Circuit that controls quite a few LEDs

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Circuit that controls quite a few LEDs

Postby Elijah_C » 14 Apr 2018, 08:32

Yeah yeah I know there are tons of examples of music driven LED circuits out there, but they mainly control just one LED or one string of them.

I want to make a circuit that will control quite a few LEDs, with each LED at a different range of frequencies.

And I will use Linear-Amplifiers LT1366 (see http://www.kynix.com/Detail/238847/LT1366.html) this Instrumentation, a class of OP Amplifiers to link my circuit. :horsey:

To do this, I am planning on making an array of band pass filters. Each filter would drive a different LED (or string, or something else)... through a BJT perhaps? Here is a quick sketch of what I am thinking.

Image

Guesssed my biggest problem with an analog approach for many channels will be achieving the correct bandpass filter characteristics, so that the individual frequencies do not overlap too much...

Besides I might add in a high and low pass filter in the end, but I'll decide that later.

Anyway, would this work? I am wondering if you have advice for me, or maybe some different tricks that could reduce the complexity of this project. Are there certain things to watch out for, such as my source not being able to supply enough power to my filters, ect?

Thanks in advance! I really appreciate any help!
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Re: Circuit that controls quite a few LEDs

Postby r-noxious » 17 Apr 2018, 00:09

Use an Arduino and ws2812b leds.
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Re: Circuit that controls quite a few LEDs

Postby ppluis0 » 17 Apr 2018, 01:30

I'm firmly against to employ micro controllers to do things that can be done easy by analog methods !!!!!

Try to breadboard this circuit and see what happens: https://www.jameco.com/Jameco/workshop/ ... -fig11.jpg

Cheers,
Jose
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Re: Circuit that controls quite a few LEDs

Postby Elijah_C » 17 Apr 2018, 04:06

Thanks for all of your feedbacks :hug:
Maybe could also take a digital approach using an arduino like this one:
http://www.whatimade.today/lets-make-some-signal-processing-with-an-arduino/

I guss the biggest problem with an analog approach for many channels will be achieving the correct bandpass filter characteristics
so that the individual frequencies do not overlap too much..
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