Negative Dryfilm Photo Resist Instruction for PCB prototyping. #1

Cut a PCB to your preferred size. The copper surface must be completely clean.


Cut a piece of dry film with the size of your board.


Strip off one of the cover sheets which are primitively adhered to the dry film.


Adhere the film to the PCB. (Be careful of bubbles!)


Place a clean sheet ( a piece of cloth ) on top of the PCB and iron all over the sheet with approximately 110 degree Celsius heat. ( Be careful for excessive heat which could melt the film).



Check up the bonded dry film for bubbles. If there are any bubbles, pop the bubble with a pin and redo the previous step (step 5). The dry film will not be bonded to the PCB if there are any bubbles.


Now your PCB is laminated. Place a 100 watts light bulb twelve inches high over the PCB.


Place the artwork film on the PCB and put a clear glass on top so the weight of the glass makes the artwork and the PCB better adhered to each other. Illuminate the bulb for approximately 15 minutes.


Mix the developer powder with 200 cc of clean water and stir them until the developer and the water completely mixed.


Strip off the other cover sheet.


Clean the PCB with the developer by using a sponge to gently rub all over the PCB until the artwork completely showed up. Make sure there is no any unwanted dry film left behind.


Rinse the pcb with water and wait until it is dry.


Put the PCB into a bowl of PCB Etchant. Slowly shake the bowl until the excessive (unwanted) copper is completely etched. Rinse the PCB with clean water.


Put the PCB into a bowl of thinner. The film will get soften and be peeled off from the PCB. Rinse the PCB with clean water.


Drill the holes and clean up your new PCB.


From : http://www.warapcb.com/dryfilm.php

Download Protel 2.7 Version Evaluation

Protel V.2.7 is small than 2.7MB only.
very fast too. I like it.

Download here.
Mirror #1 Mirror #2 Mirror #3

Freeware: Merlin PCB Designer

I try software here , very good for desigh PCB, For Corel draw User.

Freeware: Merlin PCB Designer

General information
Merlin PCB Designer is a free printed circuit board (PCB) layout tool that is distributed by Falco Systems. Whether you are professionally involved with printed circuit manufacturing, or you are just making a few PCBs for your job or at home, Merlin PCB Designer can make your life easy and save you a significant part of your PCB-related expenses.

If you already have CorelDRAW on your computer, you can use the licence-free Merlin PCB Designer package to convert it into a powerful PCB layout tool. Bu sure to read the manual first!

Download Merlin PCB Designer
Merlin PCB Designer comes as a zip file with CorelDRAW scripts (from version 7 to 11), and a large component library + manual. To download Merlin PCB Designer, please click on the links below.

Merlin PCB Designer manual

Corel files + library


Falco Systems offers the free Merlin PCB Designer software "as is". Falco Systems does not offer additional support and is not liable for any problems that may occur due to the use of Merlin PCB Designer.

From : http://www.falco-systems.com/MerliPCB.html
Thank you

More Software electronics

More Software . . .

In addition, here are links to the home pages for

• 916 Design CAD Libraries to OrCAD and Protel EDA software users;
  
• Abstraction Software's DaVinci RF design tool;
  
• Arbitrary Transmission Line Calculator freeware;
  
• AMS Electronic Design's Circuit Creator Software ;
  
• AnaSoft Corporation SuperSpice and FantasticFilter;
  
• Ansoft Corporation EDA;
  
• Automated Circuit Design ;
  
• Ansys Finite Element Analysis;
  
• Automation Studio Circuit design and simulation software;
  
• Avista Design Systems Tools that simplify analog & RF circuit design;
  
• Barrenger Software, maker of the CRO Tutor;
  
• Bartels Autorouter & design tools (with working demos available);
  
• BEST PROTO electronics design and prototyping ;
• CADAES ;
  
• CADware, PADS reseller, CAD utilities & services;
• CadSoft w/ the Eagle layout editor;
  
• Capilano Computing, quality, low-cost ECAD, free demo software (fully functional "lite" version);
  
• CAI TRAINING RESOURCES
  
• CIRCAD design software;
  
• Circuit Magic circuit design and analysis;
  
• Micro Nation Software makers of CircSolver;
  
• CMH Software, ladder logic simulation;
  
• CODA Crystal Oscillator Design and Analysis;
  
• CSiEDA Analog & Digital Circuit/PCB design ;
• CAMtastic!ฎ
  
• Conversion Factors Inc. Netlist, Schematic, and PC Board translation tools;
  
• Custom Software Creators and their Semiconductor Cross Reference Library v7.0a;
  
• Data I/O, makers of Synario PLD design & simulation software;
  
• Design/Analysis Consultants, Inc. makers of Design Master software
  
• dTb Software� application specific CAE/EDA tools for electrical engineering;
  
• Douglas CAD/CAM, System for Macintosh PCB Design;
  
• DSP Design gives you 38 Freely Usable Digital Filter Design Applets (Java); DSP Development , graphical data analysis software;
  
• ExpressPCB , Free PCB layout editor for Win95 & low cost PC board manufacture ;
  
• EZ-ROUTE , integrated CAE software;
  
• Harmonic Software Inc. Makers of O-Matrix, an interactive analysis and visualization environment.
  
