FINAL WRITEUP INFO
mtg 4: EAGLE PCB CAD
lab 3 html
papers Johnny 5 pdf
mtg 3: laser cutter & HPGL
lab 2 html
HPGL manual pdf
mtg 2: intl ground vehicle comp
mtg 1: LogoChip & Bus Devices
metacricket paper html
UML305DEV board assembly
lang ref pdf
PIC 16F876 pdf
lab 1 html
91.548 Lab 3: PCB Design Tools and CAD File Formats
due March 3
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 will
use understand and manipulate common 2-D CAD file formats.
PART ONE: PCB DESIGN AND GERBER
- Schematic diagram. Using the EAGLE CAD system, create a
schematic diagram for your previously designed LogoChip project.
- 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.
- Gerber files. After the layout is complete, create
Gerber files for your design. Use Fred's
EAGLE Gerber Output Instructions.
- Preview the Gerber files. Use the program GC-PREVIEW
PART TWO: CAD FILE CONVERSIONS
- Experiment with the file conversion application server at C. Scott's
PCBMill Web Utilities site. Use the convert your Gerber
files into HPGL
(Hewlett Packard Graphics Language) plt files tool.
- 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.
- I created a software tool to convert the drd
drill data files into CAMM-I instructions. See my printed
circuit board tutorial. See also C. Scott Ananian's ideas for
mounting blank PCBs in the engraving machine.
Thursday, 24-Feb-2005 17:18:02 EST