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Thank you. The symbol was wrong and is now fixed. I am using an 0.05 inch grid.

No, you can't ignore the warning as it means something isn't connected
as it should be.

It certainly used to be the case that all the supplied kicad symbols
were drawn using a US units grid.?? If that's still the case, then using
a metric grid will be problematic.?? Try switching to US units and using
a 0.05" grid, even if that requires gritted teeth.

Regards,

Robert.

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Thank you. The symbol was wrong and is now fixed.

It is telling you it is is not connected. This is a common problem if people design symbols with an inappropriate grid. Best is to use 1.27mm (0.05") for schematics and symbols.

You can select things, right click, and "align to grid" but that only works if the symbol and schematic grids are compatible (i.e. typically 0.05")

On 2024-09-06 9:40 a.m., John Woodgate via groups.io wrote:

I am getting warnings related to two pins of one symbol 'Symbol pin or wire end off connection grid', even if I set the grid to 0.1mm. Can I just ignore these warnings?

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It is telling you it is is not connected. This is a common problem if people design symbols with an inappropriate grid. Best is to use 1.27mm (0.05") for schematics and symbols.

You can select things, right click, and "align to grid" but that only works if the symbol and schematic grids are compatible (i.e. typically 0.05")

No, you can't ignore the warning as it means something isn't connected
as it should be.

It certainly used to be the case that all the supplied kicad symbols
were drawn using a US units grid. If that's still the case, then using
a metric grid will be problematic. Try switching to US units and using
a 0.05" grid, even if that requires gritted teeth.

Regards,

Robert.

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I am getting warnings related to two pins of one symbol 'Symbol pin or wire end off connection grid', even if I set the grid to 0.1mm. Can I just ignore these warnings?

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Thank you.

Hi, you can create as many electrical symbols as you want and associate a mechanical symbol.For the screw, create an electrical symbol yourself, add a connection PIN and associate it with the mounting hole. This way you can also give a signal to the screw

Il 31 ago 2024 00:27, John Woodgate <jmw@...> ha scritto:

Yes, thanks, Tony. I've found it, with much help.

On 2024-08-30 23:00, Tony Casey wrote:

There's a mounting hole in the standard Mechanical schematic library.

--

Regards,
Tony

On 30/08/2024 19:43, John Woodgate wrote:

But how do you add mounting holes to a schematic? It seems impossible to get to a Mounting hole library from the Schematic screen. Do they have to be added as pads, adjusted to have no copper?

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Yes, thanks, Tony. I've found it, with much help.

There's a mounting hole in the standard Mechanical schematic library.

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Regards,
Tony

On 30/08/2024 19:43, John Woodgate wrote:

But how do you add mounting holes to a schematic? It seems impossible to get to a Mounting hole library from the Schematic screen. Do they have to be added as pads, adjusted to have no copper?

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There's a mounting hole in the standard Mechanical schematic library.

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You are right, but I just didn't see the significance of that very short message, probably because it doesn't mention Schematic. screen.

In an email sent by meelis.reimets yesterday at 0415 it says "I have
mounting hole symbol in Mechanical library".

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In an email sent by meelis.reimets yesterday at 0415 it says "I have
mounting hole symbol in Mechanical library".

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In this case, I think I can say NO. The Mounting hole library is only accessible from the PCB screen. The Mechanical library is accessible from the Schematic screen.

But that's exactly what both myself and others said to do in earlier
emails!?? To quote myself, "there are loads to choose from in the
Mounting Hole library".

Regards,

Robert.

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But that's exactly what both myself and others said to do in earlier
emails! To quote myself, "there are loads to choose from in the
Mounting Hole library".

Regards,

Robert.

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THAT'S IT!! That's the key fact I've been looking for. Use the Mechanical library.? Merci beaucoup and then some!

I now use my owne library, however I think I used a symbol of the mechanical library as example:

?Regards, Jean-Paul

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Le 2024-08-30 à 20:18, John Woodgate a écrit?:

Yes, you did, and I am grateful for all help, but you wrote this:

Just add them to the schematic as symbols, as others have said.?

So, with the Schematic screen open, I look for symbols for mounting holes and I don't find them. Do you see that there is a single crucial piece of data missing? I'm beginning to deduce that they have to be added as pads, but until just now, I think that no-one has said so explicitly, and there is still a question whether that's the best, or the only, way to do it.

