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Brandon's Semiconductor Simulator

117 dominikh 12 5/10/2025, 12:37:48 AM brandonli.net ↗

Comments (12)

em3rgent0rdr · 5h ago

When spice simulation isn't deep enough... Very educational to show how circuit elements work "under the hood"...for example the LC example doesn't use an L element and a C element as building blocks, but rather it is the two metal plates in close contact which form the bulk of the circuit's capacitance and it is the loop of metal itself which form the inductance.

gfody · 4h ago

Sebastian Lague has been making one of these and youtubing it, the videos are great here's the latest one https://www.youtube.com/watch?v=HGkuRp5HfH8

gblargg · 4h ago

Note that these are at very different levels of detail. Lague's is at the digital logic level, while Brandon's is some level around atoms/electrons.

petermcneeley · 3h ago

Amazing work feels very similar to Paul Falstad page https://www.falstad.com/emstatic/index.html.

This really needs a WebGPU port. Multigrid on a GPU is moderately easy.

1d22a · 2h ago

The similarity is likely not a coincidence!

> (c) Brandon Li, 2025. Ported to Javascript with the help of Paul Falstad.

paulgerhardt · 2h ago

Fun. I am reminded of the long forgotten Zachtronics semiconductor game “KOHCTPYKTOP: Engineer of the People” [1]

[1] https://www.zachtronics.com/kohctpyktop-engineer-of-the-peop...

ryani · 22m ago

This is also available (with an included Flash emulator, so playable on modern machines) in Zach's free retrospective "Zach-like" [1]

[1] https://store.steampowered.com/app/1098840/ZACHLIKE/

djmips · 46m ago

Did you know that archive supports old Flash games like this via the Ruffle Flash emulator?

https://web.archive.org/web/20160305205215/http://www.zachtr...

hteaf · 37m ago

cefFlashbrowser can do it better

spicybright · 2h ago

The UI is rough but this is very impressive!

bdbenton5255 · 1h ago

Very clean, educational and informative. Well done, from one Brandon to another!

mhh__ · 3h ago

Really sexy