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I am new to KiCad, (I've used other cads in the past).
I am trying to set up a 4 layer board with the 2 internal layers set to power and ground and components on the F.Cu and B.Cu layers having some interconnections.
---I noted that when I accidentally forgot to set the copper zone on the inner planes it still passed DRC. Shouldn't this raise a flag? (I am certain to forget again in the future!!)
Thanks
Fritz

Hi Fritz,

Have you paid attention to the "List Unconnected" option? If all the pads of the schematic (or of the netlist if you create a netlist witout schematic) are connected, the DRC will not complain.
I understood you created the zones and didn't connect them to any track of the circuit.

Maybe you meant you didn't create the zones. The inner zones can be used for normal routing tracks too, or even left void. So the DRC doesn't see a violation of therules.

Regards,
Pedro.



El 13/12/19 a las 2:52, fritz escribió:

I am new to KiCad, (I've used other cads in the past).
I am trying to set up a 4 layer board with the 2 internal layers set to power and ground and components on the F.Cu and B.Cu layers having some interconnections.
---I noted that when I accidentally forgot to set the copper zone on the inner planes it still passed DRC. Shouldn't this raise a flag? (I am certain to forget again in the future!!)

Thanks
Fritz

Pedro
?? after pressing "run DRC" I get a 0 in "unconnected items". There is a "list unconnected" button but I assume the aforementioned action already has done this. At any rate if I press it nothing happens.
?? Here is what I have:
?????? some components which have pins associated with 3.3V and GND.
?????? two vias that are associated with 3.3V and GND
?????? connections of the mentioned pins to the appropriate vias
?????? No zones are defined yet.
?????? when I do the DRC check it does not raise and error saying something like "vias not connected to zone".
So I understand your last comment. I guess the vias can be left "floating" after all but this would be an error. I just have to be careful not to do this.
Thank you for your attention here-
Fritz
On 12/13/2019 2:26 AM, Pedro Martín via Groups.Io wrote:

Hi Fritz,

Have you paid attention to the "List Unconnected" option? If all the pads of the schematic (or of the netlist if you create a netlist witout schematic) are connected, the DRC will not complain.
I understood you created the zones and didn't connect them to any track of the circuit.

Maybe you meant you didn't create the zones. The inner zones can be used for normal routing tracks too, or even left void. So the DRC doesn't see a violation of therules.

Regards,
Pedro.



El 13/12/19 a las 2:52, fritz escribió:

I am new to KiCad, (I've used other cads in the past).
I am trying to set up a 4 layer board with the 2 internal layers set to power and ground and components on the F.Cu and B.Cu layers having some interconnections.
---I noted that when I accidentally forgot to set the copper zone on the inner planes it still passed DRC. Shouldn't this raise a flag? (I am certain to forget again in the future!!)

Thanks
Fritz

Hi Fritz,

Do all lines of the ratsnet dissapear?

I think the connecting part of the DRC doesn't mind if the nets are connected by vias, zones or tracks. It just check if all nets are connected.
The algorithm doesn't know if you want to connect a via to a zone or you want a via only to change layer and continue the routing on the new layer.

A floating via should raise an error if the net is not fully connected at other part of the layout.

If you want/can share your project I can take a look to it.

Cheers,
Pedro.



El 14/12/19 a las 15:36, fritz escribió:

Pedro
??? after pressing "run DRC" I get a 0 in "unconnected items". There is a "list unconnected" button but I assume the aforementioned action already has done this. At any rate if I press it nothing happens.
??? Here is what I have:
??????? some components which have pins associated with 3.3V and GND.
??????? two vias that are associated with 3.3V and GND
??????? connections of the mentioned pins to the appropriate vias
??????? No zones are defined yet.
??????? when I do the DRC check it does not raise and error saying something like "vias not connected to zone".

So I understand your last comment. I guess the vias can be left "floating" after all but this would be an error. I just have to be careful not to do this.

Thank you for your attention here-
Fritz

On 12/13/2019 2:26 AM, Pedro Martín via Groups.Io wrote:

Hi Fritz,

Have you paid attention to the "List Unconnected" option? If all the pads of the schematic (or of the netlist if you create a netlist witout schematic) are connected, the DRC will not complain.
I understood you created the zones and didn't connect them to any track of the circuit.

Maybe you meant you didn't create the zones. The inner zones can be used for normal routing tracks too, or even left void. So the DRC doesn't see a violation of therules.

Regards,
Pedro.



El 13/12/19 a las 2:52, fritz escribió:

I am new to KiCad, (I've used other cads in the past).
I am trying to set up a 4 layer board with the 2 internal layers set to power and ground and components on the F.Cu and B.Cu layers having some interconnections.
---I noted that when I accidentally forgot to set the copper zone on the inner planes it still passed DRC. Shouldn't this raise a flag? (I am certain to forget again in the future!!)

