See:



in particular, the subsection 'Power Symbols'.

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Thanks all for help.

Place one after the switch as well. You could also just ignore the warning.

Reinier

Op 12-4-2024 om 15:31 schreef John Woodgate:

I have attached PWR_FLAG labels to my battery input terminals, but I still get a 'not driven' violation on the positive rail after the on-off switch, which is shown in the ON position. Is this normal, or have I got a hidden error in the schematic?

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John Woodgate, Rayleigh, Essex UK
Keep trying

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Place one after the switch as well. You could also just ignore the warning.

Reinier

Kicad doesn't know that switches have an "on" and and "off", so you have
to place the power flag downstream of the switch.

Regards,

Robert.

* Plain text email - safe, readable, inclusive. *

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Hard to visualize what you are saying but the pin has to be defined as power or passive I think.

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I have attached PWR_FLAG labels to my battery input terminals, but I still get a 'not driven' violation on the positive rail after the on-off switch, which is shown in the ON position. Is this normal, or have I got a hidden error in the schematic?

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Thanks, Reinier. I am probably odd, but I do not like video instructions. I will study the KiCad manuals and see if I can find the 5 mm preset pot for sale by those suppliers.

Creating a footprint is very similar to "normal" pcb design. There are probably tons of youtube video that will show you how to do it if you are afraid of trying yourself..
Or just start with an existing footprint, "save as" you new name (create your own library!), and modify pad position, dimensions etc. Designing or modifying footprints is really something a pcb designer should know.
By the way, big resellers like Mouser and Digikey have CAD models of their parts, also in KiCad format. Schematic symbols. footprints and 3D models.
Library management can be a bit difficult to master. You'll need to add your own library. I would suggest to use Onedrive of similar for you own libraries. That makes it very easy to keep libraries (and pcb designs) in sync between multiple computers.
Success, Reinier

Op 10-4-2024 om 20:21 schreef John Woodgate:

I rarely make printed boards, but I need to in this case. I am using version 8.01. I have identified footprints for all of the components except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing between the end pins and 5.08 mm spacing of the slider pin from the line of the end pins. The footprint library seems to be based on the user choosing parts from a very limited number of suppliers and knowing the exact part number. I can see no 'generic' footprints at all, but I seem to remember that earlier versions of KiCad had 'generic' footprints. Is the only solution to create a footprint?

--
OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

Virus-free.

开云体育

Creating a footprint is very similar to "normal" pcb design. There are probably tons of youtube video that will show you how to do it if you are afraid of trying yourself..
Or just start with an existing footprint, "save as" you new name (create your own library!), and modify pad position, dimensions etc. Designing or modifying footprints is really something a pcb designer should know.
By the way, big resellers like Mouser and Digikey have CAD models of their parts, also in KiCad format. Schematic symbols. footprints and 3D models.
Library management can be a bit difficult to master. You'll need to add your own library. I would suggest to use Onedrive of similar for you own libraries. That makes it very easy to keep libraries (and pcb designs) in sync between multiple computers.
Success, Reinier

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It's a 5 mm square preset. No room.

Part numbers are generally stamped into pots.

On 2024-04-10 5:10 p.m., John Woodgate wrote:

Thank you, but I don't think I can find the part number. I bought these parts quite a long time ago.

On 2024-04-10 19:31, brian wrote:

If you know the part number google search part number Kicad footprint. There are numerous websites which work with distributors, vendors, and so on to create symbols, footprints, and 3d models which you can download and import.

Usually pots are generic so odds are very high a pre-existing example is out there.

On 2024-04-10 2:21 p.m., John Woodgate wrote:

I rarely make printed boards, but I need to in this case. I am using version 8.01. I have identified footprints for all of the components except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing between the end pins and 5.08 mm spacing of the slider pin from the line of the end pins. The footprint library seems to be based on the user choosing parts from a very limited number of suppliers and knowing the exact part number. I can see no 'generic' footprints at all, but I seem to remember that earlier versions of KiCad had 'generic' footprints. Is the only solution to create a footprint?

--
OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

Virus-free.

--
OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

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Part numbers are generally stamped into pots.

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Thank you.

You may find some parts on a millimetre pitch (5 mm, 2 mm) rather than 
'inches converted to millimetres' (i.e. 0.1 inch as 2.54 mm).

On 4/10/2024 2:21 PM, John Woodgate wrote:

I do use a digital slide-gauge to measure parts. But you mention? '0.1 
inch': is there a new 'standard' pitch unit now?

On 2024-04-10 22:13, CW via groups.io wrote:

If they are older parts they are likely(?) to be on a 0.1 inch pitch
maybe. That, and a pair of calipers, would make it easy to make a
sufficiently good footprint, I'd suggest.

On 4/10/2024 2:10 PM, John Woodgate wrote:

Thank you, but I don't think I can find the part number. I bought these
parts quite a long time ago.

On 2024-04-10 19:31, brian wrote:

If you know the part number google search part number Kicad footprint.
There are numerous websites which work with distributors, vendors, and
so on to create symbols, footprints, and 3d models which you can
download and import.

Usually pots are generic so odds are very high a pre-existing example
is out there.



