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The gEDA project is working on producing a full GPL'd suite of Electronic Design Automation tools. These tools are used for electrical circuitdesign, schematic capture, simulation, prototyping, and production.
pgmtokicad is a project that aims to develop and maintain applications that can be useful for importing custom images in both schematics and printed circuit boards made with KiCAD
Liquid PCB is a Computer Aided Design (CAD) application for designing Printed Circuit Boards. It is unlike any PCB CAD package you have used before. It has innovative user interface, and lets you create freeform tracks without any straight lines.
Visualization of PCB (printed circuit board) descriptions in Gerber RS-274X format. The intention is to let a PCB designer take an RS-274X formatted file and generate a 3D concept view, either locally, or generated as PNG/clip, or browsable X3D/VRML.
All design related files for a general purpose PCB, hosting a Microchip dsPIC33FJ256MC710 part. Includes gEDA schematic and layout files, BOM, etc... The card will include power regulation, SD memory card, in-circuit programming support, etc...
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This a print circuit board editor written in Qt.
It aims to provide sprint layout like functionalities.
It is not actually fonctional at this time, even as an alpha release but I will update my work regularly.
ElectroMimic is an electronic circuit simulator in Java™. The simulator is focused on the piecewise-linear models normally used by undergraduate students, but can also be linked with external simulation software for more realistic results.
Scicos-HDL is a tool to design digital circuit system; it integrates the hardware circuit, algorithm and Scilab/Scicos environment as a plat for digital circuitdesign, simulation and Hardware Description Language generation. ZhangDong & KangCai
GBTiler, a Gerber circuit board tiling program allows engineers, electronics hobbyists and other users with Gerber RS274X format files to "tile" or combine separate Gerber files -- circuit boards -- into a single, valid Gerber formatted file.
Laboratory Circuit Simulator is transient simulator whiht analog and digital components support for laboratory classes.
This support spice netlist files, DSP Tms320f243 DSPemu integration and has high customizable device modules development in c.
libLCS is a hardware description library in C++ aiming to be as powerfull and easy as the Verilog HDL. It currently supports logic gates, flipflops, clock, and facilitates delays, continuous assignments and variable value dumping into VCD files.
XML is one way to transfer a Printed Circuit Board (PCB) data base
between Software Applications. This projects starts with an export
from PCB123 and creates a Kicad brd file.
Visually build and simulate boolean logic circuits
Visually build boolean logic circuits and then simulate their operation. Create custom components from user-designed circuits. Written in Java for cross-platform functionality.
NOTE: This project has moved to Bitbucket at http://bitbucket.org/kwellwood/circuitsandbox
NGerber is a small class library that allows .NET applications to easily write Gerber files (commonly used for EDA to specify circuit board layouts). Gerber files created with this library are compatible with the RS-274-X standard.
Multiple dielectric transmission line calculator using a 2D field solver to compute the transmission line characteristics from the circuit trace dimensions entered by the user.
Spice+ is a general-purpose circuit simulation program, based directly on SPICE 3F.5 from the University of California (Berkeley). An improved version of Spice for DOS, Windows and Linux. http://spicep.sourceforge.net
Manages the launching, execution, monitoring and results of circuit simulation jobs. The output (WEB and text) includes the measured results and a pass/fail spec summary.
Much like SPICE does for circuit designers, SUGAR provides for MEMS designers a tool for quickly specifying their devices in a netlist type format and analyzing their devices with different simulation and mathematical techniques.
The official repository of JCSim is now hosted by github at https://github.com/almejo/jcsim
JCSim is a fully functional Digital Circuit simulator written in Java. You can create and simulate simple (and not so simple) circuits in an easy way.
It includes a basic set of gates, simple creation of new gates and simulation.