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Designing for Multiple PCBs in the Same Project | Altium.
If this is attempted it will open as an empty document. In line with the schematic and PCB editors, the multi-board Assembly editor includes an Active Bar located at the top of the workspace. The Multiboard Assembly panel is used to navigate and manage a multi-board assembly. The panel presents an expandable tree view of the complete assembly structure, not unlike the Projects panel, and includes all PCBs in the assembly, the components, layers and nets within each PCB, and any included STEP models.
The Multi-board Assembly panel showing an assembly of 4 PCBs, and the top and bottom sections of the case. It also allows addition boards, STEP models and other MBAs to be added into the assembly, and the visibility of selected part s to be toggled off or on. The Multiboard Assembly panel provides highlighting capabilities, where the part selected in the tree is highlighted in the workspace. The highlighting is bi-directional, therefore, the selection state of panel entries will change in response to objects that have been selected in the workspace.
Two boards selected in the workspace are also highlighted in the panel. The highlighting feature provides an excellent method of locating a specific part, for example, finding a component or examining the path of a set of nets as they pass under a daughterboard. As well as highlighting a specific part or parts, the panel can also be used to control the visibility and transparency of the parts currently selected in the panel.
Right-click the selected part s then select Visible or Transparent from the context menu. When hiding the selected part s , they will disappear from view, although, while they remain selected, they will continue to be visible.
Click on another part or anywhere in the workspace to deselect them and switch off their visibility. The animation below shows the Search feature at the top of the panel being used to locate the fan, which is then hidden. Three different types of additional parts can be added into a Multi-board assembly in the Multi-board Assembly MBA editor.
Note that a part is inserted into the Multi-board assembly as a single entity. For example, if you insert the STEP model for a case, which consists of a top half and a bottom half, you will not be able to manipulate these halves independently.
In this situation you need to insert each half into the assembly, separately. After launching the command, you will enter measurement mode. Measurement is performed as follows:. Collisions are flagged whenever two objects have surfaces that touch or intersect. Mated surfaces are not considered to be colliding.
After launching the command, the software checks for collisions between the various entities involved in the multi-board assembly. Any collisions will be reported through the Messages panel, and the offending objects highlighted using the Violation system color. Use the Details region of the Messages panel to investigate which component on a board involved in a conflict is causing the collision.
If required, collision violations highlighted in the design space after having run collision checking can be cleared by selecting the Tools » Clear Violations command. The multi-board assembly editor supports rigid-flex PCBs. When you first transfer the boards into the Assembly editor, they are neatly placed on the same plane - you can imagine them as all being laid out next to each other on a virtual table. Within a few minutes, you will have moved this one, rotated that one, and pulled another one closer to you!
And then you will have rotated the view, now you're not even sure which way is up! Working in a 3D design space requires skill in managing your view into that space, and skill in manipulating the objects within that space. These are separate skills, controlling your view of the space, and positioning the boards within that space - let's start with the techniques you use to control your view of the space.
Once you have mastered reorienting the view, you will be ready to learn how to position and orient the boards. Your view of the assembly can be controlled via the keyboard and mouse, or you can use a use a 3D mouse , such as the Space Navigator.
You can change the view of the assembly editor to Perspective or Orthographic by toggling the View » Toggle Projection Type command or use the P shortcut from the main menus. When you select a board another gizmo appears; that one is called the Object Gizmo more details below. The Workspace Gizmo is always displayed down the bottom left.
As you hover the mouse over a colored Gizmo element it will become lighter, indicating that it is active. When you click on that color, the view will reorient so that you are looking down that axis into the assembly. A second click will flip the view over, looking down the same axis from the other direction. The table below gives more details about the various behaviors. Use the Workspace Gizmo to change the orientation of your view. Many of the view movements you can perform are not referenced from the workspace axes, instead, they are referenced to your current view.
Your current view is referred to as the Current View Plane, it is the plane you are currently seeing looking into your monitor.
For example, when you zoom in the workspace contents are bought closer to you, regardless of the current angle of the workspace axes. Your current view can be changed using mouse and keyboard shortcuts. The View Configuration panel is used to configure the color and workspace visibility options in the Multi-board Assembly editor.
