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I want to make a symbol for a bus bar that I will use for an upcoming project. Will the following approach work?
What I want to make is a copper strip approx 6.5" long x 0.5" wide that includes 96, 0.040" dia plated holes on a 0.1" x 0.2" spacing grid.
The copper is to be on each layer (for now assume 6 layers) and the holes are to be plated thru and flooded to each layer.
In the symbol editor, I have made the array of holes and put a static solid filled shape around them on each layer. Each hole shows a "pad to shape" DRC which I would expect at this point. When I bring this symbol into the board and edit the shape to attach it to the net, will these DRC's go away? I woud expect to have to assign the net to each layer shape... Correct?
Will this approach work, or am I dreaming......................
Dave Elder, Tait Communications
In reply to eDave:
Not quite sure where you are going with that. I'd like to make it a library symbol so I can easily reuse it. I have been playing with it most of the day and I am really not making any progress.
I have used the pad array generator to get the 96 holes. Then put a filled shape over the hole area. When I bring this symbol into a board, edit the shape to assign a net to it, all of the holes show drc's and do not connect to the shape electrically.
I'm really considering just making a Captur part with 96 pins, tying them all together and then to the net desired. I can add a new sheet to the schematic just for these parts. Then the whole mess will be netlist driven and the symbol should connect. It just makes the schematic one sheet longer.
I knew exactly how to make this happen in the old version (Layout)................
In reply to TH Designs:
I think what Dave was getting at was to make a "one pin" symbol. Then define a padstack for the one pin that is your 6" pad on all layers. Then get your 96 vias using the hole arrray multi-dril feature in the padstack designer. Think that's what I would try, except for the other posting here regarding the multi-drill and offset problems - -
Luck - -
You can do this as a library symbol with a single pin, you shouldn't need a shape (and, as you have discovered, that won't work very well. Add a through pin 6.5" x 0.5" and use the Multiple drill feature (see attached)
Hmmm. Rows and colmns appear to be limited to 10 x 10. You may need to consider adding the majority of holes as vias.