altium
I want to make a cut in the via like this image:
I'm using Altium to develop.
I was recommended to make the via "castellation" but I can't find how to make this via in the center of the board.
Does someone know more about "castellation" and can help me make this via with cut in the center of the board?
I'm making a six-axis sensor.
They have three vias with cuts, to result in six signals to read. It doesn't exactly have to be done by "castellation", but castellation was the only way I found.
This has been a bug in Altium for at least the last few versions. The footprint wizard does not apply pin numbers to the vias. I would recommend is you assign the vias the same pin number as the rectangular thermal pad in the footprint editor.
In my experience, this sometimes seems to work. Altium tends to get cranky when you have multiple pads/vias/whatever in the same footprint with the same number.
Anyways, You don't need to unlock the primitives to set the via's net. Press Ctrl+H to activate the Select connected copper mode. Then, just click anywhere in the thermal pad.
Then, in the PCB Inspector panel, you can simply edit the net for all the vias and the pad at the same time. If you set the net to whatever the ground pad is supposed to be, it will set the vias and the rectangular pad's net to the same.
Re: Allowing collisions between vias and the pad.
Globally allowing vias to intersect with component pads is very risky. I would change your rule to be:
Rule 1: InAnyComponent and IsVia
Rule 2: InNet('GND')
The reason your rule is not working is because your IsVia and InNet('GND') will only apply to vias that are already set to the net GND. Since your vias are set to NoNet, the rule is not being applied to the vias with which you are having problems.
When you design your schematic component, assign Designators to the pins, e.g. A + B or 1 + 2, .... In your PCB Library item (the one that is linked to your schematic symbol) use the Place -> Pad, select "Multi-Layer" as Layer, enter a hole size (.7mm) and a pad size (e.g 1.5x1.5mm) and you're done, name the two pads A + B (same name as in the schematic).
Now when you transfer your schematic design to your PCB, Altium will assign the appropriate nets to your pads.
Best Answer
You would generate the plated through hole of the appropriate size, and specify a slot in the appropriate board layer. You would need to chat with the fabricator to make sure the slot is cut after the hole is plated.