![Save and Rename of New Schematic
• [Schematic]File->Save as… (flasher.sch)
• Note: Do not create a
board file yet.
16](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-16-320.jpg)
![Finding and Add a Component
• [Schematic] Add
19](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-19-320.jpg)
![Net classes
• [Schematic]Edit->Net classes
• Can also be done in Layout Editor later
30
1mil = 0.001inch](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-30-320.jpg)
![Laying Out the Board
• [Schematic]File->Switch to board
• “This is no board, so would like to create one from
the schematic?” – “Yes”
• Yellow lines: airwires-connections that will have to
be converted into tracks
• Rectangle: borders
32
Note: 1. Do NOT close either
schematic or board window.
They must both remain open
while working. Change in on
editor window will lead to
change in the other window.
2. Change background color:
[Board]Options->User
interface…->Background->White](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-32-320.jpg)
![Autorouter
• [Board] Autorouter
39](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-39-320.jpg)
![Design Rule Checker
• [Board]DRC
45](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-45-320.jpg)
![Add Text on the Top (Silkscreen)
• [Board]Layers – Pads, Dimension, tPlace, tOrigins,
tNames, tValues
47](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-47-320.jpg)
![Smash – Separate the Text From Devices
• [Board]Smash
• Group
• Smash: Group
48](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-48-320.jpg)
![Gerber File Generation – CAM
Processor
• [Board] File->CAM Processor
• [CAM Processor] File->Open->Job->sfe-
gerb274x.cam
60](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-60-320.jpg)
![Gerber File Generation – CAM
Processor
• [CAM Processor] Process Job
61](https://image.slidesharecdn.com/pcbdesignwitheagle-240412005901-52f183a1/85/PCB-Design-with-EAGLE-software-interactions-PDF-61-320.jpg)
PCB Design with EAGLE software interactions.PDF
- 1. Senior Design Workshop PCB Design with EAGLE Dr. Feng Li Dept. of Electrical & Computer Engineering University of Idaho
- 2. Outline • PCB introduction • CadSoft EAGLE introduction • Schematic design • Board layout and routing • CAM processor export • DFM • Fabrication • Assembly 2
- 3. What is PCB? • Printed Circuit Board • Mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from coper sheets laminated onto a non-conductive substrate. • Two purposes: • A place to mount the component • Provides the means of electrical connection between the components • PCBs can be • Single sided (one copper layer) • Double sided (two copper layers) • Multi-layer 3
- 4. PCB Terminology – Component Packages • Through-hole • Soldered to the opposite side of the board • SMD/SMT (surface mount device/technology) • Soldered in the same side of the board • Can be mounted on both sides of the PCB • Smaller than the thru-hole type-smaller & denser PCB • Some common form factors • 0805 (means 0.08”x0.05”) • 1206 • 1210 4 http://www.pcb.electrosoft-engineering.com/04-articles-custom-system-design-and-pcb/01-printed-circuit-board-concepts/printed-circuit-board-pcb-concepts.html
- 5. PCB Terminology • Pad: a small surface of copper where component will be soldered to the board • Via: plated hole that allows the current to pass thru the board • Track (trace): conductive path connecting 2 points (pads, vias) • Soldermask: a layer of insulating lacquer covering both surfaces of the board to prevent the solder to short- circuit two tracks from different nets. • Silkscreen (overlay): letters printed on the final board, e.g., solder mask 5
- 6. PCB Terminology 6 SMD pads Thru-hole pads Silkscreen Copper tracks Soldermask (stop mask) Via Thru-hole (full stack) via 1-2 blind via 2-3 buried via http://www.pcb.electrosoft-engineering.com/04-articles-custom-system-design-and-pcb/01-printed-circuit-board-concepts/printed-circuit-board-pcb-concepts.html http://en.wikipedia.org/wiki/Via_(electronics)
- 7. PCB Process Flow Schematic Layout CAM Gerber output Production Assembly DFM Function Design Form factor Component library Design rules Electronic rules Routing EAGLE FAB house DIY and/or workshop 7
- 8. What is EAGLE? • Easily Applicable Graphical Layout Editor • Easy to use CAD tool for designing PCBs • CadSoft • Consist of three main modules: • Schematic editor • Layout editor • Autorouter • It runs under Windows, Linux, and MacOSX • It comes with an extensive library of components 8
- 9. Three Versions • EAGLE light • Limitations: • 1 schematic sheets; • 2 signal layers (top & bottom) • 100x80mm routing area • It can be used for free • EAGLE standard • 99 schematic sheets • 4 signal layers • 160x100mmrouting area • EAGLE Professional: full featured version • Up to 1600x1600mm • Up to 16 routing layer • Up to 999 sheets per schematic 9
