KiCad help - micro via

Discussion in 'General Electronics Chat' started by bug13, Jul 11, 2013.

  1. bug13

    Thread Starter Well-Known Member

    Feb 13, 2012
    1,208
    38
    Hi guys

    I am learning KiCad today, and the help menu say micro via is "Ctrl + V", but when I pressed "Ctrl + V", I got nothing.

    So how do I place a micro via?

    Thanks
     
  2. bug13

    Thread Starter Well-Known Member

    Feb 13, 2012
    1,208
    38
    I got it, I need to enable the micro via option :)
     
  3. bug13

    Thread Starter Well-Known Member

    Feb 13, 2012
    1,208
    38
    Oh no, I still can't do micro via after I enable the option. any thought??
     
    Last edited: Jul 11, 2013
  4. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,386
    1,605
    As a Kicad user and supporter I took it as a point of honor to figure this out, even though I have not nor intent to use a micro-via in my work.

    A micro via or micro-via or microvia (I've seen it all ways) is a very small (LDO) (.1mm/.004inch typical) connection is a multilayer board. A hole is cut using a laser or (other very controllable process) between an outer layer and the layer directly below it. The prepreg board thickness needs to be of the order of the micro-via diameter so the technique is limited to multilayer boards.

    With this limitation enabling micro-vias in Kicad takes two steps. From the menu click:

    Design Rules | Design Rules: Global Design Rules tab click "Allow micro vias."

    Design Rules | Layer Setup: increase Copper Layers to greater then 2.

    Once you do these steps when drawing a trace you can press V to place a via, and CTRT-V to place a micro-via.

    (This took me a while as I am breaking in a new computer and had to download Kicad into this machine. Sorry for the delay but I kept your post up till I got this.)
     
  5. bug13

    Thread Starter Well-Known Member

    Feb 13, 2012
    1,208
    38
    Hi ErnieM

    Thank you for taking the time to find these out for me, it looks like I am poking on something I have no idea of. (I am justing assuming micro via is just a via but smaller, and I can use it just like a normal via)

    I was doing it on a simply 2 layers board and of course it doesn't work.

    KiCad is great btw, after trying Eagle, Design Spark and Altium (this is great too but too expensive).
     
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