Author Topic: Headphone hacking  (Read 2434 times)

0 Members and 1 Guest are viewing this topic.

Offline airman00Topic starter

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 3,650
  • Helpful? 21
  • narobo.com
    • Narobo.com - Mechatronics and related
Headphone hacking
« on: March 15, 2008, 08:33:12 PM »
How much voltage does a headphone speaker get?

I want to play around with them a bit  and I want to do ADC to read the values .

Should the multimeter pick up different votlages from the speaker or would it be same voltage througout?

If it would be same voltage throughout how would I be able to get values from the headphones? 
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline karlis

  • Full Member
  • ***
  • Posts: 79
  • Helpful? 0
    • sctg clans website
Re: Headphone hacking
« Reply #1 on: March 16, 2008, 08:07:58 AM »
i`m not quite shure but it could be ~5v more or less..

amm can i ask what u want to do with headphones ? make something like sonar ?

sorry for my bad language

Offline airman00Topic starter

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 3,650
  • Helpful? 21
  • narobo.com
    • Narobo.com - Mechatronics and related
Re: Headphone hacking
« Reply #2 on: March 16, 2008, 08:21:02 AM »
no I just want a computer to control a microcontroller using the headphone port
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline izua

  • Supreme Robot
  • *****
  • Posts: 682
  • Helpful? 0
    • izua electronics
Re: Headphone hacking
« Reply #3 on: March 16, 2008, 08:49:10 AM »
the output of a soundcard is line voltage, somewhere ~1 V, or +-0.5.
But you should check with the soundcard manufacturer's specs.
Check out my homepage for in depth tutorials on microcontrollers and electronics.

Offline airman00Topic starter

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 3,650
  • Helpful? 21
  • narobo.com
    • Narobo.com - Mechatronics and related
Re: Headphone hacking
« Reply #4 on: March 16, 2008, 08:59:51 AM »
the output of a soundcard is line voltage, somewhere ~1 V, or +-0.5.
But you should check with the soundcard manufacturer's specs.

OK but would I get changing voltages based on the sound played?
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline karlis

  • Full Member
  • ***
  • Posts: 79
  • Helpful? 0
    • sctg clans website
Re: Headphone hacking
« Reply #5 on: March 16, 2008, 10:45:16 AM »
i`m not realy shure but voltage should change when sounds frequence changes aka hi tones and low tones..

Offline airman00Topic starter

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 3,650
  • Helpful? 21
  • narobo.com
    • Narobo.com - Mechatronics and related
Re: Headphone hacking
« Reply #6 on: March 16, 2008, 01:50:11 PM »
I need to be able to tell which tone( ten different tones)  is played when the computer or iPod outputs a sound or signal to the speakers ( whic hare connected to the MC)

Any ideas ,I assume PWM to soundcards are not possible , right

Please help
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline ed1380

  • Supreme Robot
  • *****
  • Posts: 1,478
  • Helpful? 3
Re: Headphone hacking
« Reply #7 on: March 16, 2008, 02:40:58 PM »
I've heard of soundcard being used for osciliascopes. i'm guessing they can
Problems making the $50 robot circuit board?
click here. http://www.societyofrobots.com/robotforum/index.php?topic=3292.msg25198#msg25198

Offline airman00Topic starter

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 3,650
  • Helpful? 21
  • narobo.com
    • Narobo.com - Mechatronics and related
Re: Headphone hacking
« Reply #8 on: March 16, 2008, 06:02:17 PM »
I've heard of soundcard being used for osciliascopes. i'm guessing they can

yea I have one of those

but I want output not input
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

 


Get Your Ad Here

data_list