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AcidMods Resources ----- ( These are helpful tools for modding ) => Electronics Projects => Topic started by: akomismo01 on June 15, 2009, 04:18:25 AM

Title: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386? SOLVed
Post by: akomismo01 on June 15, 2009, 04:18:25 AM

WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?.. AND  WHAT IS THEIR ADVANTAGES.. I HAVE A PHAT..

 AND 0603 LEDS THE SAME SIZE AS THE LEDS USED IN PHONES?.. IM SORRY TO ASK THIS BUT IM STILL A NEWBIE AND I WANT BADLY TO MOD MY PSP..

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: ~:Dhruv:~ on June 15, 2009, 04:37:45 AM

ya i believe the 0603 leds are the ones used under the keypad.....
lm386 gives u more sound reactive leds if u understand what i mean....

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: DarkShot on June 15, 2009, 11:54:44 AM

Quote from: ~:Dhruv:~ on June 15, 2009, 04:37:45 AM

lm386 gives u more sound reactive leds if u understand what i mean....

Ya got that mixed up there Dhurv. I'll explain: Direct contact stand for just that. You directly connect the LEDs to the speaker connections. The LM386 method uses a sound amp (an LM386) and a couple resistors. Each have their trade-offs: Direct contact are easier to do for a first mod, and they are much, much more reactive than the LM386 one. The downfall is that you need an additional switch to be able to turn it off. The sound amp method is much brighter, and you don't need an additional switch. The downfall here is the LEDs aren't very reactive.

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: ~:Dhruv:~ on June 16, 2009, 02:16:14 AM

Quote from: DarkShot on June 15, 2009, 11:54:44 AM

Ya got that mixed up there Dhurv. I'll explain: Direct contact stand for just that. You directly connect the LEDs to the speaker connections. The LM386 method uses a sound amp (an LM386) and a couple resistors. Each have their trade-offs: Direct contact are easier to do for a first mod, and they are much, much more reactive than the LM386 one. The downfall is that you need an additional switch to be able to turn it off. The sound amp method is much brighter, and you don't need an additional switch. The downfall here is the LEDs aren't very reactive.

Oops ! i meant brighter... argghh ! Anyway , i did get mixed up between 2n2222 and lm386 ...
Thanks for correcting me Darkshot.

Also my name id DHRUV not DHURV

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: atomicareprise on June 16, 2009, 02:31:19 AM

so what really is the difference between the leds used in cellphones and the 603?

i really can't tell what's the forward voltage of the ones used in cellphones...


though it's way cheaper than the 603's :tup:

direct contact is the way to go buddy especially if you're just starting to learn...

enjoy your stay here at AM..

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: akomismo01 on June 16, 2009, 03:07:30 AM

thanks for the help guys.. i really appreciate it.. i hope i can repay you someday..

one last thing.. does lm386 keep your leds bright even when the volumes is down?..

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: ~:Dhruv:~ on June 16, 2009, 04:52:40 AM

AFAIK NO....

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: DarkShot on June 16, 2009, 08:14:40 PM

Quote from: ~:Dhruv:~ on June 16, 2009, 02:16:14 AM

Also my name id DHRUV not DHURV

Wooops Sorry there Dhruv

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: Blazinkaos on June 16, 2009, 09:02:25 PM

Thats where i use to get my leds from(cell phone). But they seem dime so i started buying leds.

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: akomismo01 on June 17, 2009, 05:20:14 AM

one last thing.. does lm386 keep your leds bright even when the volumes is down?.. <<<=== HELP..(^^,)

do you need to compute the proper resistors on lm386?.. can someone give me a specific example?..

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: Blazinkaos on June 17, 2009, 08:20:01 PM

No cuz the LM386 gives sound boost and without the sound the leds wont light as bright so you have to have the sound up to get the brightness from your leds.

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: akomismo01 on June 18, 2009, 03:38:09 AM

how do you compute the resistors in lm386?.. i only know the direct led mod.. and are 380mcd a good one?.. or 80 is good?.. whats their difference?..

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: DarkShot on June 19, 2009, 06:52:35 PM

Higher mcd number means brighter LEDs

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: Blazinkaos on June 20, 2009, 09:54:24 AM

Look for the tut for using the LM386 i dnt know the links destinations just use the search and there should be a lot of picks people showing how they did it.

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: akomismo01 on June 21, 2009, 02:06:17 AM

thanks everyone.. so when using lm386 you get brighter leds and direct contact isn't as bright as using lm386?.. am i ryt?..:)

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386?...
Post by: Blazinkaos on June 21, 2009, 08:38:49 AM

You got it man.

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386? SOLVed
Post by: FreakhandZ on March 26, 2012, 12:01:58 AM

Is there any tutorial about it. . . . . .??
 :dntknw:

Title: Re: WHAT IS THE DIFFERENCE IN DIRECT CONTACT SOUND REACTIVE AND USING LM386? SOLVed
Post by: Blazinkaos on March 27, 2012, 06:33:30 PM

There should be just look in the search.