While arranging the components, execute the RATSNEST command from time to time. It will flip the component including silk screen and solder stop (solder-resist window), plus the cream frame (solder-paste opening) for surface mounted devices (SMDs).ĥ. To place components on the bottom side, use the MIRROR command. The properties dialog shows that IC1 was exactly placed with the coordinates given in the command lineĤ. This will move IC1 to the given location. Type in, for example: MOVE IC1 (22 50) and hit the Enter key. To move a component to a defined position, use the command line. You can now see the cross that marks the origin of the component.Īctivate the MOVE command – with + left mouse button you can snap the component on the correct grid.ģ. To place the component on the right grid, click into Layer settings and activate layers 23 and/or 24 to make the “t(op)origins” or “b(ottom)”origins visible. As a general rule keep the grid as large as you can, allowing for the requirements of the finer components. Or set two grids in the same unit for example, 0.2 mm to rout racks for fine components and 0.4 mm where there is more space available. You can use metric and imperial grids in the same layout if required by different components. You can then switch quickly between them. Enter an Alt(ernative) grid value if you want to use two different grids. Place components with a mm footprint on a metric grid and components with an inch footprint on an inch grid. Click on the GRID icon to select the grid that matches the components. Before you move the components, select the correct grid to avoid problems with design rules. Use the LOCK command to fix components you don’t want moved (for example, connectors which need pre-defined locations).Ģ. Start by arranging the components in the board. Now move the components into the board area.ġ. Draw a closed contour to specify the size of the PCB. Use the WIRE command and select Layer Dimension (20). Okay, now we can start creating the layout. The Design Rules dialog is accessible through the Edit/Design Rules menu. This includes the most cost-effective DRC values from our PCB services. You can also download the free EAGLE DRU design rule file: Eurocircuits-EAGLE_dru_18-09-17.zip. They can give you advice on the optimum values for manufacturing all types of PCB. If you are uncertain what values to use, contact our engineers at Eurocircuits either by email ( or by online CHAT (click on green “Contact support” button). Decide the number of layers your board will probably have and select minimum pad and track sizes, minimum clearance values, minimum drill diameters (for example for vias or micro-vias) and so on. You must then compare board and schematic using the Electronic Rule Check (see Article 2: “Create a project and start drawing the schematic”) and correct the differences manually.īefore you start designing your layout, it’s important to set the Design Rules. If any differences do occur between board and schematic, Back&Forward Annotation stops working. If you close one of the windows by mistake EAGLE will warn you with a clear message in the Editor window. But please remember! For Back&Forward Annotation to work you must have Schematic and Layout both open together all the time. Or connect two pins with a net – you will immediately see the corresponding airwire in the Layout. This function transfers each action executed in the Schematic Editor automatically into the Layout and vice versa: Let’s say you add a new component in the Schematic – it will automatically appear in the Layout Editor. The components are already connected with so-called “airwires”, the point to point connections that result from the nets you have drawn in the schematic.īefore you start to arrange the components and create the layout, here is some preliminary advice.įrom this stage onwards EAGLE performs Back&Forward Annotation. Just click on the BOARD command in the Action toolbar of the schematic editor.ĮAGLE opens the Layout Editor window and shows the components randomly arranged on the left of a sample board contour. Once you have finished your schematic design, it’s easy to create your layout.
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