On 2024-08-30 18:51, Robert via groups.io wrote:

I answered that in my email sent at 11:50 ... and I've answered it
before, not so long ago.?? Additionally there may also be special
symbols in one of the supplied symbol libraries, but I stopped using
those long ago.

Regards,

Robert.

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On 30/08/2024 18:43, John Woodgate via groups.io wrote:

But how do you add mounting holes to a schematic? It seems impossible to
get to a Mounting hole library from the Schematic screen. Do they have
to be added as pads, adjusted to have no copper?

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I'm sorry that we are not communicating I think you know so much about the subject that you can't see the silly problems a beginner has.

No, the first two sentences say it's about adding mounting holes to the
schematic.?? I don't know how I can make it any simpler.?? I explained
how to add a mounting hole to the schematic, how to optionally assign it
a part number for the screw, how to assign it a footprint (there are
loads to choose from in the Mounting Hole library, as others have said,
or you can make your own in a few seconds), and that you could
optionally connect it to, for example, chassis ground in the schematic.
?Now when you go to the board layout and tell it to update from the
schematic, like any other component your mounting hole will appear,
ready for you to place it.

And /if/ you export the BOM, it will appear in the BOM.?? You don't have
to export the BOM, but it sure makes ordering components easier,
especially if you have the part numbers in it for the correct screws.

Regards,

Robert.

> That text seems to be about adding screws to the BOM. I suppose I
just don't get the implications of what you wrote.

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I now use my owne library, however I think I used a symbol of the mechanical library as example:

No, the first two sentences say it's about adding mounting holes to the
schematic. I don't know how I can make it any simpler. I explained
how to add a mounting hole to the schematic, how to optionally assign it
a part number for the screw, how to assign it a footprint (there are
loads to choose from in the Mounting Hole library, as others have said,
or you can make your own in a few seconds), and that you could
optionally connect it to, for example, chassis ground in the schematic.
Now when you go to the board layout and tell it to update from the
schematic, like any other component your mounting hole will appear,
ready for you to place it.

And /if/ you export the BOM, it will appear in the BOM. You don't have
to export the BOM, but it sure makes ordering components easier,
especially if you have the part numbers in it for the correct screws.

Regards,

Robert.

That text seems to be about adding screws to the BOM. I suppose I

just don't get the implications of what you wrote.

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That text seems to be about adding screws to the BOM. I suppose I just don't get the implications of what you wrote.

And the next three sentences tell you how to do that.

Regards,

Robert.

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On 30/08/2024 19:18, John Woodgate via groups.io wrote:

Yes, you did, and I am grateful for all help, but you wrote this:

/Just add them to the schematic as symbols, as others have said.
/

So, with the Schematic screen open, I look for symbols for mounting
holes and I don't find them. Do you see that there is a single crucial
piece of data missing? I'm beginning to deduce that they have to be
added as pads, but until just now, I think that no-one has said so
explicitly, and there is still a question whether that's the best, or
the only, way to do it.

On 2024-08-30 18:51, Robert via groups.io wrote:

I answered that in my email sent at 11:50 ... and I've answered it
before, not so long ago.?? Additionally there may also be special
symbols in one of the supplied symbol libraries, but I stopped using
those long ago.

Regards,

Robert.

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On 30/08/2024 18:43, John Woodgate via groups.io wrote:

But how do you add mounting holes to a schematic? It seems impossible to
get to a Mounting hole library from the Schematic screen. Do they have
to be added as pads, adjusted to have no copper?

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And the next three sentences tell you how to do that.

Regards,

Robert.

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Merci.

I always use pads with cooper. The pads may be connected to a net or not.
Regards, Jean-Paul

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Le 2024-08-30 à 19:43, John Woodgate a écrit?:

But how do you add mounting holes to a schematic? It seems impossible to get to a Mounting hole library from the Schematic screen. Do they have to be added as pads, adjusted to have no copper?

On 2024-08-30 18:11, Alan Pearce via groups.io wrote:

As you say, screws should be on the BOM, and the way to do this is add them to the schematic as mechanical parts, which have a footprint of a mounting hole. The mounting hole then gets automatically added to the footprints in the layout.

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