you need to model the atmosphere as environment, heat flow, wicking action, chemical reactions, fluid dynamics under gravity. Then model human perception to turn the spectral radiance into a perceived shape.
https://arxiv.org/pdf/1803.10400
But its not trivial at all, its a complex fluid dynamics problem. I stumbled upon all the "coupled candle oscillators" literature when I was looking for a shortcut to a semi-physical candle model. But there is no easy way out...
The candle shape on earth is caused by the weight of the air.
I've never found one myself (most of them have a better candle simulation chip than that), but they are apparently out there.
In between they used dedicated ASICS: https://cpldcpu.com/2013/12/08/hacking-a-candleflicker-led/
And more recently simply microcontrollers: https://cpldcpu.com/2024/01/14/revisiting-candle-flicker-led...
Single use Vape-pens too. Some of those have displays and Bluetooth.
Insane.
btw, slightley related: https://cpldcpu.com/2020/06/15/building-a-chaotic-oscillator...
The “car alarm sequence” of 10s patterns was just the self-test demo program for the sound chip.
Edit: I see the article in a sibling comment makes note of this too.
[0] https://en.wikipedia.org/wiki/Linear-feedback_shift_register
Where can I learn more about that? My google fu is failing me.
https://en.wikipedia.org/wiki/History_of_candle_making#Indus...
Are we absolutely sure we're not in "the matrix" ?
docsaintly•3d ago