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.4mm to 2.54mm Routing

autodeskguest

I seem to be having a heck of a time getting the autorouter to route

between .4mm pitch 48 pin qfn smd and 2 x 2.54mm pth header strips.

 

https://dl.dropboxusercontent.com/u/2238318/esp32hb.zip

 

Any suggestions?

 

Glenn

 

Parents Reply Children
  • in reply to autodeskguest

    On 16/09/16 17:48, Glenn Jones wrote:

    On 9/16/2016 2:10 AM, Tilmann Reh wrote:

     

    Manual routing is the key to all autorouter problems.

    Seriously.

     

    Tilmann

     

     

    I was afraid you were going to say that image

     

    Why afraid? Manual routing - particularly of localised bits - is a lot

    easier than setting up the autorouting rules!

     

     

     

  • in reply to autodeskguest

    CadSoft Guest wrote:

    I was afraid you were going to say that

     

    Why afraid? Manual routing - particularly of localised bits - is a lot

    easier than setting up the autorouting rules!

    I agree, manually routing for the most part is much simpler, the autorouter isn't good enough or stable enough to be used for full on routing. For me I can cause it to abruptly exit within minutes of starting to use it, that's just not an acceptable level of stability for me.

     

    Back to the OP's question, I have downloaded the design and have confirmed that for no obvious reason it just won't route from the QFN to anywhere else. I don't know if this is something odd in the library part (I had a look but couldn't see anything) or something relating to the grid, etc. I couldn't see anything on keepout/restrict layers. Unfortunately I can't keep the autorouter open for long enough without crashing for me to do any in depth analysis of why it is not working.

     

    Manual routing of this is simple though if you rotate the IC by 45 degrees and move it down slightly and then all of the signals just flow nicely out to the connectors so not using the autorouter shouldn't be a big problem.

     

    Best Regards,

     

    Rachael

  • in reply to rachaelp

    On 9/17/2016 5:23 AM, rachaelp wrote:

    CadSoft Guest wrote:

    I was afraid you were going to say that

     

    Why afraid? Manual routing - particularly of localised bits - is a lot

    easier than setting up the autorouting rules!

    I agree, manually routing for the most part is much simpler, the autorouter isn't good enough or stable enough to be used for full on routing. For me I can cause it to abruptly exit within minutes of starting to use it, that's just not an acceptable level of stability for me.

     

    Back to the OP's question, I have downloaded the design and have confirmed that for no obvious reason it just won't route from the QFN to anywhere else. I don't know if this is something odd in the library part (I had a look but couldn't see anything) or something relating to the grid, etc. I couldn't see anything on keepout/restrict layers. Unfortunately I can't keep the autorouter open for long enough without crashing for me to do any in depth analysis of why it is not working.

     

    Manual routing of this is simple though if you rotate the IC by 45 degrees and move it down slightly and then all of the signals just flow nicely out to the connectors so not using the autorouter shouldn't be a big problem.

     

    Best Regards,

     

    Rachael

     

    --

    To view any images and attachments in this post, visit:

    https://www.element14.com/community/message/205878

     

     

    Hi Rachel, thanks for checking this for me.

     

    I use autorouting mostly for rough placement scenarios and sometimes for

    lazy simple routing like this.

     

    I did not created this library but did add an extra symbol and moved the

    pads on the footprint slightly as they were not lining up with the pad

    centers on .2mm grid spacing (which I thought was the original issue

    with it not routing) but it did not help.

     

    https://dl.dropboxusercontent.com/u/2238318/esp32.lbr

     

    Glenn

     

  • in reply to autodeskguest

    On 9/17/2016 8:52 AM, Glenn Jones wrote:

    On 9/17/2016 5:23 AM, rachaelp wrote:

    CadSoft Guest wrote:

    I was afraid you were going to say that

     

    Why afraid? Manual routing - particularly of localised bits - is a lot

    easier than setting up the autorouting rules!

    I agree, manually routing for the most part is much simpler, the

    autorouter isn't good enough or stable enough to be used for full on

    routing. For me I can cause it to abruptly exit within minutes of

    starting to use it, that's just not an acceptable level of stability

    for me.

     

    Back to the OP's question, I have downloaded the design and have

    confirmed that for no obvious reason it just won't route from the QFN

    to anywhere else. I don't know if this is something odd in the library

    part (I had a look but couldn't see anything) or something relating to

    the grid, etc. I couldn't see anything on keepout/restrict layers.

    Unfortunately I can't keep the autorouter open for long enough without

    crashing for me to do any in depth analysis of why it is not working.

     

    Manual routing of this is simple though if you rotate the IC by 45

    degrees and move it down slightly and then all of the signals just

    flow nicely out to the connectors so not using the autorouter

    shouldn't be a big problem.

     

    Best Regards,

     

    Rachael

     

    --

    To view any images and attachments in this post, visit:

    https://www.element14.com/community/message/205878

     

     

    Hi Rachel, thanks for checking this for me.

     

    I use autorouting mostly for rough placement scenarios and sometimes for

    lazy simple routing like this.

     

    I did not created this library but did add an extra symbol and moved the

    pads on the footprint slightly as they were not lining up with the pad

    centers on .2mm grid spacing (which I thought was the original issue

    with it not routing) but it did not help.

     

    https://dl.dropboxusercontent.com/u/2238318/esp32.lbr

     

    Glenn

     

    Hi Rachel,

     

    As Rene, indicated it was my default routing class specs that caused the

    routing not to work.

     

    Thanks for your help

     

    Glenn