Acidmods

Console Modding------ ( Here you can talk about your favorite Consoles ) => PSP's => PSP Phat (1000) => Topic started by: akomismo01 on December 27, 2009, 07:06:07 AM

Title: lm386 using different resistors...
Post by: akomismo01 on December 27, 2009, 07:06:07 AM
I found one of the products that Val sells on pspgen and i found out that he did'nt use 191k and 30k on his product.. instead he used a 12k and 22k..

what does changing the resistors do?..

here's some images..
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fimg245.imageshack.us%2Fimg245%2F83%2Fschmalm.jpg&hash=2e8e884e3a4b4ce5a410a1cda9b1b34e4da79787)

and what does the blinking "X" mean?
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fimg269.imageshack.us%2Fimg269%2F5839%2Flm386nosole.gif&hash=416c6b52c875289a1c1da60c6ee1848fa6ab518a)

PleAse heLp.. ansWers are greatly appreciated.. :beg:
Title: Re: lm386 using different resistors...
Post by: fifarulez on December 27, 2009, 06:51:08 PM
Well for the 'X' i think it means that if it dosen't have it it wont sound.......that's my guess =/
Title: Re: lm386 using different resistors...
Post by: akomismo01 on December 27, 2009, 07:59:21 PM
up for my question..

Post Merge: December 28, 2009, 09:23:55 AM
please answer this.. :(
Title: Re: lm386 using different resistors...
Post by: GhoSt on December 28, 2009, 11:57:36 AM
hmm, my guess is his attempt to make the sound board more reactive, he is also bridging the gain and the bypass pins, not to sure what the effect of that would be.
Might test out his method.
Title: Re: lm386 using different resistors...
Post by: Blazinkaos on December 28, 2009, 03:28:08 PM
Yea me too i have 22k in my resistor box ill check and see if i have 12k witch i should have and test this as well Im curious.
Title: Re: lm386 using different resistors...
Post by: atomicareprise on December 28, 2009, 04:28:35 PM
try asking arioch..he's the one who build that board..
Title: Re: lm386 using different resistors...
Post by: Blazinkaos on December 28, 2009, 04:51:24 PM
Well i tested it I dont know the difference besides the sound out of the speaker seem lower then the way i usually do it.
Title: Re: lm386 using different resistors...
Post by: GhoSt on December 28, 2009, 07:08:23 PM
you also must bridge the bypass and gain pins.
Title: Re: lm386 using different resistors...
Post by: Blazinkaos on December 28, 2009, 10:55:55 PM
Yea i did that ghost...
Title: Re: lm386 using different resistors...
Post by: akomismo01 on December 29, 2009, 01:47:05 AM
then what happened guys?..
Title: Re: lm386 using different resistors...
Post by: Blazinkaos on December 29, 2009, 09:35:26 AM
Well from the look of this diagram it showing the loader the speaker gets the brighter the leds get witch is the same affect as the other I did it. So Im not really sure what the difference is besides the speakers not sounding as load as the other away unless Im using a crappy song.
Title: Re: lm386 using different resistors...
Post by: GhoSt on December 29, 2009, 12:34:44 PM
no what the diagram is saying is that when there is no sound the leds should be off.
Title: Re: lm386 using different resistors...
Post by: akomismo01 on December 29, 2009, 08:04:35 PM
so ghost?.. I can concLude that you can change the way that leds react by changing the resistors?..
Title: Re: lm386 using different resistors...
Post by: atomicareprise on December 29, 2009, 09:04:25 PM
not really sure if changing the value of ur resistor would affect the reactivity of ur leds..

and i think what ghost saying is reactivity of ur leds depends on ur sound output..

no sound  = no led reaction..

is that correct ghost?

correct me if i'm wrong buddy..

Title: Re: lm386 using different resistors...
Post by: Arioch_76 on December 30, 2009, 11:31:06 AM
Hi, this pspgen diagram is the best Way for red LED  (or other LED = ~1.8Volt/0.03A) , cause with the acidmods diagrams you can solder blue LED (or other LED = ~3.5Volt/0.02A) but with the red LED that don't work....
With pspgen diagram you can solder all LED colors.

And with this diagrams, if you change the value of the R1 resistor you can change the LED reactivity.
Try With R1 > 5.1K and try with 2.2K....the reactivity is really different ;)

++

PS it's not my board above , here my board:
For sound
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Farioch76.free.fr%2Flmpl.jpg&hash=19c40b94ac885a87b047a80f18866dffccb1d532)

And for Trigger reactivity
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Farioch76.free.fr%2F2npl.jpg&hash=974d1d4ddb0910deaf336c2d2876325839cd9e32)
Title: Re: lm386 using different resistors...
Post by: akomismo01 on December 30, 2009, 05:57:10 PM
@Arioch_76 thank you very much for answering.. what is the purpose for the green wire and the pink wire soldered to the ribbon hoLders?
Title: Re: lm386 using different resistors...
Post by: Blazinkaos on December 30, 2009, 07:13:32 PM
Those are for the triggers akomismo0.                         
Title: Re: lm386 using different resistors...
Post by: GhoSt on December 30, 2009, 11:10:39 PM
yea it is for if you wan't leds to be activated when the triggers are pressed, he has done it using transistors.
Title: Re: lm386 using different resistors...
Post by: akomismo01 on December 31, 2009, 12:47:12 AM
thanks for answering guys!.. i appreciate it..

Post Merge: January 01, 2010, 03:22:17 AM
additional question:.. what does bridging the bypass and gain do?..
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