In the following screen capture (KiCAD 8), there is a dual row connector (0.1inch pitch), with two connections to a filled zone (other than ground). One is at the end, the other is somewhere midway along the detector (i.e. not at an end). This pin midway is the one that I would like to ask about. The signals on the adjacent pins will be clocked at 1MHz (typically).
Notice that the connection to the filled zone creates two “islands” (for lack of a better term) in the filled zone. Is that okay? And if not, how do I prevent it?
P/S “Remove islands” is set to “always”
(This situation came up from a backward compatibility problem. So moving the connection to the other end would mean propagating the change to other boards that are already in use.)
You don’t say what kicad version are you using. If you use v8 or v9 you can set the Removed island option in Copper Zone Properties.
PS: For the even pins…and off topic…you don’t mean Ground instead Earth?
And selecting any area in the minimum island size? Also take into account you have selected a Minimum width of 0.254. Try to change this to 0.1 for example.
The “remove islands” option is not suited for this case. In kicad terms “islands” (from the zone properties dialog) refers to completely unconnected (==floating) copper areas.
The first one looks good. One large rule area under the middle of the connector, corners at the center of the outermost four pins, and set it for both of the inner (i.e. ground and power) layers.
