It is possible in LTspice IV to create a new symbol from scratch for a third-party model but who has the time? Follow these easy steps to generate a new symbol for a third-party model defined in a subcircuit (.SUBCKT statement).
- Open the netlist file that contains the subcircuit definitions in LTspice (File > Open or drag file into LTspice)
- Right-click the line containing the name of the subcircuit, and select Create Symbol:
- Edit the symbol if needed and save.
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To use the new symbol (and associated third party model) in a schematic, select the symbol from the AutoGenerated directory in the component library (F2) and place it in your schematic:
By using the automatic symbol generation you can focus on your simulations, not creating new symbols. For a more information on how to import third party models that use intrinsic SPICE device (.MODEL statement) see the video at www.linear.com/solutions/1083.
| Developer(s) | EasyEDA |
|---|---|
| Initial release | August 2013; 6 years ago |
| Stable release | |
| Platform | Linux, macOS, Windows |
| Available in | 10 languages |
en, fr, de, pl, jp, ru, es, se, ua, zh | |
| Type | EDA software |
| License | Commercial software |
| Website | easyeda.com |
EasyEDA is a web-based EDA tool suite that enables hardware engineers to design, simulate, share - publicly and privately - and discuss schematics, simulations and printed circuit boards. Other features include the creation of a bill of materials, Gerber files and pick and place files and documentary outputs in PDF, PNG and SVG formats.
EasyEDA allows the creation and editing of schematic diagrams, SPICE simulation of mixed analogue and digital circuits and the creation and editing of printed circuit board layouts and, optionally, the manufacture of printed circuit boards.[1][2]
Subscription-free membership is offered for public plus a limited number of private projects. The number of private projects can be increased by contributing high quality public projects, schematic symbols, and PCB footprints and/or by paying a monthly subscription.
Registered users can download Gerber files from the tool free of charge but for a fee, EasyEDA offers a PCB fabrication service. This service is also able to accept Gerber file inputs from third party tools.[3]
History[edit]
In June 2010, Dillon He and Eric Cui started a survey of EDA tools for a hardware project of their own. The search for an EDA tool capable of schematic capture, circuit simulation and printed circuit board layout saw limited success, and He concluded that designing their own EDA tool would be beneficial.[4]
Their key goals were that the tools be platform independent, free, easy to learn and to use.
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The first version of the toolsuite appeared online in August 2013 and since officially launching in March 2014[5][6] the tool has developed rapidly[7][8][9][10] with several major revisions and enhancements[11][12]
EasyEDA first received external investment in January and attracted more in November 2015.
Features[edit]
EasyEDA is an integrated browser-based tool for schematic capture, SPICE circuit simulation, based on Ngspice, and PCB layout.[2][3]
Import from Altium Designer, CircuitMaker, Eagle, Kicad and LTspice file formats as well as generic SPICE netlists is supported. SPICE netlists can be exported to third party simulation tools and export of PCB netlists in Altium, PADS and FreePCB formats is also supported.[13]
The ability to import LTspice schematics and symbols provides a useful way to port schematics to PCB layout without having to redraw them from scratch.
Once Gerber files of a completed PCB design have been downloaded and checked - using a third party Gerber viewer - the user is free to choose a PCB manufacturer or, for a fee, they can submit the Gerbers directly to EasyEDA for manufacture. Alternatively, printable PCB layer image output is also supported in PDF, PNG and SVG formats for home PCB etching.
The tool also includes sharing and collaboration features and a comprehensive parts and an expanding SPICE model library.
See also[edit]
References[edit]
- ^Sonic (2014-06-25). 'EasyEDA gives makers pcb layout in a browser'. seeedstudio.com. Retrieved 2015-12-16.
- ^ abWilliams, Al (August 21, 2015). 'A Tale of Two Browser PCB Tools'. Hackaday. Retrieved January 30, 2020.
- ^ abWilliams, Al (December 5, 2017). 'EasyEDA Two Years Later'. Hackaday. Retrieved January 30, 2020.
- ^Yuan, Zhang (2014-07-18). 'Easy EDA：在线创客软件服务是未来的趋势 (Easy EDA: Online creating customer service is the future of software)'. leiphone.com. Retrieved 2015-12-17.
- ^He, Dillon (2014-03-05). 'EasyEDA Launches Web-Based EDA: Integrates Schematic Capture, Mixed Mode Circuit Simulation, PCB Layout and Supply' (Press release). prweb.com. Retrieved 2015-11-28.
- ^Kraft, Caleb (2014-03-19). 'Easy Design in Your Browser With EasyEDA'. eetimes.com. Retrieved 2015-12-17.
- ^Payne, Daniel (2014-04-08). 'A New, Free, Web-Based EDA Toolset in the Cloud'. semiwiki.com. Retrieved 2015-11-29.
- ^Jojo (2014-04-14). 'Draw Your Circuits and Simulate them Online for Free using EasyEDA'. circuitstoday.com. Retrieved 2015-11-29.
- ^Fierman, Andy (2014-05-07). 'EasyEDA: Free online EDA – Product how-to'. edn.com. Retrieved 2015-11-29.
- ^Schneider, David (2014-06-26). 'Cloud-based Electronic-Design Tools Gain Traction - IEEE Spectrum'. Spectrum.ieee.org. Retrieved 2015-11-29.
- ^Williams, Al (2015-08-21). 'A Tale of Two Browser PCB Tools - Hackaday'. Hackaday.com. Retrieved 2015-11-28.
- ^Key, Robert (2015-10-12). 'FREE Electronic Schematic Software Is Now Available For Circuit Simulation Online' (Press release). datsyn.com. Retrieved 2015-12-15.
- ^Tawil, Yahya (19 November 2017). 'A Full Review of EasyEDA: A Circuit EDA Online Tool'. Atadiat. Retrieved January 30, 2020.