- 10. Download and Installation • Current edition: 7.1.0 • http://www.cadsoftusa.com/download-eagle/ • Professional version ( 6.5.0) available in the Senior Design Lab • Contact John Jacksha (J.J.) • 7.1 and 6.5 may have compatibility issues • Begin with 6.5 light version and use Pro version in lab • Begin with 7.1 light version and order your standard or professional version 10
- 11. Installing Optional Libraries • SparkFun library • contains footprints for many common devices • helps narrow the choices • https://github.com/sparkfun/SparkFun-Eagle-Libraries • C:Program Files (x86)EAGLE-6.5.0lbr • Adafruit • http://github.com/adafruit/Adafruit-Eagle-Library • C:Program Files (x86)EAGLE-6.5.0lbr • Component order • http://www.digikey.com 11
- 12. EAGLE User Interface – Control Panel File manager Status line Information window: display what is selected in file manager Menu bar 12
- 13. Example Project: LED Flasher Using 555 Timer 13
- 14. Creating and Naming a New Project • File->New->Project (you can name the folder as flasher) 14
- 15. Creating a New Schematic • Right click folder “flasher”->New->Schematic 15
- 16. Save and Rename of New Schematic • [Schematic]File->Save as… (flasher.sch) • Note: Do not create a board file yet. 16
- 17. Schematic Editor Window Title Bar Menu Bar Toolbar Parameter toolbar Command Toolbar Status Bar Command Bar Working Area 17
- 18. Schematic Editor Window Command Tools 18 Info – Info on a part Show – Highlight a part, wire, or trace. Very Useful Layer settings – Change Layers Name – Name a part Value – Define a value (20 Ohms, etc) Add – Add a part from the library Net – Connect component Group – Define a bunch of parts to a group to move. Label – Label items ERC - Electrical Rule Check Move Rotate Delete – Delete a part
- 19. Finding and Add a Component • [Schematic] Add 19
- 20. Search for a Component • Enter “*555*” in the Search field • Find “NE555” • Click “OK “ 20
- 21. Drop a Component • Move the cursor toward the middle of the schematic window • Click to drop the component • Press “ESP” key to escape from adding component; • Click “Cancel” to escape from the adding Window. • You can delete a Component by clicking “Delete” 21
- 22. Add Components – Resistors and Capacitor • SparkFun-Resistors: RESISTORAXIAL-0.3 (x4) • SparkFun-Capacitors: CAP_POLPTH2 22
- 23. Add Component – LED and a Screw Terminal for Power Supply • Adafruit: LED5MM (search “LED5mm”) • Adafruit: 1X2-3.5MM (search “terminal”) 23
- 24. Rotating and Moving Components • Rotate • Move • Zoom… 24
- 25. Connecting the components • Net 25
- 26. Setting Component Values • Value 26
- 27. Electrical Rule Check • ERC 27
- 28. • Use “Show” to show net name • Search for “capacitor” and find CAP-PTH-SMALL • Add the capacitor and connect it to Pin5 and the ground 28
- 29. 29
- 30. Net classes • [Schematic]Edit->Net classes • Can also be done in Layout Editor later 30 1mil = 0.001inch
- 32. Laying Out the Board • [Schematic]File->Switch to board • “This is no board, so would like to create one from the schematic?” – “Yes” • Yellow lines: airwires-connections that will have to be converted into tracks • Rectangle: borders 32 Note: 1. Do NOT close either schematic or board window. They must both remain open while working. Change in on editor window will lead to change in the other window. 2. Change background color: [Board]Options->User interface…->Background->White
- 33. Board Tools Layer Settings – Change layers Group – Group multiple components to move at once. Route – Create a trace (this is the actual wire that carries the electrical signal) Rectangle – Draw and define a rectangle Via – Brings a trace from the top layer to the bottom layer Ratsnest- Calculates the shortest possible airwires and polygons Design Rule Check – Very Important! More Later Show – Highlight a trace or part. Useful to see what connects where. Auto Router – Somewhat unreliable Polygon – Draw and define a polygon. Ripup – Remove Traces Move – Select to Move components Text – Add text 33
- 34. Move • Move • Group • Group move 34
- 35. • Move • Rotate • Move • (resizing the board) • Zoom to fit 35
- 36. Ratsnest – calculate the shortest airwires (and polygons) 36
- 40. Board Layout 40
- 41. Rip Up the Tracks (Optional) • “Rip up” • “Group” • “Ripup: Group” 41
- 42. Tweak the Result – Add a Ground Plane • Polygon – draw a square around the outline of the board • (Right click the border of the polygon)Properties – Layer: 16 Bottom, Width 0.01 42
- 43. Add a Ground Plane • “Ratsnest”- the polygon fill with blue • “Name” - GND 43
- 44. Add a Ground Plane • Autorouter • Ratsnest: Nothing to do! 44
- 45. Design Rule Checker • [Board]DRC 45
- 46. CAD Layers • 1 Top (top tracks) • 16 Bottom (bottom tracks) • 17 Pads • 18 Vias • 19 Unrouted • 20 Dimension • 21 tPlace (top silkscreen) • 22 bPlace (bottom silkscreen) • 23 tOrigins • 24 bOrigins • 25 tNames • 26 bNames • 27 tValues • 28 bValues • 44 Drills (for pads (of through hole components) and vias) • 45 Holes (for mounting holes) 46 Note: CAD layer is different from (conductive) layer.