It is also used to control the display of the section view, and the section panels. The Multi-board Assembly editor's View Configuration panel. In the Multi-board Assembly editor, each workspace axis, and its corresponding plane, is assigned a color:. A Section View is a view that can be used to reveal detail within an assembly, that might normally not be visible. This is achieved by defining a plane where a section of the assembly is cut. The Multi-board Assembly editor supports defining a section plane along each of the 3 axes, allowing the section definition to be in 1, 2, or 3 directions.
The color of each section plane is configured in the System Colors section of this panel. Each layer includes a small color button, click this to display the color selector, as shown below.
I was working with a customer recently who had two PCBs that were related. In this multi-circuit boards design project he wanted to work from a single schematic package, yet have a subset of the schematics populate two different printed boards.
In other words, each PCB project targets only a single board. So in order to have related schematics populate different circuit boards, we first need to have multiple PCB Projects PrjPCB , one for each board we are targeting.
Multiple PCBs in one project doesn't have to be hard, this will help, trust me. Consider the Design Workspace in the figure below. Here we have three PCB projects. It is in this project that all schematic capture design, electrical rule checking, etc. This is in fact the master design project for all boards to made from the design.
Since all of the schematics are in the same project, their net connectivity will be extant throughout the design. PrjPCB - contain a subset of the schematics in the first project, as well as the PCBs which will be updated by the defined schematic capture subsets. While the demo design used in this blog targets just two PCBs, this technique can be used for any number of printed board designs and provides a simple way to consolidate the front-end schematic design of complex designs with multiple PCBs in one project.
And there you have it, an approach to multi-board design that will allow you to work from a single schematic package and have a subset of the schematics populate two different boards. Connectivity data is imported into the system design from child projects as outlined above, and the system design connectivity data may be passed back to the source PCB projects through the child project Update feature Design » Update Child Projects.
To update an individual child project, select its associated Module and choose the Design » Update Selected Child Projects command — both commands are also available on a Module's right-click Design context menu. When the command is run, the design editor compares the connectivity data in the system design with that in the child projects. Any differences that are detected will be listed as proposed changes in a following Engineering Change Order ECO dialog, or a Comparator alert dialog will indicate that no differences have been encountered — and by implication, that no changes are required to maintain the system design to child project synchronization.
Note that the Update Child Projects process would normally be performed after any conflicts have been resolved in the Connection Manager dialog, so as to synchronize the child projects to the correct state of the system design. This is equivalent to where the changed child project data has been imported into the system design, and the connection conflict was been resolved using the Revert option. If the Swap Pins option was used to resolve the conflict, Pins 4 and 5 on the HDR6 connector in the main board project would have been swapped.
Other detected and resolved changes, such as a mismatched Net name are synchronized by a direct update to the target in the child project. Using Altium Documentation. Now reading version For the latest, read: Capturing the Logical System Design for version The physical counterpart to the logical system design in a Multi-board Schematic document is a Multi-board Assembly document, which is populated with imported PCB data from the Multi-board Project. For both the Multi-board Project and its open schematic documents, right-click on their entries in the Projects panel then select the File » Save As option to rename the document files accordingly.
A small triangle shape in the lower area of a button indicates that a drop-down menu is available for accessing other related commands. Click and hold the button to open its menu.
To assist repeated object placement, the button icon and function will actively change to show the last used menu option. These commands are also available on a module's right-click context menu. Select a Connection graphic in the workspace to see its details, such as the included Nets and Pin connections, in the Properties panel. Note that along with a connection's Designator , the wire name and local Net name Net for each entry in the Connections list can be edited for convenience.
These names are local to the Multi-board system design and do not affect the source Child Projects. The Conflict Resolution options that are available will depend on the type of connection that is selected. The Swap Wires option, for example, will not be offered for a Direct Connection between Module Entries, where the PCBs are directly plugged together rather than wired together. Note that the Net Name values shown in the dialog are not changed when a Conflict is resolved since they represent the Net names in the local System Design.
These names are automatically created when a connection is initially placed between Module Entries and may be changed at any time by editing that connection or Wire, etc.
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