Wiring an iPod to LEDs

[2minutehate]

This is more of a general question but, is it at all possible to wire,
let's say, an iPod to a series of LEDs that you'd pick up at RadioShack?
Something along the lines of having the LEDs emit in response to the
music playing on the iPod, similar to how a stereo's LED indicator will
pulses in response to what;s playing. If it is possible, how difficult
(and costly) would this endeavor be? Thank for any help you can give.

 

[Dave]

On Mon, 25 Oct 2004 01:29:40 -0400, 2minutehate
<solarpoweredx@yahoooo.com> wrote:

This is more of a general question but, is it at all possible to wire,
let's say, an iPod to a series of LEDs that you'd pick up at RadioShack?
Something along the lines of having the LEDs emit in response to the
music playing on the iPod, similar to how a stereo's LED indicator will
pulses in response to what;s playing. If it is possible, how difficult
(and costly) would this endeavor be? Thank for any help you can give.

A general answer; Yes, it is perfectly possible.

As to how difficult and/or costly, it depends. If you simply want
something that flashes in time with the music, not too hard & only a
few components, so only a few dollars. If you want a display that
flashes different colour leds for bass, mid range & treble, then
complexity and component count goes up, so does cost.

In either case, the component cost would probably be fairly low but if
you have to pay someone to design the circuit it could prove
expensive.

HTH

Dave

 

[2minutehate]

In article <evbpn0lt4kceqeeh3b6u25gcbln0mb7esq@4ax.com>,
Dave <daveg50_8@NotCoolMail.invalid> wrote:

On Mon, 25 Oct 2004 01:29:40 -0400, 2minutehate
solarpoweredx@yahoooo.com> wrote:

This is more of a general question but, is it at all possible to wire,
let's say, an iPod to a series of LEDs that you'd pick up at RadioShack?
Something along the lines of having the LEDs emit in response to the
music playing on the iPod, similar to how a stereo's LED indicator will
pulses in response to what;s playing. If it is possible, how difficult
(and costly) would this endeavor be? Thank for any help you can give.


A general answer; Yes, it is perfectly possible.

As to how difficult and/or costly, it depends. If you simply want
something that flashes in time with the music, not too hard & only a
few components, so only a few dollars. If you want a display that
flashes different colour leds for bass, mid range & treble, then
complexity and component count goes up, so does cost.

In either case, the component cost would probably be fairly low but if
you have to pay someone to design the circuit it could prove
expensive.

HTH

Dave

Like you said, I'm trying to keep this as simple as possible. So just
having the LEDs emit (not really concerned about differentiating between
bass, treble, etc) would entail what exactly? I'm just trying to give my
dorm room a little bit of personality, and finding the components
shouldn't be a problem given my location (New York City). Thanks.

 

[Geoff C]

2minutehate <solarpoweredx@yahoooo.com> wrote in news:solarpoweredx-
5C3A76.01294025102004@individual.net:

This is more of a general question but, is it at all possible to wire,
let's say, an iPod to a series of LEDs that you'd pick up at RadioShack?
Something along the lines of having the LEDs emit in response to the
music playing on the iPod, similar to how a stereo's LED indicator will
pulses in response to what;s playing. If it is possible, how difficult
(and costly) would this endeavor be? Thank for any help you can give.

If you are handy with electronics and soldering you could try something
like this...

http://www1.jaycar.com.au/images_uploaded/LM3915.PDF

But it sounds like you are not so the next step is to go to an electronics
shop that sells components and electronic kits. You should be asking for a
"LED Bargraph Display". The LM3915 IC from NS is the basis for some of
these simple devices. If you can't build a kit then you might consider
buying a whole unit. It is not entirely trivial though... You can't just
wire up a string of LED's and resistors etc.

 

[Zebra]

Wow! That's a detail description for LM3915.

"Geoff C" <notinterestedin@spa.comm> ŚbślĽó
news:Nsffd.9254$pl.101367@nasal.pacific.net.au ¤¤źśźg...

2minutehate <solarpoweredx@yahoooo.com> wrote in news:solarpoweredx-
5C3A76.01294025102004@individual.net:

This is more of a general question but, is it at all possible to wire,
let's say, an iPod to a series of LEDs that you'd pick up at RadioShack?
Something along the lines of having the LEDs emit in response to the
music playing on the iPod, similar to how a stereo's LED indicator will
pulses in response to what;s playing. If it is possible, how difficult
(and costly) would this endeavor be? Thank for any help you can give.




If you are handy with electronics and soldering you could try something
like this...

http://www1.jaycar.com.au/images_uploaded/LM3915.PDF

But it sounds like you are not so the next step is to go to an electronics
shop that sells components and electronic kits. You should be asking for a
"LED Bargraph Display". The LM3915 IC from NS is the basis for some of
these simple devices. If you can't build a kit then you might consider
buying a whole unit. It is not entirely trivial though... You can't just
wire up a string of LED's and resistors etc.

 

[JanS]

Hi
I suggest that you buld a LED VU meter, like this one:
http://www.circuitsonline.net/circuits/view/59

if you want a moving point, pin 9 is to ground (like now), but is you want a
bar, then connect pin 9 to pin 3. Pin 3 has to go to Vcc, in both cases

Greetz
Jan
--
http://www.dirtylawn.tk
Check it out!

 

[C3]

It's possible to do this with some LEDs, caps, and resistors, is it not? If
it is, can someone please explain how it is done. I am interested to know.



"2minutehate" <solarpoweredx@yahoooo.com> wrote in message
news:solarpoweredx-5C3A76.01294025102004@individual.net...

This is more of a general question but, is it at all possible to wire,
let's say, an iPod to a series of LEDs that you'd pick up at RadioShack?
Something along the lines of having the LEDs emit in response to the
music playing on the iPod, similar to how a stereo's LED indicator will
pulses in response to what;s playing. If it is possible, how difficult
(and costly) would this endeavor be? Thank for any help you can give.