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  • Altium many off grid warnings

    Hi
    i have imported a pads project to altium, i have built my schlib from it.
    A few off grid problems appeared and I solved them.
    The next day ,There were a lot of off grid problems for all the components that were almost unresolved.
    No matter how much I changed the grid, Align to grid, checked the parts again, it did not work.
    out of frustration, I selected all the parts and aligned them to the grid. Failed.
    i closed the sch and reopened and suddenly it resolved.

    after exiting altium and opening the project it appeared again.

    any ideas? Click image for larger version

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  • #2
    Normally, schematics are done in 100mil possibly 50mil grid. It looks like you are using MM grid in schematic - that can cause a lot of problems.

    Comment


    • #3
      In schematic you can select everything and go to Edit / Align / Align to grid.

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      • qdrives
        qdrives commented
        Editing a comment
        It is dangerous if you think Altium does it perfect.
        If the original had mm grid and in Altium it is 100 mil, using the align to grid will move things to the nearest grid. This can cause "short circuits"
        It works 95% good if the import was stupid. Original was at 100mil grid, Altium 100mil grid, but importer placed it on 33mil position??? I had that with an Eagle import. Now if you select align to grid, most of the things just move to the same direction. However, I will not guarantee correctness, so you do have to check it afterwards.

      • WhoKnewKnows
        WhoKnewKnows commented
        Editing a comment
        Ah, dangerous if the user doesn't checkpoint their work? Does undo not undo? I guess whatever is implied by dangerous is also relative and subject to interpretation

      • M. Namvar
        M. Namvar commented
        Editing a comment
        There is no problem in selecting each component and aligning it with the eyes open .

        one by one and not everything together.

        i mean that.

    • #4
      I solve it.

      For anyone with this problem I suggest:

      1-As Robert said,change grid to 50 or 100 mil grid.
      2-run validate(compile) project again.
      3-Pay attention to the change of units in Messages Panel from mm to mils.
      4-if not changed ,go to schematic properties and set unit to mm and then again mils.
      5--run validate(compile)project again.
      6-again ,Pay attention to the change of units in Messages Panel from mm to mils!
      7-align to grid the remaining components, in 50 mils or 100 mils (depended on your choice and component design in schlib).
      8-run validate(compile)project again.
      9-if the problem exists, you must check the components in schlib,pay attention to pin location (in 50 or 100 mil ).correct them ,save, update schematics pages.
      10-run validate(compile)project again.
      11-if the problem exists,you can delete and re-place the component.
      12-run validate(compile)project again.
      13-repeat the above step 7-12 again for other components.

      Some uncommon suggestion:

      1-save and close schlib and sch even if they already saved.
      2-delete or move a component or power port.

      I hope you do not get caught up in this.



      Comment


      • qdrives
        qdrives commented
        Editing a comment
        Exactly, 12 steps! I too had much trouble getting it on grid. Snapping/centre prosition, etc in Altium
        The only solution is the align to grid. This can be done on everything or individual symbols.
        The pins must be on grid, so the symbol in the library has to be correct to begin with.

    • #5
      For single pin schematic items like ports, the user can correct the coordinates of the item in the properties panel. If the schematic uses a 50 mil grid, typically, they'll have to adjust the numeric value to the nearest 50 mils value.

      Comment


      • #6
        Please explain how align to grid command is dangerous?

        Comment


        • M. Namvar
          M. Namvar commented
          Editing a comment
          There is no problem in selecting each component and aligning it with the eyes open .

          one by one and not everything together.

          i mean that.
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