• Hyperception, DSP software for real-time and simulation dsp and EE applications;
• FNC-ELCAD ;
• Intercept ; makers of Pantheon PCB/Hybrid/RF design and Mozaix schematic capture software;
• Intusoft , makers of ICAP/4Windows ;
  
• Ivex , Windows based EDA tools
  
• Jovian Software's graphical DSP design software and hardware;
• Linear Technology , free switcher, filter, spice software;
• Logical Devices , CUPL logic design ;
  
• Maple
  
• MATCOM (Matlab-to-C++ generator)
  
• Matlab
  
• MathSoft , (producers of Mathcad)
  
• MathSource , (a source of Mathematica files)
  
• MathWare (producers of Derive)
  
• McCAD EDA Software
  
• Merlin PCB Designer , a free shareware package to route printed circuit boards using CorelDRAW;
• MetalMan , (electronics sheet metal chassis design software)
  
• MicroTec, 2D semiconductor Process and Device Simulator for Windows
  
• Microcode , (makers of CircuitMakerฎ "virtual electronics lab")
  
• Mike's Windows Spice port ;
  
• PIA , PCB design software;
  
• Mohamed's Utilities ;
  
• PALasm ;
  
• PeakFPGA Design Suite
• Protel Schematic & PCB design;
  
• RF, (an inexpensive RF analog design tool for students and amateurs)
  
• Router Solutions, Inc. , (provider for translator tools of CAE/CAD/CAM interface programs);
  
• Sage EDA Corporation, PCB design software for Windows and MacOS;
  
• Schematica Software, makers of Filter Wiz and eSketch, an analog linear simulator;
  
• Semiconductor Cross Reference Library v7.0a ,
  
• Siborg Systems Inc. , makers of MicroTec-3.02 for Windows: 2D Semiconductor Process/Device Simulator;
• The Small Device C Compiler (Freeware 8051, Z80, AVR cross compiler for Linux);
  
• SwitchMin, boolean-expression to logic schematic converter;
  
• Technical Data Systems, technical database with specs for more than 70,000 electronic components;
  
• Technology Sales Inc. with PCB, Spice and autorouting products;
  
• Trilogy Design , makers of Parts&Vendors personal parts list manager ,
• TTL-Simulator,
  
• TuneKitฎ for Windows , ( electronic filter synthesis program)
  
• TurboSimฎ , (circuit simulation tool);
  
• Velotec best pair resistor calculator;
  
• Virtual Micro Design Universal Microprocessor Program Simulator
; and
• WinPlace, freeware 3D placement/thermal analysis sofware,
• Wings of Technology prototyping and software support.

The ExpressPCB schematic and PCB design

The ExpressPCB schematic and PCB design software is very quick to learn and completely free! Download a fully functional version here.

Download 9M

DipTrace is an advanced PCB design

DipTrace is an advanced PCB design software application that consists of 4 modules: PCB Layout with efficient auto-router, Schematic Capture, Component and Pattern Editors that allow you to design your own component libraries. Besides being very easy-to-use, which is rare for a PCB design tool, this software possesses a very intuitive user interface and many innovative features. Output formats are DXF, Gerber, N/C Drill and G-code.

Download 22.5MB

TinyCAD is a program for drawing circuit diagrams in Windows

TinyCAD is a program for drawing circuit diagrams in Windows. It has drawing libraries included with it. It can output into popular PCB layout programs in PADs & Protel format. It also has a SPICE template engine to generate simulation files.

Download 2.5M

Resources and Link Software Electronics (FreePCB)

This page contains links and downloads that you might find useful.

Schematic Editors:

TinyCAD	This is a popular open-source schematic editor written by Matt Pyne
SwitcherCAD	This is a free editor and SPICE simulator from Linear Technology.
OrCAD Demo	This is a free, limited version of the OrCAD toolsuite, including their schematic and layout editors

Documents:

FreePCB User Guide (PDF)	The current version of the FreePCB User Guide
PCB Design Tutorial (PDF)	This is an excellent introduction to PCB design, by David L. Jones from "down under"
Home PCB Production (PDF)	(v.0.0.2) A guide to making PCBs at home, by Sasha Zbrozek from the User Forum

Links:

Yahoo group for FreePCB	A Yahoo group about FreePCB, moderated by Rick Collins
pcb-design-directory.com	A site with lots of links, some free and some commercial
PCBstandards.com	This commercial vendor of footprint libraries offers a free land pattern calculator
PCBLibraries.com	This site offers a free Viewer for all of the SMT packages and land patterns in the new IPC-7351 standard. Once you figure out how to use it, this thing is AMAZING! It includes footprints for all of the SMT packages with Least, Nominal and Most pad sizes. I would recommend it to anyone creating SMT footprints. In the future, I will probably use it to create a whole new set of FreePCB libraries.

FreePCB software for draw pcb ...easy...easy

FreePCB is a free, open-source printed circuit board layout editor for Microsoft Windows, released under the GNU General Public License. It was designed to be easy to learn and easy to use, yet capable of professional-quality work. It does not have an autorouter (yet). Some of its features are:

• 1 to 8 copper layers
• Board size up to 60 inches by 60 inches
• Uses English or metric units (i.e. mils or mm) for most functions.
• Footprint libraries courtesy of Ivex Design International Inc.
• Copper fill areas
• Footprint Wizard and Footprint Editor for creating or modifying footprints
• Imports and exports PADS-PCB netlists
• Exports extended Gerber files (RS274X) and Excellon drill files
• Design rule checker
• Autosave
  
  
  Web :: http://www.freepcb.com/
  Download :: http://www.freepcb.com/downloads.htm