- 47. Add Text on the Top (Silkscreen) • [Board]Layers – Pads, Dimension, tPlace, tOrigins, tNames, tValues 47
- 48. Smash – Separate the Text From Devices • [Board]Smash • Group • Smash: Group 48
- 50. Change Font • Change –>Font->Vector • Group- Change:Group 50
- 51. Change Ratio • Change->Ratio->12 • Group – Change:Group 51
- 52. Move Labels • Move (labels) • Layers – Pads, Dimension, tPlace 52
- 53. Add Text to the Top (silkscreen) • Change-Layer-tPlace • Change-Size-0.05 • Change-Font-Vector • Change-Ratio-12 53
- 54. Add Text to the Top • Text->GND 54
- 55. Add Text to the Bottom • Layer->Pads, Dimension, bPlace • Change->layer->bPlace 55
- 56. Add Text to the Bottom • Text – www.uidaho.edu 56
- 58. Gerber Files • A 2D vector image format • Universal format and industry standard for PCB fabrication • TXT files with coordinates that tell the PCB machines to go to location X, Y and do something (drill, expose, etch, print, etc). • Formats: • RS-274X (Extended Gerber or X-Gerber) • Human readable ASCII format consisting of a sequence of commands and coordinates • RS-274D (obsolete) • Different text files for different layers. • Generated by the CAM (computer aided manufacturing) processor 58
- 59. Typical Gerber File Types Description EAGLE (default) EAGLE (Sparkfun) Orcad Protel Top copper layer (component side) cmp gtl top gtl Bottom copper layer (solder side) sol gbl bot gbl Top solder mask stc gts smt gts Bottom solder mask sts gbs smb gbs Top overlay (silkscreen) plc gto sst gto Bottom overlay (silkscreen) pls gbo ssb gb0 NC Drill file (coordinate info) drd txt thruhole.tap drl Note: Extensions are different for different PCB design tools, but information is the same. EAGLE default CAM job needs to create drill file and gerber files separately. SparkFun CAM job needs only one step. https://github.com/sparkfun/SparkFun_Eagle_Settings/tree/master/cam Download the file sfe-gerb274x.cam, and save to some folder 59
- 60. Gerber File Generation – CAM Processor • [Board] File->CAM Processor • [CAM Processor] File->Open->Job->sfe- gerb274x.cam 60
- 61. Gerber File Generation – CAM Processor • [CAM Processor] Process Job 61
- 62. Gerber Review, Submit and Order • Review: verify the CAM output in a Gerber viewer to make sure everything was positioned correctly • Viewplot: http://www.viewplot.com (can be downloaded and installed • Online viewer: www.gerber-viewer.com • Design for manufacturability (DFM)(Files upload) • FreeDFM: http://www.freedfm.com https://www.my4pcb.com/net35/FreeDFMNet/FreeDFMHome.asp x • Some PCB fab houses • Advanced Circuits http://www.4PCB.com • quick, reliable, and relatively cheap • $33/board with a week turn around • Dirty Circuits http://www.dirtycircuits.com 62
- 63. Assembly (Soldering) • Through-hole components • DIY at ECE Senior Design Lab (BEL 216) • Surface-mount devices • GJL 001 ECE lab (free) • < 30 components • Case size > 0402 • Label pin numbers • Mr. Greg Klemesrud: gregk@uidaho.edu 63
- 64. Reference • Simon Monk, “Make Your Own PCBs with EAGLE: From Schematic Designs to Finished Boards,” McGraw- Hill/TAB Electronics; 1 edition (May 22, 2014) 64 Special Thanks to • Dr. Michael Santora • Dr. Steven Beyelein • Mr. John Jacksha (J. J.) • Mr. Greg Klemesrud