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Upcycle It
Blog Upcycle It - Funeka - The Skull #5 : Ohh, it's music to my ears
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  • Author Author: sakthi.1260
  • Date Created: 24 Apr 2017 2:42 PM Date Created
  • Views 1001 views
  • Likes 2 likes
  • Comments 6 comments
  • upcycled_funeka
  • audio
  • intel edison
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Upcycle It - Funeka - The Skull #5 : Ohh, it's music to my ears

sakthi.1260
sakthi.1260
24 Apr 2017

Hi guys,

 

So planned out things... So started with the Amp and the Speakers.

 

The Amplifier board is based on PAM8403, which says its a Class D Amplifier with a 3W + 3W Output.

The speakers were from Radioshack, Each 4Ω.

 

Started to solder out.

imageimage

 

A bit of soldering, Low pass filters and some testing....

image

 

Things were smooth till I smelled it, Yep the Amp-IC was about to burn, the output terminals were short.

Hopefully I had a spare Board (Still I have no Idea why I had two, anyway everything happens for good).

 

So this time I use a Filter Capacitor for Input Power. and soldered all the components in the ProtoShield which came with the kit.image

 

image

 

image

 

Do not short the Left Ground and Right Ground with the power or Edison's GND, these are Completely Isolated and are Connected Internally in the PAM8403.

Fed the audio signal into the Edison so it could turn on a few Led which will be replaced with EL wire, Just waiting for the EL sequencer to arrive.

 

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image

 

The code :

 

void setup() {
   for(int i=2;i<6;i++)
  {pinMode(i,OUTPUT);
  }
  Serial.begin(9600);
}

void loop() {
  int L = analogRead(A0);
  int R = analogRead(A1);
    if(150<L&&L<250)
  {
    digitalWrite(2,HIGH);
  }
  if(351<L&& L<1023)
  {
     digitalWrite(2,HIGH);
     delay(10);
     digitalWrite(3,HIGH);
     delay(10);
  }
  
    if(150<R&&R<250)
  {
    digitalWrite(4,HIGH);
  }
  if(351<R&&R<1023)
  {
     digitalWrite(4,HIGH);
     delay(10);
     digitalWrite(5,HIGH);
     delay(10);
  }
    offall();
  delay(10);        // delay in between reads for stability
}

void offall()
{
  for(int i=2;i<6;i++)
  {digitalWrite(i,LOW);
  }
}

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Top Comments

  • Workshopshed
    Workshopshed over 8 years ago +3
    I'm surprised you did not use Skullcandy headphone
  • DAB
    DAB over 8 years ago +1
    Nice update and lesson to others. Always check for shorts before applying power! I do like the simple circuit and light response. Looks cool. It will be very nice to see this circuit integrated with the…
  • mcb1
    mcb1 over 8 years ago +1
    You wouldn't be the first to assume the speaker ground is the same as the supply ground. Is it just me or is there no video in the attached video, it plays and there is sound but no picture. Mark
  • mcb1
    mcb1 over 8 years ago in reply to dougw

    Thanks

    Plays on Chrome but it seems Netscape doesn't want to play it.

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  • dougw
    dougw over 8 years ago in reply to mcb1

    It plays both video and audio for me...

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  • mcb1
    mcb1 over 8 years ago

    You wouldn't be the first to assume the speaker ground is the same as the supply ground.

     

    Is it just me or is there no video in the attached video, it plays and there is sound but no picture.

     

     

    Mark

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  • DAB
    DAB over 8 years ago

    Nice update and lesson to others.

     

    Always check for shorts before applying power! image

     

    I do like the simple circuit and light response.  Looks cool.

     

    It will be very nice to see  this circuit integrated with the skull.

     

    DAB

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  • sakthi.1260
    sakthi.1260 over 8 years ago in reply to Workshopshed

    image

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