My first PCB with Eagle

Discussion in 'General Electronics Chat' started by MrChips, Dec 3, 2012.

  1. MrChips

    Thread Starter Moderator

    Oct 2, 2009
    I finally finished my PCB layout with Eagle for my ARM Cortex M4-based VGA board and submitted the files for fabrication last night.

    Got a response back from the PCB house that it does not meet their design rules.
    Did a Design Rules Check (DRC) and sure enough, my traces off the chip were too close, even with 10 mil traces.

    Turns out I used an SQFP package (0.4 mm pitch) instead of an LQFP package (0.5mm pitch). I would have been pretty mad with myself if they had gone ahead and printed the boards.

    Thank goodness for DRC.
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    Glad you caught it. One thing I have come to trust is when getting parts for the breadboard make sure at least 1 of everything is left over. Then when I lay out the PCB I'll print it out one to one scale, and "populate" the paper PCB with the real parts.

    A microscope helps see everything is going to be all right.
  3. JohnInTX


    Jun 26, 2012
    Glad you found it. You might find these useful as well: will find these for you before submitting.
    GC-Prevue is a free Gerber viewer that lets you inspect your layers as they would be plotted.

    I do that too, especially on a new component.
    Last edited: Dec 3, 2012