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An Arduino pseudo OS with a focus on data acquisition and control.
With eparts, you can manage your stock of electronic components. You can create and manage projects, part lists, suppliers, buying lists etc. and import projects from EDA tool 'kicad'. It's written with Ruby on Rails.
IMPORTANT: The flosslogic project has merged with the sigrok project. Development continues in the sigrok wiki, mailing lists, IRC channel, and git repository.
Magnetostatic finite differences simulation tool based on GNU Octave and a Perl/Tk user interface.
Microwave Design Kit is a GNU GPL collection of GNU Octave scripts to design microwave circuits at a block diagram level.
SPICE netlist preprocessor in Python that: combines elements, drops insignificant nodes and elements, and allows parameterization of netlists like HSPICE.
Register Interface Description tool
The sigrok project aims at creating portable, cross-platform, Open-Source logic analyzer software that supports various hardware products. The sigrok+ project is a fork of the great sigrok project, with added support for oscilloscopes.
the project take inputs & plots smith chart with respect to input
A very fast, yet accurate Transmission Line Calculator, suitable for silicon (Si+SiO2) substrates. The results are within +- 1% (in most cases) of those calculated by popular 2.5D-3D full wave simulators, while being orders of magnitude (7-8) faster.
Project is not hosted here any more! Check www.toped.org.uk for further info!
uSimulator is a circuit simulator including fully programmable microcontrollers (microchip assembly language).
xerlox ( say: zer'locks ) is both a tool and a toolbox that brings Perl and Verilog together to create an efficient Verilog HDL design environment. xerlox promotes up-front documentation, efficient coding, and design reuse.
Bounder is a free 3D CAD application for solid modelling. It targets a feature-based approach where parts are designed by sketching profiles and extruding, or modifying existing faces.1 weekly downloads
RxCalc is a calculator for the analysis of multi-stage receiver.2 weekly downloads