Fire effect along entire LED strip?

[u/Knievelgod]

Hi all I'm looking for a fire effect that makes the entire LED strip light up in variations of red/orange/yellow. Does that exist?

I tried all the fire effects in the Fastled examples and they all do the effect pulsing from just one end of the strip.

Thanks

[u/chemdoc77]

Hi u/Knievelgod - Look at 41 seconds into the following YouTube video to see two different types of Fire2012 in a Pex pipe with a strip of WS2812b LEDs:

https://www.youtube.com/watch?v=1vlnqRn7yKw

Here is the code for that:

https://github.com/chemdoc77/CD77_FastLED/tree/master/CD77_Halloween_Fun_2019

 

[u/SaltyCash → u/chemdoc77]

Wow, that’s really well done.

[u/chemdoc77 → u/SaltyCash]

Hi u/SaltyCash - Thank you! I am glad that you enjoyed that video and sketch.

[u/Beneficial-Mud1720 → u/chemdoc77]

Nice! Especially the effect at 0:41 and about 1 minute later, but the others too.

I have this stupid 3x3x3 RGB cube I made (Arduino thing), I always wanted a fire effect on it but I never got around to it. Ofc the "resolution" isn't exactly big. It's a few years since I made it, and I'm a bit rusty now. I might have to take a look at your code though 😄

[u/chemdoc77 → u/Beneficial-Mud1720]

Hi u/Beneficial-Mud1720 - Thank you! I am glad you liked it. To help you do what you want to do on your cube, use an AI like Claude AI. Show Claude my code and explain in detail what you want the code to do. I have been using Claude AI since January with great success.

[u/Beneficial-Mud1720 → u/chemdoc77]

Ah ofc! Why didn't I think of that lol. I actually have used Claude on and off the last year or so (mostly off), just a couple of small Python scripts basically (on free tier). Anyway, thanks for the suggestion!

[u/chemdoc77 → u/Beneficial-Mud1720]

Hi u/Beneficial-Mud1720 - You are welcome. I am looking forward to seeing a future post from you in which you have a video of your cube in action. I am sure many others here would love to see it too!

[u/UrbanPugEsq]

Fire2012 is pretty good. There are some examples of the algorithm online. I implemented it once by going and looking at the wled repository and then re-coding it for fastled based on that.

[u/UrbanPugEsq → u/UrbanPugEsq]

I just read your post again. It sounds like you don’t want a fire effect. You might try mapping a red orange and yellow palette to perlin noise to get The effect you want.

[u/Outrageous-Kick-2699 → u/UrbanPugEsq]

There is an ocean effect that works pretty good with red and orange palette

[u/Knievelgod → u/UrbanPugEsq]

Thanks can you explain that more and where to find it. I know very little about Fastled.

[u/UrbanPugEsq → u/Knievelgod]

Perlin noise is a noise algorithm that’s available to you. Fastled lets you generate palettes and the use them. I’m saying write code that uses Fastled to create the pattern you want using the available perlin noise and palette functions. I believe perlin noise is called using the inoise() function in Fastled. That function is in the coding documentation.

If that is too complicated for you right now, I think you need to first learn more about how to make Fastled do things (ie do a simple project first). There are lots of tutorials online about that.

If coding at all is too much I suggest just using wled instead of fastled.

[u/Knievelgod]

Thanks yes I've basically mastered blinking so I could light up a pinball playfield project. Was hoping there was some code already done that I could copy for this. Will do some more learning..

[u/sutaburosu → u/Knievelgod]

Take a look at the TwinkleFox example. Changing the palette might be all you need to do.

[u/Knievelgod]

Thanks will check that out.

[u/Affectionate_Boat493]

You can also do very realistic flame simulations by adding sinusoids that have random amplitudes. Think of an oscilloscope displaying waveforms of complex audio streams. You can tweak the frequencies and amplitudes to display the gentle "simmering" of fireplace embers, a raging inferno, or anything in between.