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Jorge_Garcia

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Jorge Garcia

I'm a young engineer with extensive experience working on EAGLE. My interests include Power Supply design and LED solid state lighting, and I'm always impressed by a well designed PCB.

 

 

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  • I'm doing a layout that has a circular array of LEDs packed tightly together in an approximately 320 degree circle.  Based on the size of the board (really small) and the number of LEDs (really large), there is a need for precision device placement.  I use a script to place the LEDs exactly where they need to be.  All the LEDs origins are centered on a circle.  I've got the syntax for device placement, radial orientation, and rotation mastered.

     

    The script works fine for placing the LEDs in their appropriate position and that hasn't presented a problem.However, there's one thing that I have not been able to discover by reading the Eagle documentation nor by experimentation.  I need to be able to orient the LED cathodes so that they are all pointing radially inward.  Is there any way to force device orientation (i.e. make certain that it's the LED cathodes and not the anodes that point radially inward) based on pad or pin name or some other attribute?

     

    I've been able to accomplish this by "pre-orienting" all the LEDs on an unrouted area of the board and then run the script.  What I mean by this is that I'll manually move all the LEDs to some arbitrary area of the board and orient them so that their cathodes all point to the right and then run the script.  The script places the LEDs exactly where they need to be with the desired cathode orientation.  If I flipped the LEDs so that the cathodes all pointed left during my "pre-orienting", the cathodes all wind up facing radially outward.  So, the device placement rules are at least consistent.  However, this is a pretty kludgy way to accomplish something I'd like to be able to do entirely via script.

     

    Is there a way to do this via script?

  • in reply to billkru

    I need to be able to orient the LED cathodes so that they are all pointing radially inward.

    Use the R option to specify orientation.

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