[sdiy] Qspice, anyone tried it?

[Ben Stuyts]

Totally different UI's for LTspice and KiCad of course. I hate the UI in LTspice because the complete toolbar is missing on the Mac version. Adding models to ngspice in Kicad is pretty simple: Open the properties of the regular symbol, add simulation model and browse to e.g. the downloaded pspice model from TI. No messing with creating a symbol like in LTspice. You have to remember to use the Spice symbols for your ground, and I always forget that.

I have never compared the results between these two, could be interesting. With regards to UI, KiCad is the clear winner. But you need to learn a new tool (ngspice), which prevented me from using it for the longest time. :-)

It looks like ngspice is actively developed, but my KiCad v8 is two versions behind. (Perhaps they only update it on major updates, so that would be yearly.)

Ben


> On 29 Dec 2024, at 17:34, Steve via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> 
> Ah, how does the one in KiCAD compare to good ol' LTspice?
> 
> 
> On 28.12.2024 18:59, Ben Stuyts wrote:
>> For one thing it’s windows-only, so no, I can’t use it. Still use the somewhat outdated Mac version of LTspice. I now tend to use KiCAD’s built in ngspice every now and then, as it’s already in KiCAD. (https://www.kicad.org/discover/spice/)
>> 
>> Ben
>> 
>> 
>>> On 28 Dec 2024, at 18:39, Steve via Synth-diy <synth-diy at synth-diy.org> <mailto:synth-diy at synth-diy.org> wrote:
>>> 
>>> Hey list,
>>> 
>>> the guy who originally made LTspice, IIRC, some time ago started a supposedly improved, in several regards, simulator named Qspice. Working for a different company, I heard rumors stock models are hence not by LT but the other vendor... perhaps not super important to everyone.
>>> Supposedly, you can code simulated elaborate functionality in C++ and Verilog.
>>> 
>>> Here's something about what's different, and an article geared towards LTspice users.
>>> 
>>> If anyone on here is familiar with both to feel like commenting anything the articles don't mentionm, please do.
>>> 
>>>  
>>> https://hackaday.com/2023/08/25/qspice-picks-up-where-ltspice-left-us/
>>>  
>>> 
>>> Introduction to QSPICE for LTspice Users, Part 1
>>> https://www.allaboutcircuits.com/technical-articles/introduction-to-qspice-for-ltspice-users-part-1
>>>  
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> 
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