate the macro and right before the #end add these lines:

    //add numbers in millimeters to translate the part
     translate <0,0,0> 
    //add angles to rotate the part
     rotate <0,0,0>
    

    Now for those who don't want to bother programming and have a CAD program, see step 12.


    Step 12 - Convert a 3D CAD .stl file to .pov (Optional)
    Suppose you don't want to bother programming to create shapes in .pov, and instead just want to convert you CAD files (from another program) into .pov code. This can potentially save tons of time!

    First, using your preferred CAD program, save your CAD file as a .stl. This file type is an industry standard.

    Next, download this small .stl to .pov conversion utility. For more info and source code, feel free to check out the stl2pov homepage. Unzip the file.

    Next, open up a command prompt window (click start->Run..., then type 'cmd', push OK):

    run command prompt

    Go in to the stl2pov directory:

    run command prompt

    Then type 'stl2pov input.stl >output.inc', where input is the name of your .stl file and output is the desired output pov file. Optionally, you can also type 'stl2pov input.stl|more' for more stuff. Push enter.

    note: in v3.0, do not use the > character.

    Wait until its done. You now have a .inc file you can use with any macro. Just make sure that its included:

    Go back to Step 5 to add this line in POVRAY.INI:
    Library_Path="C:\Documents and Settings\Pika\Desktop\stl2pov-2.4.0"
    (wherever the output.inc file is)

    To view your new file and/or to include it, load up POVRay, select the New icon, and paste this code into it:

    #include "output.inc"
    
    background {color rgb 1}
    
    light_source {<-100,1000,-1000> rgb 1}
    global_settings { 
      assumed_gamma 2
    }
    
    camera {
      orthographic
      location <10,10,-10> scale 0.2
      look_at <2,0,2>
    }
    
    object {
      m_ascii
      texture {
        pigment {color <1,0,0>}
        finish {phong 0.5}
      }
    }
    

    Save this new DrawSTL.pov file wherever.

    Now just Render it as described in Step 6 and higher.

    To add it to your PCB, in user.inc add this:

    //custom CAD STL
    #macro MICRO_SD_GRND(value)
            union {
            #include "output.inc"
            
            object {
                    m_ascii
                    
                    //texture{col_silver}
                    
                    texture
                      {
                      pigment {color <1,1,<1,1,1>}
                      finish {phong 0.5}
                      }
                   }   
            translate <-14,15,-2> 
            rotate <90,0,0>  
            }
    #end
    
    #macro MICRO_SD(value)
    object{MICRO_SD_GRND(value)}
    #end  
    


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