On 2024-04-10 2:21 p.m., John Woodgate wrote:

I rarely make printed boards, but I need to in this case. I am using
version 8.01. I have identified footprints for all of the components
except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing
between the end pins and 5.08 mm spacing of the slider pin from the
line of the end pins. The footprint library seems to be based on the
user choosing parts from a very limited number of suppliers and
knowing the exact part number. I can see no 'generic' footprints at
all, but I seem to remember that earlier versions of KiCad had
'generic' footprints. Is the only solution to create a footprint?

--
Signature OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

  	Virus-free.www.avg.com

<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

--
Signature OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

-- 
Signature OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

You may find some parts on a millimetre pitch (5 mm, 2 mm) rather than
'inches converted to millimetres' (i.e. 0.1 inch as 2.54 mm).

开云体育

I do use a digital slide-gauge to measure parts. But you mention? '0.1 inch': is there a new 'standard' pitch unit now?

If they are older parts they are likely(?) to be on a 0.1 inch pitch 
maybe. That, and a pair of calipers, would make it easy to make a 
sufficiently good footprint, I'd suggest.

On 4/10/2024 2:10 PM, John Woodgate wrote:

Thank you, but I don't think I can find the part number. I bought these 
parts quite a long time ago.

On 2024-04-10 19:31, brian wrote:

If you know the part number google search part number Kicad footprint. 
There are numerous websites which work with distributors, vendors, and 
so on to create symbols, footprints, and 3d models which you can 
download and import.

Usually pots are generic so odds are very high a pre-existing example 
is out there.



On 2024-04-10 2:21 p.m., John Woodgate wrote:

I rarely make printed boards, but I need to in this case. I am using 
version 8.01. I have identified footprints for all of the components 
except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing 
between the end pins and 5.08 mm spacing of the slider pin from the 
line of the end pins. The footprint library seems to be based on the 
user choosing parts from a very limited number of suppliers and 
knowing the exact part number. I can see no 'generic' footprints at 
all, but I seem to remember that earlier versions of KiCad had 
'generic' footprints. Is the only solution to create a footprint?

-- 
Signature OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

 	Virus-free.www.avg.com 

<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

-- 
Signature OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

If they are older parts they are likely(?) to be on a 0.1 inch pitch
maybe. That, and a pair of calipers, would make it easy to make a
sufficiently good footprint, I'd suggest.

开云体育

Thank you. I will study the creation process.

The preferred solution is to create your own footprint for the part you 
wish to use. Sometimes you can find an existing footprint that is close, 
save a copy of it in your personal footprint library, rename it as you 
desire, and modify it to be exactly what you need. The process, once 
understood, is not onerous.

On 4/10/2024 11:21 AM, John Woodgate wrote:

I rarely make printed boards, but I need to in this case. I am using 
version 8.01. I have identified footprints for all of the components 
except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing 
between the end pins and 5.08 mm spacing of the slider pin from the line 
of the end pins. The footprint library seems to be based on the user 
choosing parts from a very limited number of suppliers and knowing the 
exact part number. I can see no 'generic' footprints at all, but I seem 
to remember that earlier versions of KiCad had 'generic' footprints. Is 
the only solution to create a footprint?

-- 
Signature OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

	Virus-free.www.avg.com 

<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

开云体育

Thank you, but I don't think I can find the part number. I bought these parts quite a long time ago.

If you know the part number google search part number Kicad footprint. There are numerous websites which work with distributors, vendors, and so on to create symbols, footprints, and 3d models which you can download and import.

Usually pots are generic so odds are very high a pre-existing example is out there.

On 2024-04-10 2:21 p.m., John Woodgate wrote:

I rarely make printed boards, but I need to in this case. I am using version 8.01. I have identified footprints for all of the components except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing between the end pins and 5.08 mm spacing of the slider pin from the line of the end pins. The footprint library seems to be based on the user choosing parts from a very limited number of suppliers and knowing the exact part number. I can see no 'generic' footprints at all, but I seem to remember that earlier versions of KiCad had 'generic' footprints. Is the only solution to create a footprint?

--
OOO - Own Opinions Only
Best wishes
John Woodgate, Rayleigh, Essex UK
Keep trying

Virus-free.

开云体育

If you know the part number google search part number Kicad footprint. There are numerous websites which work with distributors, vendors, and so on to create symbols, footprints, and 3d models which you can download and import.

Usually pots are generic so odds are very high a pre-existing example is out there.

The preferred solution is to create your own footprint for the part you
wish to use. Sometimes you can find an existing footprint that is close,
save a copy of it in your personal footprint library, rename it as you
desire, and modify it to be exactly what you need. The process, once
understood, is not onerous.

开云体育

I rarely make printed boards, but I need to in this case. I am using version 8.01. I have identified footprints for all of the components except for a 1 kohm trimmer potentiometer. This has? 5.08 mm spacing between the end pins and 5.08 mm spacing of the slider pin from the line of the end pins. The footprint library seems to be based on the user choosing parts from a very limited number of suppliers and knowing the exact part number. I can see no 'generic' footprints at all, but I seem to remember that earlier versions of KiCad had 'generic' footprints. Is the only solution to create a footprint?