Pcbnew user interface Navigating the editing canvas Hotkeys Display and selection controls Board layers The appearance panel Selection and the selection filter Net highlighting Cross-probing from the Option Alt 5 Display and selection controls Board layers Layers in Pcbnew represent physical copper layers on a board, as well as graphical layers used for defining things such as silkscreen, solder There is always one layer that is active in the editor. The active layer is drawn on top of other layers and will be the layer assigned to newly-created objects. The active layer is indicated in the layer

Editor user interface Navigating the editing canvas Hotkeys Display and selection controls Board layers The appearance panel Selection and the selection filter Net highlighting Cross-probing from the Option Alt 5 Display and selection controls Board layers Layers in the PCB Editor represent physical copper layers on a board, as well as graphical layers used for defining things such as silkscreen, solder There is always one layer that is active in the editor. The active layer is drawn on top of other layers and will be the layer assigned to newly-created objects. The active layer is indicated in the layer

Editor user interface Navigating the editing canvas Hotkeys Display and selection controls Board layers The appearance panel Selection and the selection filter Net highlighting Cross-probing from the Option Alt 5 Display and selection controls Board layers Layers in the PCB Editor represent physical copper layers on a board, as well as graphical layers used for defining things such as silkscreen, solder There is always one layer that is active in the editor. The active layer is drawn on top of other layers and will be the layer assigned to newly-created objects. The active layer is indicated in the layer

Editor user interface Navigating the editing canvas Hotkeys Display and selection controls Board layers The appearance panel Selection and the selection filter Net highlighting Cross-probing from the Option Alt 5 Display and selection controls Board layers Layers in the PCB Editor represent physical copper layers on a board, as well as graphical layers used for defining things such as silkscreen, solder There is always one layer that is active in the editor. The active layer is drawn on top of other layers and will be the layer assigned to newly-created objects. The active layer is indicated in the layer

have a plated hole. The hole exists on every layer, and the copper pad exists on multiple layers (see Copper layers setting below). Edge Connector pads are SMD pads that are allowed to overlap the board to a technical layer, for example a paste or solder mask aperture. The Copper layers setting controls which copper layers will have a shape associated with the pad. For SMD pads, the options are F.Cu remove the pad shape from copper layers where the pad is not electrically connected to other copper (tracks or filled zones). Setting the copper layers to connected layers only will remove the pad shape

display order for board layers is dynamic and depends on which layer is selected as the active layer. The active layer is always drawn on top of other layers. In addition, layers that are related to the the active layer are drawn on top of layers that are unrelated. For example, if you make B.Silkscreen the active layer, then all of the other back layers (B.Cu, B.Adhesive, B.Paste, B.Mask, B.Fab, and top of the front, user, and inner copper layers, with B.Silkscreen topmost. If you make Edge.Cuts active, then it will be drawn on top, and the User.* layers and Margin will also be be brought to the

board design. They may be added on any drawing layer, but are normally added to one of the User layers. KiCad currently supports five different types of dimension: aligned, orthogonal, center, radial Shift W PgUp PgDn + - V < V 38 You can place a via and end the current trace, without changing layers, by pressing and then double- clicking or -clicking to place the via. 过孔的尺寸将从激活的过孔尺寸设置中获取，可通过顶部工具栏的下拉列表或增加过孔尺寸 single trace at a time. The router will only use the current layer; it will not use vias or change layers. While routing, press the key to have the router attempt to automatically finish the current trace

libraries Creating and editing symbols Browsing symbol libraries Simulator Value notation Assigning models SPICE directives Running simulations Helpful hints Advanced Topics Configuration and Customization ${variable_name} ) must be defined in Schematic Setup before they can be used. Error SPICE model issue SPICE models must not have syntax errors or other problems. Ignore 79 Violation Description Default Severity semiconductor device models. While these elements enable a great variety of simulation work, users familiar with SPICE in other environments will be used to incorporating models of commercially-available

${variable_name} ) must be defined in Schematic Setup before they can be used. Error SPICE model issue SPICE models must not have syntax errors or other problems. Ignore Labels are similar (lower/upper case difference semiconductor device models. While these elements enable a great variety of simulation work, users familiar with SPICE in other environments will be used to incorporating models of commercially-available commercially-available semiconductors, integrated circuits and other devices as more complex SPICE models. Indeed, semiconductor manufacturers often freely supply these to help users simulate and develop circuits using

libraries Creating and editing symbols Browsing symbol libraries Simulator Value notation Assigning models SPICE directives Running simulations Advanced Topics Configuration and Customization Text variables ${variable_name} ) must be defined in Schematic Setup before they can be used. Error SPICE model issue SPICE models must not have syntax errors or other problems. Error Labels are similar (lower/upper case difference ngspice as the simulation engine. All but the simplest simulations will require you to add simulation models to your symbols before you can simulate your schematic. When working with the simulator, the official