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THE AM BULLETIN BOARD => Technical Forum => Topic started by: N1XBM on March 19, 2021, 06:59:29 PM



Title: KiCad and footprints
Post by: N1XBM on March 19, 2021, 06:59:29 PM
I am trying my hand at making a PCB. I took a schematic the WA1QIX posted here in the forum a few days ago. I made up the schematic and when I went to make the PCB I got errors for every component letting my know I had not defined the footprint. That makes sense, is the part SMD, axial...etc. My question is I'd like to do something basic like a two layer board with the bottom side being the ground plane and use all thru hole parts.

Is there "generic" footprints for example an axial thru hole resistor? Or do I need to go thru and define each and every part?


Title: Re: KiCad and footprints
Post by: w9jsw on March 20, 2021, 07:09:47 AM
There is a footprint association app in the schematic editor that allows you to specify the footprint for every symbol. There are many of them. You need to know the size of the part and you can set the footprint appropriately. The app is to the right of the ladybug on the top line of the schematic editor. For R's there is a list of thru hole footprints, for example. Very few times have I had to make a new footprint.

Be careful on FETs. Sometimes the pin numbering will be different if you try to sub a FET and you will encounter the joy of throwing away a set of boards.

Feel free to send me an email if you have some more questions. I have been using Kicad for quite a few years.

John


Title: Re: KiCad and footprints
Post by: WA2SQQ on March 20, 2021, 08:12:48 AM
I’ve also tried this and ran into a problem where, when I print the board, I’m loosing one edge of the board. I’m told it has something to do with some sort of index or reference point which must be placed before beginning.


Title: Re: KiCad and footprints
Post by: w9jsw on March 20, 2021, 08:30:41 AM
I have never set an index point.

Have you defined a board edge that fully contains the board. If you zoom in is one corner not fully closed?
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