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Build Your Own PCB with EAGLE III - Turning the EAGLE Schematic into a PCB
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Build Your Own PCB with EAGLE III - Turning the EAGLE Schematic into a PCB

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To explain how to design a PCB from a schematic using EAGLE Board Editor

To explain how to design a PCB from a schematic using EAGLE Board Editor

Published in: Technology, Design

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  • 1. Build Your Own PCB with EAGLE III – Turning the EAGLE Schematic into a PCB
    • Source: CadSoft
  • 2. Introduction
    • Purpose
      • To explain how to design a PCB from a schematic using EAGLE Board Editor.
    • Outline
      • EAGLE Layout Editor User Interface
      • Key steps for design a PCB from a schematic
      • Autorouter
      • Generating Gerber files
    • Content
      • 15 pages
  • 3. Board Editor User Interface Title Bar Toolbar Menu Bar Parameter toolbar Command Line Command Toolbar Working Area Status Bar
  • 4. Creating a Board for a Schematic
    • To start laying out the PCB, you should open the schematic and click on the board-button.
    Board Area Board Editor Devices from the schematic Switch to Board
  • 5. Placing Components
    • Use “MOVE” command to drag the various components to the desired positions.
    Air wires Move Command
  • 6. About Board Layers Bottom (Solder) side copper traces Bottom 16 Other copper layers (not support in Light Edition) 2-15 Top (component) side copper trances Top 1 Description Layer Name Layer Number Mirror Command
  • 7. Manual Routing
    • The ROUNTE command ( ) allows the airwires to be converted into tracks.
    • A click on the middle mouse button while a track is being laid allows a change of layer.
    • Clicking with the right mouse button changes the bend of the track.
    Top layer track Bottom layer track Via connecting tracks in different layers Airwire Track bend
  • 8. Routing – Autorouter
    • Start the Autorouter by clicking the AUTO icon ( ) in the command toolbar.
  • 9. Autorouter Features
    • SMDs are routed on both sides
    • The whole drawing area can be the routing area
    • The strategy is selected via control parameters
    • Simultaneous routing of various signal classes with various track widths and minimum clearances
    • Common data set (Design Rules) for the Design Rule Check and the Autorouter
    • Multilayer capability
    • Support of Blind and Buried vias
    • The preferred track direction can be set independently for each layer: horizontal and vertical, true 45/135 degrees
    • Ripup and retry for 100 % routing strategy
    • Optimization passes to reduce vias and smooth track paths
    • Prerouted tracks are not changed
  • 10. The Autorouter Menu
    • The Autorouter can't layout wires as arcs!
    • The Autorouter can't set micro vias!
    • The Autorouter can't set Blind and Buried vias if inner layers are defined as Supply layers!
  • 11. Manually Routing Again
    • RIPUP command ( ) is used to convert routed tracks into unrouted signals (airwires).
    • Then use ROUTE command to place track manually.
    Track before ripup Track after ripup
  • 12. Design Rules Setting
    • USE DRC command ( ) to open design rules setting window:
      • File: Manage the Design Rules
      • Layers: Number of copper layers, structure of multilayer boards, kind and length of vias, thickness of copper and isolation layers
      • Clearance: Distances between objects in the signal layers representing signals that may be different or the same
      • Distance: Distances from the board edge and between holes
      • Sizes: Minimum track width and hole diameter, particularly for Micro and Blind vias
      • Restring: Width of the remaining ring at Pads and (Micro) vias and the diameter of Thermal and Annulus symbols in supply layers
      • Shapes: Shapes of Pads and SMDs
      • Supply: Thermal and insulation symbols in supply layers
      • Mask: Values for solder stop and solder cream masks
  • 13. Checking the Layout Click check to start the checking
  • 14. Generating Gerber Files To create your Gerber files is to start the CAM Processor by clicking the CAM button ( ). Bstop .STS Tstop .STC Dimension, TPlace, TName .PLC Bottom, Pads, Via .SOL Top, Pads, Via .CMP Layer Extension
  • 15. Additional Resource
    • For ordering EAGLE Software, please click the part list or
    • Call our sales hotline
    • For more product information go to
      • http://www.cadsoftusa.com/index.htm
    • For additional inquires contact our technical service hotline or even use our “Live Technical Chat” online facility