Circuit Design on Your Linux Box Using gEDA A lot of attention—and hype—has focused on bringing traditional office-productivity programs, such as the OpenOffice.org suite, to Linux. However, another important—and far less-hyped—area where Linux's desktop abilities come to the fore is in engineering software, and in particular, CAD (computer-aided design). Non-engineers tend to think of the term CAD as referring to mechanical design software, and they are partially right. We are used to seeing complicated drawings of mechanical assemblies appearing on computer screens in advertising and television. However, CAD doesn't mean only mechanical design. Electronics designers also long have used computer-based design tools to help them perform their design tasks. The area of CAD software used for electronics design is typically referred to as EDA, short for electronic design automation. Designing circuits using EDA tools is analogous to creating software using traditional software engineering tools. Origins and History of gEDA
Ngspice circuit simulator - TCLspice TCLspice builds a TCL/TK shell on top of ngspice. TCLspice is included and fully integrated into the ngspice source tree. All ngspice enhancements are accessible in tclspice as well. tclspice may be selected at compile-time, using the flag ./configure --with-tcl instead of --with-x, or --with-wingui. Ngspice then is made as a shared library (dll) ready for integration into tcl scripts. TCLspice is distributed with the core ngspice sources. Prior to year 2008 TCLspice was an independent project forked from ngspice. A crude copy and paste from TCLspice website: TclSpice is being actively developed and maintained by MultiGiG ltd (as a by-product of a Clock-verification tool) and we try to act in concert with the following independent Open-Source EDA efforts to achieve (eventually) a complete freely available but industrial quality tool-set which work together seamlessly. The project was started around 2002 when I started working for Multigig.
How to Install and Setup EAGLE Favorited Favorite 9 Introduction Printed circuit boards (PCBs) are the backbone of every electronic gizmo out there. We LOVE designing PCBs here at SparkFun. This first tutorial goes over how to install the software, and tailor-fit its interface and support files. Why EAGLE? EAGLE is one of many PCB CAD softwares out there. Cross-platform – EAGLE can run on anything: Windows, Mac, even Linux. Of course, EAGLE has its drawbacks too. Recommended Reading Here are a few tutorial and concepts you may want to familiarize yourself with before dropping down into this rabbit hole: Download, Install, Run EAGLE is available on Cadsoft’s (the developer company) download page. EAGLE installs just like any old program, it’ll self extract and then present you with a series of dialogs to configure the installation. Licensing EAGLE On the last screen of the installation process, you should be presented with a window like this: One of our favorite things about EAGLE is that it can be used for free!
PCB Home Page pcb is free software for designing printed circuit board layouts. It has many features and is capable of professional-quality output. It is available for UN*X operating systems, e.g., GNU/Linux, Mac OS-X, or Cygwin under Windows. pcb was orignally written by Thomas Nau of the University of Ulm, Germany, and is now maintained by harry eaton of the Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, USA.
BRL-CAD | Open Source Solid Modeling CircuitLab - online schematic editor & circuit simulator gEDA PCB Footprint Creation Utility This utility automatically creates the contents of common types of footprint files for the gEDA PCB layout tool. Simply enter the correct values in each field, press "Create Footprint", and then copy the contents of the output text window into a file with the name "partname.fp". If the part has special features, it may be necessary to manually modify the file. Notes: The reference mark is in the center of the device. Notes: The reference mark is in the center of the device. A SO type device is created when the "pins" values is twice the "pinshigh" value. A two leaded SMT chip pattern is created when "pins" is two and "pinshigh" is one. Notes: Pin 1 will be square.
soc-extras.lip6 Abstract Alliance is a complete set of free cad tools and portable libraries for vlsi design. It includes a vhdl compiler and simulator, logic synthesis tools, and automatic place and route tools. A complete set of portable cmos libraries is provided. Alliance is the result of a twelve year effort spent at SoC department of LIP6 laboratory of the Pierre & Marie Curie University (Paris VI, France). Alliance has been used for research projects such as the 875 000 transistors StaCS superscalar microprocessor and 400 000 transistors ieee Gigabit HSL Router. Alliance vlsi cad System is free software. Circuit Designed with Alliance Smartlabs/Smarthome designed a complete circuit in the xfab XH035 technology (2014).Tokai University (Shimizu Lab) designed the snx, a 16 bits processor in the rohm 0.18µm (2010). Those are circuits that we know of because their designers were kind enough to inform us (it is not comprehensive). Rebuild From Source (Git) Note
Fritzing geda:gsch2pcb_tutorial [gEDA Project Wiki] Translations of this page are also available in the following languages: Русский. This is a tutorial on the process of using gsch2pcb as an interface between gschem and PCB. It assumes the gEDA, PCB and gsch2pcb packages are already installed and ready to use. Starting with gEDA 20030901, gsch2pcb is packaged with gEDA and doesn't need to be separately installed. This tutorial is functional and intended to generate results as quickly as possible. The goal is to use gsch2pcb as the bridge between gschem and PCB so that the schematics can always be in sync with the PCB layout because all element additions or deletions in the layout will automatically be driven by changes in the schematics. See the release notes for the history of this tutorial. Terminology With gschem, you add symbols representing electronic components to a schematic. The schematic footprint attribute value of a symbol is the name of the PCB element to be placed on the layout for that instance of the symbol. Setup to:
QCAD - 2D CAD for Windows, Linux & Mac Recommendations for Practical Analog Electronics Books Perhaps the easiest introductions to electronics that you can find is the free e-book Lessons In Electric Circuits (allaboutcircuits) by Kuphaldt. It assumes no prior knowledge of electronics, physics or mathematics and explains everything in a very gentle way. IMPORTANT NOTE: If you are new to electronics and you want to build your own circuits (or modify or just take measurements in circuits that others have built), you should first familiarize yourself with the basic safety measures. A very good introduction to such measures is the chapter Electrical Safety in Kuphaldt's book. I strongly recommend that you study it very carefully before you start working. If you prefer videos, you can find a nice introduction to electronics in the Video Lectures by Fiegenbaum. Some of the Electronics Tutorial Videos by Afrotech are mainly for the hobbyist. An interesting page is Williamson Labs by Glen Williamson. A very readable book is Practical Electronics for Inventors by Scherz.