How too link an existing schematic and pcb layout together?

Layout
1

Dear All

how do I link an existing schematic and pcb layout together?

I have both the PCB layout and the schematic but cannot update the schematic to the PCB layout.

Best Regards
Mejlby

link til PCB Layout
link til PCB Layout1261Ă—786 110 KB

2

Don’t use the standalone editors. Access them with the KiCad X.X program instead.

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  1. Create a project.
  2. Put your schematic and PCB file in it. (They both must have the same name as the project, or at least, this was mandatory some KiCad versions back)
  3. Make sure the references (RefDes) of the schematic symbol match those with the PCB.
  4. During: Schematic Editor / Tools / Update PCB from Schematic [F8] use: Re-link footprints to schematic symbols vased on their reference designators.

This last step should be done only once. After the initial linking has been performed, you should turn that checkbox off again. Then the normal method of using UUID’s (which are invisible to the normal user) are being used again.

4

Thank you very much for the answer - now it worked.

I am new to Kicad and have been working with it for approx. 14 days. I have another question:

When I finish a project and run DRC and see the “error” as shown in the attachment, does it matter if you can measure that the measurements fit the component?

I get the error message when I insert 3D

I have tried several times to download the model and insert the 3D but (step file) but then the error appears.

Will be glad if you or others can answer this.

Best Regards

Mejlby

Warning footprint dos not match libray
Warning footprint dos not match libray1512Ă—783 87 KB

egads

5

Congratulations. This forum software has a checkbox at the bottom of each post which you can use to mark the best answer as the solution, and marking it will help others finding the solution quicker.

image

This Warning: Footprint XXX does not match copy in library YYY is not a very important warning for most people. It is triggered just by a modification of the footprint, and adding a link to a 3D model is a modification of the footprint. The importance of this warning depends a lot on the detail in which you want to maintain libraries. If such details are not important to you, the easiest way is to simply right click on the error text and then choose one of the options to disable the warning.

If you not want to disable the warning, but still want to get rid of it, then you have to add the link to the 3D model in the footprint in the library itself, and then update the PCB to use the same footprint as which is in the library.

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Thanks …

How do i add the link to the 3D model in the footprint in the library itself, and then update the PCB to use the same footprint as which is in the library ?

is it in the KICAD library where all 3D files are located? or in the library where I downloaded the 3d file?

7

To modify the library symbol, open the Footprint Editor, then open the footprint, edit, and save it.

To update the footprint, go to the PCB editor, select and then edit a footprint, and click on Update Footprint from Library in the footprint properties.

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image962Ă—759 70.3 KB

As an alternative for the first step, you can also click on the Edit Library Footprint button 3 buttons downward from the Update Footprint from Library.

8

you are amazing !

What I have struggled with for many hours, you have now solved for me in 2 minutes

Thank you

/Mejlby

1 Like
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Other options are to read the manual or follow some tutorials.

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