Hi all I am new to Kicad and I am working on my first PCB layout using this software. In Pcbnew when I select a pin of my D-Sub 50 pin connector it selects the whole connector. For instance I would like to select pin 3 edit the properties and tell it to bind that pin to layer # 3 which is my ground plane. I would do this routinely on Mentor Pads but can’t figure it out how on Kicad Pcbnew. I am using Ver 5.1.5
Ground planes are added by use of zones not via some layer property. Connecting to that zone is done via the connectivity information that you get from the schematic (by use of the net name of both the pad and the zone).
If the pad is a smd pad then you will need to use a via to connect to a zone on a different layer.
Hi, thanks for the reply. I did create the ground plane already but can not associate the ground plane to the appropriate pin numbers on the connector. When I try to select a pin number the whole connector is selected.
I assume the symbol that represents your connector has the pins in question connected to the ground net. I further assume that the zone is connected to that ground net in pcbnew. There is then no need to touch the pad properties as this is all that is required to create a connection.
Of course if the zone is on a layer that is not present in the pad then you will need to use a via as explained above. Also be aware that zones have their own clearance settings so it could be that the connection is just not made because the zones clearance is set too high.
Maybe a screenshot of your connector would clarify your problem.
Also, I do not see the design flow of “editing the properties of a pad” to connect it to a GND layer.
Normally when drawing the schematic (in Eeschema) it generates a netlist, which already has that information in it.
Then in PcbNew you draw a “Zone” and you assign that zone to one of the nets in your netlist. This is probably the step you missed.
This is very strange now Pcbnew is behaving as I was expecting it to and I can select individual pins for my connector. The issue was that I could not select individual pins, whenever I clicked on a pin it would highlight the whole connector. However now it is working correctly.
Assigning nets in pcbnew is not really a good idea. The schematic is the documentation of your product, assigning or worse changing net assignments in pcbnew will make the documentation invalid. And the technical reason is that the next update from the schematic will simply remove that info. @MichelleG stated that they have a schematic so there is no reason at all to do it in the pcb. (I mean yes it is possible but why not do it in a future proof way?)
Ok, so here is a screen-capture of the board I am designing. The purple layer is the ground plane which is selected here. As you can see the net is GND and you can see pin 14, 31, 48 are GND but pin 31 even though is assigned to the GND net it looks like its floating. So my question here is how do I connect pin 31 to the GND plane?
And to add a small detail, the ability to assign a net to a pad is probably a side effect of a D_PAD being of type “BOARD_CONNECTED_ITEM”. TRACKs (and VIAs, a type of TRACK) are also BOARD_CONNECTED_ITEMs, as are as ZONE_CONTAINERS, and those do need the ability of assigning nets.