Need Help With Sound Acivated LED Project

killivolt · May 28, 2014

4pyros said:
We assume this symbol is power ground;

And that they are all tied together with the negative of the supply.
We do not connect all of them to keep schematics uncluttered.

Thanks, kv

killivolt · May 28, 2014

Jesse6131994 said:
I understand that but I'm doing it so that I could understand the schematic better. I'm new to this stuff just trying to tackle this project.

Your doing great what ever helps you I guess; but this might help you more in the future.

4pyros · May 28, 2014

Yes all schematics use that ground symbol.
The drawing you posted in your 1st post was a pictorial.

Jesse6131994 · May 28, 2014

killivolt said:
Your doing great what ever helps you I guess; but this might help you more in the future.

Thanks for the help but I have a couple more questions.
-What wire do I use as a grounding wire?
-What wire do I use for connection wire?
-What will happen if I choose to still use the LEDs I ordered? (https://www.amazon.com/gp/product/B007RO9X82/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1)
-I'm a little confused about the music source input. The line parallel of the ground line for it that is connected to the 100k resistor. How does that hook up to my computer?

4pyros · May 28, 2014

-What wire do I use as a grounding wire?
-What wire do I use for connection wire?

You can use just about any wire for the power and signal lines, like network cable or something.

killivolt · May 28, 2014

4pyros said:
You can use just about any wire for the power and signal lines, like network cable or something.

I think? he means clarify what points he needs to connect too! he doesn't get where each of them go. He doesn't read schematic.

4pyros · May 28, 2014

What will happen if I choose to still use the LEDs I ordered? (https://www.amazon.com/gp/product/B007RO9X82/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1)

We told you they will never change colors so its a wast of money.
If you have nothing else try them nothing bad will happen they should just be one color.

Jesse6131994 · May 28, 2014

killivolt said:
I think? he means clarify what points he needs to connect too! he doesn't get where each of them go. He doesn't read schematic.

I understand how the circuit comes together now I'm pretty sure. I'm going to look up all the parts on amazon and order them.

Jesse6131994 · May 28, 2014

4pyros said:
We told you they will never change colors so its a wast of money.
If you have nothing else try them nothing bad will happen they should just be one color.

Okay. When I order new parts on amazon I'll consider new LED lights as well.

4pyros · May 28, 2014

I'm a little confused about the music source input. The line parallel of the ground line for it that is connected to the 100k resistor. How does that hook up to my computer?

Same as your 1st circuit.
The bare wires from the jack that plugs into the headphone jack on your speaker goes to ground.
One or the other of the two insulated wires goes to the top of the "100k resistor" which is a potentiometer, otherwise known as a volume control.

Fixed to indicate the audio source should be connected across the 100K potentiometer and the wiper goes to the LM386.

Jesse6131994 · May 28, 2014

4pyros said:
Same as your 1st circuit.
The bare wires from the jack that plugs into the headphone jack on your speaker goes to ground.
One or the other of the two insulated wires goes to the wiper of the "100k resistor" which is a potentiometer, otherwise known as a volume control.

Oh okay good. Do you think you could help find the right stuff on amazon? This is some of the stuff I found but I'm not 100% sure if it's the right stuff.

I need 9V battery (https://www.amazon.com/Energizer-Al...TF8&qid=1401319844&sr=8-4&keywords=9v+battery)
100uF Capacitors (https://www.amazon.com/Quality-CAPA...id=1401319922&sr=8-4&keywords=100uf+capacitor)
47nF Capacitors (https://www.amazon.com/10pcs-0-047u...=1401319990&sr=8-6&keywords=0.047uf+capacitor)
100k Resistor (https://www.amazon.com/E-Projects-1...&qid=1401320364&sr=1-1&keywords=100k+resistor)
New LED Lights (https://www.amazon.com/microtivity-...01320482&sr=8-1&keywords=blue+led+light+diode)
LM386 (https://www.amazon.com/Through-Audi...?ie=UTF8&qid=1401320550&sr=8-1&keywords=lm386)

killivolt · May 28, 2014

Jesse6131994 said:
Oh okay good. Do you think you could help find the right stuff on amazon? This is some of the stuff I found but I'm not 100% sure if it's the right stuff.

100k Resistor (https://www.amazon.com/E-Projects-100k-Resistors-Watt-Pieces/dp/B00B5RWC4Y/ref=sr_1_1?s=industrial&ie=UTF8&qid=1401320364&sr=1-1&keywords=100k resistor)

More like this it has 3 terminals. https://www.amazon.com/Potentiomete..._indust_3?ie=UTF8&refRID=01JYQMBNBB95W3V5731E

Edit: Notice it has 3 terminals one is going to the audio source which is normally your Left or Right audio. That means that one side of the 3 terminals and doesn't matter which is connected to the pot; the middle terminal is going to go to terminal 3 of the Op-Amp and the 3rd will go to ground.

4pyros · May 28, 2014

Those LEDs should be fine.

Jesse6131994 · May 28, 2014

killivolt said:
More like this it has 3 terminals. https://www.amazon.com/Potentiomete..._indust_3?ie=UTF8&refRID=01JYQMBNBB95W3V5731E

Other then that, everything is good? 250V 47nF and 50V 100uF?

4pyros · May 28, 2014

killivolt said:
More like this it has 3 terminals. https://www.amazon.com/Potentiomete..._indust_3?ie=UTF8&refRID=01JYQMBNBB95W3V5731E

That one is way to expensive try this one;
https://www.amazon.com/Linear-Taper...1401321273&sr=1-2&keywords=Potentiometer+100K

Jesse6131994 · May 28, 2014

4pyros said:
That one is way to expensive try this one;
https://www.amazon.com/Linear-Taper-watt-100K-Potentiometers/dp/B0002KRE2U/ref=sr_1_2?s=industrial&ie=UTF8&qid=1401321273&sr=1-2&keywords=Potentiometer 100K

Ooh nice find! But everything else is good to go?

4pyros · May 28, 2014

Cheaper .047 cap;
https://www.amazon.com/ECU-S1H473ME...1401321623&sr=8-47&keywords=0.047uf+capacitor

4pyros · May 28, 2014

Rest is good.

Jesse6131994 · May 28, 2014

4pyros said:
Rest is good.

Okay thanks so much for all the help. I really appreciate it.

4pyros · May 28, 2014

Jesse6131994 said:
Okay thanks so much for all the help. I really appreciate it.

Then give me some likes please!

Need Help With Sound Acivated LED Project

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