91.548 home
schedule html
mtg 1: DC circuits html
mtg 2: Handy Cricket
  lab 2 html
     reference pdf
     inside-hc pdf
mtg 3: LogoChip
  lab 3 lab 3 html
     Start pdf
     Intro pdf
     Tech pdf
     Lang Ref pdf
     PIC 16F876 docs pdf
mtg 4: Project Ideas
  assignment 4 html
mtg 5: Bus Projects
  lab 5 html
mtg 6: PCB and CAD
  lab 6 html
  EAGLE home page
  EGX-300 Manual pdf
mtg 7:
   tangible bricks html
mtg 8:
  project plan html
  PCB tutorial html
mtg 9:
  project report html
  Doll Talk pdf
  curlybot pdf
  Clay illustration pdf
  LumiTouch pdf
mtg 10:
  Navig. Blocks pdf
  FormWriter pdf
mtg 11:
  Cognitive Cubes pdf
  Physical Programming pdf
mtg 12:
  Folk Computing pdf
  KidStory pdf
resources student pages project movies ikonboard LogoChip links

91.548 Lab 6: PCB Design Tools and CAD File Formats

due March 6


This lab has two components. You will learn how to draw electrical schematics and lay out printed circuit boards (PCBs) using the EAGLE CAD software. Also, you understand and write programs to manipulate common CAD file formats.


  1. Schematic diagram. Using the EAGLE CAD system, create a schematic diagram for your previously designed LogoChip project.

  2. Printed circuit board layout. Using the EAGLE CAD system, while creating the schematic, choose the appropriate PCB patterns for the parts you are using. Position the parts optimally in inside the rectangular board area. When the schematic is complete, run the Autorouter to lay out the board.

  3. Gerber files. After the layout is complete, create Gerber files for your design. Use Fred's EAGLE Gerber Output Instructions.

  4. Preview the Gerber files. Use the program GC-PREVIEW from www.graphicode.com.



  1. Experiment with the file conversion application server at C. Scott's PCBMill Web Utilities site. Convert your Gerber files into HPGL (Hewlett Packard Graphics Language) plt files.

  2. These converted HPGL files are tool paths for isolating traces on the printed circuit board. We need to convert these into CAMM-I commands for our Roland EGX-300. We don't have Roland Signmate, so your task is to figure out how to convert from the plt file into something that can be sent to the EGX-300 engraver. Strategies: find info on HPGL; read over the intro to CAMM-I; generate some shapes using the Roland EZ-Engrave software we do have, print those shapes to a file, and examine that file for sample legitimate CAMM-I code.

  3. We also need a software tool to convert the drd drill data files into CAMM-I instructions. Work on this or the above conversion problem.

Last modified: Thursday, 27-Feb-2003 17:00:56 EST by fred_martin@uml.edu