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Author Topic: Sound to light circuit suggestions?  (Read 455 times)

jubal81

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Sound to light circuit suggestions?
« on: May 04, 2019, 11:59:52 AM »
Working on a project and I'd like to add some groovy light effect. Breadboarded a couple sound-to-light circuits and found that using an entire optical compressor sidechain gives a very nice and smooth result. Problem of course is it's a lot of circuit.


Wondering if anyone has suggestions for something simpler with a smooth response.
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alanp

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Re: Sound to light circuit suggestions?
« Reply #1 on: May 04, 2019, 01:50:59 PM »
If you google "Colour Organ" you'll get a few dozen circuits :)

It was a very popular disco effect.
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m-Kresol

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Re: Sound to light circuit suggestions?
« Reply #2 on: May 05, 2019, 02:03:42 AM »
there is a VU meter on THcustoms website (iirc along with the Uboat suboctave pedal). It's based around just one IC and works quite well and has a low part count.

I've built it in SMD a while back: http://www.madbeanpedals.com/forum/index.php?topic=23911.msg233946#msg233946
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Leetut

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Re: Sound to light circuit suggestions?
« Reply #3 on: May 11, 2019, 11:49:18 AM »
I used this one (LM386)




In this

<a href="http://www.youtube.com/watch?v=kYKYz5_5564" target="_blank">http://www.youtube.com/watch?v=kYKYz5_5564</a>
« Last Edit: May 13, 2019, 12:14:08 PM by Leetut »
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jubal81

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Re: Sound to light circuit suggestions?
« Reply #4 on: May 11, 2019, 12:19:57 PM »
Quote from: Leetut on May 11, 2019, 11:49:18 AM
I used this one

https://postimg.cc/ZvByBzFb

In this

https://youtu.be/kYKYz5_5564


That is spectacular! Did you do a build report thread on that?
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Leetut

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Re: Sound to light circuit suggestions?
« Reply #5 on: May 11, 2019, 04:14:25 PM »
Cheers man! I built a few to sell but haven’t figured out how to do that yet 😂
https://postimg.cc/xcXTc0Qw
« Last Edit: May 11, 2019, 04:17:05 PM by Leetut »
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Willybomb

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Re: Sound to light circuit suggestions?
« Reply #6 on: May 11, 2019, 09:55:32 PM »
I used this in my Beast Mode.  This layout can be made quite a bit smaller if you take out the second row and you're willing to wire the resistor offboard on an LED and the grounds to wherever.
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somnif

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Re: Sound to light circuit suggestions?
« Reply #7 on: May 11, 2019, 10:05:36 PM »
Quote from: Willybomb on May 11, 2019, 09:55:32 PM
I used this in my Beast Mode.  This layout can be made quite a bit smaller if you take out the second row and you're willing to wire the resistor offboard on an LED and the grounds to wherever.

I'm assuming that's a 386? (or some similar audio amp?)
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HamSandwich

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Re: Sound to light circuit suggestions?
« Reply #8 on: May 11, 2019, 10:06:22 PM »
Quote from: Leetut on May 11, 2019, 11:49:18 AM
I used this one

https://postimg.cc/ZvByBzFb

In this

https://youtu.be/kYKYz5_5564

That's so cool. How do the LED's light up at different times like that? Seems like chaos in a great way.
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Leetut

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Re: Sound to light circuit suggestions?
« Reply #9 on: May 12, 2019, 02:59:21 AM »
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chromesphere

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Re: Sound to light circuit suggestions?
« Reply #10 on: May 15, 2019, 12:19:14 AM »
sound to light fabbed pcb if you guys need it (scroll down):
https://oshpark.com/profiles/diyguitarpedals
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