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Consistency errors

maciv4

Well, its happened again. I have consistency errors. How do I resolve them. I have tried to delete the offending part from the schematic, both with the board open and closed. I have tried replacing the offending part with a new part from a brand new library. I have tried to delete the part from the schematic, close the schematic reopen the schematic and the board. I have airwires on the board but can't place or select the part. What do I try next?

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  • Thanks for the offer, but the board has long been deleted and a new board is under construction. I did manage to clear the errors I was having but in doing so I came up with 2 questions.

    Question 1:

    My DRC rules state that the pad diameter must be a min of 8mil.

    My part recomendation is a pad diameter of 8mil.

    I have built the part according to the manufacturers recomendation.

    Yet if you look at the part and the library side by side the rings of the part on the board are larger than the rings of the part in the library.

    Which one will be used in the gerber file, the library or the board representation?

     

    Question 2:

    My problem has been with Clearence errors between pins of the same part.

    The clearence of the pins according to the library is about 9mil, a fact that was confirmed by another member of this site.

    The clearence distance listed in the DRC file is 8mil.

    If I set this distance to 4mil, the errors go away. Isn't the distance from one point to another the same as the distance from another to the one?

    Why does eagle count both as different distances?

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  • Thanks for the offer, but the board has long been deleted and a new board is under construction. I did manage to clear the errors I was having but in doing so I came up with 2 questions.

    Question 1:

    My DRC rules state that the pad diameter must be a min of 8mil.

    My part recomendation is a pad diameter of 8mil.

    I have built the part according to the manufacturers recomendation.

    Yet if you look at the part and the library side by side the rings of the part on the board are larger than the rings of the part in the library.

    Which one will be used in the gerber file, the library or the board representation?

     

    Question 2:

    My problem has been with Clearence errors between pins of the same part.

    The clearence of the pins according to the library is about 9mil, a fact that was confirmed by another member of this site.

    The clearence distance listed in the DRC file is 8mil.

    If I set this distance to 4mil, the errors go away. Isn't the distance from one point to another the same as the distance from another to the one?

    Why does eagle count both as different distances?

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  • in reply to maciv4

    Jim McAuley wrote:

     

    Thanks for the offer, but the board has long been deleted and a new board is under construction. I did manage to clear the errors I was having but in doing so I came up with 2 questions.

    Question 1:

    My DRC rules state that the pad diameter must be a min of 8mil.

    My part recomendation is a pad diameter of 8mil.

    I have built the part according to the manufacturers recomendation.

    Yet if you look at the part and the library side by side the rings of the part on the board are larger than the rings of the part in the library.

    Which one will be used in the gerber file, the library or the board representation?

     

    Question 2:

    My problem has been with Clearence errors between pins of the same part.

    The clearence of the pins according to the library is about 9mil, a fact that was confirmed by another member of this site.

    The clearence distance listed in the DRC file is 8mil.

    If I set this distance to 4mil, the errors go away. Isn't the distance from one point to another the same as the distance from another to the one?

    Why does eagle count both as different distances?

    As has been stated by myself and confirmed by Jorge several times now, look at the Restring setting in the DRC. Jorge gave you a long and detailed explanation of this earlier this afternoon and it explains exactly what you are seeing with the change in pad size between the library and board. This change in pad size is why setting the DRC clearance rules to 4mil fixes the issue. Don't do that, change the resting setting as we've told you many times.

     

    Best Regards,

     

    Rachael