Thanks
Fritz

Thanks Pedro-
?? the ratsnest indeed disappears. So I think your comments make sense-there is no way for the program to predict if I was assuming a zone.
? ? I have attached a zip of the design (not a serious design! just for this test)
Cheers
Fritz
On 12/15/2019 4:52 AM, Pedro Martín via Groups.Io wrote:

Hi Fritz,

Do all lines of the ratsnet dissapear?

I think the connecting part of the DRC doesn't mind if the nets are connected by vias, zones or tracks. It just check if all nets are connected.
The algorithm doesn't know if you want to connect a via to a zone or you want a via only to change layer and continue the routing on the new layer.

A floating via should raise an error if the net is not fully connected at other part of the layout.

If you want/can share your project I can take a look to it.

Cheers,
Pedro.



El 14/12/19 a las 15:36, fritz escribió:

Pedro
??? after pressing "run DRC" I get a 0 in "unconnected items". There is a "list unconnected" button but I assume the aforementioned action already has done this. At any rate if I press it nothing happens.
??? Here is what I have:
??????? some components which have pins associated with 3.3V and GND.
??????? two vias that are associated with 3.3V and GND
??????? connections of the mentioned pins to the appropriate vias
??????? No zones are defined yet.
??????? when I do the DRC check it does not raise and error saying something like "vias not connected to zone".

So I understand your last comment. I guess the vias can be left "floating" after all but this would be an error. I just have to be careful not to do this.

Thank you for your attention here-
Fritz

On 12/13/2019 2:26 AM, Pedro Martín via Groups.Io wrote:

Hi Fritz,

Have you paid attention to the "List Unconnected" option? If all the pads of the schematic (or of the netlist if you create a netlist witout schematic) are connected, the DRC will not complain.
I understood you created the zones and didn't connect them to any track of the circuit.

Maybe you meant you didn't create the zones. The inner zones can be used for normal routing tracks too, or even left void. So the DRC doesn't see a violation of therules.

Regards,
Pedro.



El 13/12/19 a las 2:52, fritz escribió:

I am new to KiCad, (I've used other cads in the past).
I am trying to set up a 4 layer board with the 2 internal layers set to power and ground and components on the F.Cu and B.Cu layers having some interconnections.
---I noted that when I accidentally forgot to set the copper zone on the inner planes it still passed DRC. Shouldn't this raise a flag? (I am certain to forget again in the future!!)

Thanks
Fritz

Hi Fritz,

It is a very simple project. Even deleting the vias and their connected tracks there are no DRC errors since? all nets are connected and there aren't any clearance or overlap errors.

Cheers,
Pedro.



El 15/12/19 a las 15:11, fritz escribió:

Thanks Pedro-
??? the ratsnest indeed disappears. So I think your comments make sense-there is no way for the program to predict if I was assuming a zone.
?? ? I have attached a zip of the design (not a serious design! just for this test)
Cheers
Fritz

On 12/15/2019 4:52 AM, Pedro Martín via Groups.Io wrote:

Hi Fritz,

Do all lines of the ratsnet dissapear?

I think the connecting part of the DRC doesn't mind if the nets are connected by vias, zones or tracks. It just check if all nets are connected.
The algorithm doesn't know if you want to connect a via to a zone or you want a via only to change layer and continue the routing on the new layer.

A floating via should raise an error if the net is not fully connected at other part of the layout.

If you want/can share your project I can take a look to it.

Cheers,
Pedro.



El 14/12/19 a las 15:36, fritz escribió:

Pedro
??? after pressing "run DRC" I get a 0 in "unconnected items". There is a "list unconnected" button but I assume the aforementioned action already has done this. At any rate if I press it nothing happens.
??? Here is what I have:
??????? some components which have pins associated with 3.3V and GND.
??????? two vias that are associated with 3.3V and GND
??????? connections of the mentioned pins to the appropriate vias
??????? No zones are defined yet.
??????? when I do the DRC check it does not raise and error saying something like "vias not connected to zone".

So I understand your last comment. I guess the vias can be left "floating" after all but this would be an error. I just have to be careful not to do this.

Thank you for your attention here-
Fritz

On 12/13/2019 2:26 AM, Pedro Martín via Groups.Io wrote:

Hi Fritz,

Have you paid attention to the "List Unconnected" option? If all the pads of the schematic (or of the netlist if you create a netlist witout schematic) are connected, the DRC will not complain.
I understood you created the zones and didn't connect them to any track of the circuit.

Maybe you meant you didn't create the zones. The inner zones can be used for normal routing tracks too, or even left void. So the DRC doesn't see a violation of therules.

Regards,
Pedro.



El 13/12/19 a las 2:52, fritz escribió:

I am new to KiCad, (I've used other cads in the past).
I am trying to set up a 4 layer board with the 2 internal layers set to power and ground and components on the F.Cu and B.Cu layers having some interconnections.
---I noted that when I accidentally forgot to set the copper zone on the inner planes it still passed DRC. Shouldn't this raise a flag? (I am certain to forget again in the future!!)

Thanks
Fritz