MP3 player hacking.

ghosstt · Post by **ghosstt** » Tue Mar 13, 2007 3:36 pm

hi, i have an MP3 player i dont use anymore... i was woundering if its possible to hack it and have it run off of my laptops battery instead of the AAA it needs. will put pics soon

demonofaj · Post by **demonofaj** » Tue Mar 13, 2007 3:42 pm

Ok, this is extremely plausible. Can you go into detail like...uh, how many AAA's it takes?

ghosstt · Post by **ghosstt** » Tue Mar 13, 2007 3:56 pm

just one single AAA. i took everything out of the case. heres some pics

EDIT: btw, i plan on intergrating it into my laptop. my laptop it really crappy, (2.8GB HD)(pent1). this is just a little project for me.

dam, my webcam is good quality

Post by **marshallh** » Tue Mar 13, 2007 4:15 pm

If you can find any free space inside your laptop, I'll be amazed.

Still, to get the voltage you need, you'll have to build a LM317 regulator circuit to get a 1.5v output to run the MP3 player.

ghosstt · Post by **ghosstt** » Tue Mar 13, 2007 5:24 pm

marshallh wrote:If you can find any free space inside your laptop, I'll be amazed.

Still, to get the voltage you need, you'll have to build a LM317 regulator circuit to get a 1.5v output to run the MP3 player.

trust me, you havnt seen this laptop

ill post some pics later. how would i go about wiring the speaker of the laptop to the mp3? i just want to kno where to wire it to. i think ill put a switch to go between mp3 and laptop

ghosstt · Post by **ghosstt** » Wed Mar 14, 2007 4:28 pm

bump please..

how would i mod it to run directly to the speakers?

dragon · Post by **dragon** » Wed Mar 14, 2007 4:47 pm

I have two ideas that you could try.

1 wire it to the main speaker.

or

2 wire it to the mic input so that you can change the volume on the computer.

Thats just my idea

s tell me what you think of them.

Jongamer · Post by **Jongamer** » Wed Mar 14, 2007 5:18 pm

does that happen to be a ZEN? or a MP3 player Made by Creative.

ghosstt · Post by **ghosstt** » Wed Mar 14, 2007 5:23 pm

^^nope, its a yepp T5.

i want to wire it to the main speaker, but how..

Jongamer · Post by **Jongamer** » Wed Mar 14, 2007 5:24 pm

ohh it just looked so much my my MP3 player from the inside, mines a ZEN Nano plus

twilightprincess · Post by **twilightprincess** » Thu Mar 15, 2007 2:15 am

Jongamer wrote:ohh it just looked so much my my MP3 player from the inside, mines a ZEN Nano plus

i got a zen vision 30 gig (way better than an ipod)

Electric Rain · Post by **Electric Rain** » Thu Mar 15, 2007 4:13 am

This sounds like a fun little project. Should be real easy too. First off, get yourself a 1.5V regulator. To avoid having to use adjustable regulators, thus adding additional parts, I was able to find a 1.5V fixed 100mA regulator in a TO-92 case (like the size of a transistor). It requires no external parts (not even smoothing caps), so it's just as easy to use as a 7805. Oh, and it's only $0.41 on Mouser.

Check it out. Here's the datasheet for it. Power it with a 5V line on your laptop. Shouldn't be too hard to find.

Okay, so that takes care of power. As far as the audio goes, I would wire the audio output directly to the line in port on your laptop, not the mic input, if you can help it. This will allow you to adjust the volume of the MP3 player in the Windows sound mixer independently of your actual laptop sounds. It also allows you to take advantage of your laptop's amp. The amp in the MP3 player might not even be powerful enough to drive your laptop speakers by themselves anyway.

Does this answer any of your questions or does it just leave you more confused?

(I don't know how much you know about electronics 'n stuff... so...)

ghosstt · Post by **ghosstt** » Thu Mar 15, 2007 3:28 pm

^thanks for the help, but i didnt go that way..

instead im going to run it off the AAA socket its got. i wired it up to the speaker and everything works great. i took the cheap way out.. i actually just soldered the wires onto tabs that were visible on the headphone input. one on the top of it, and one were it connects to the board. it actually works. now i just need to cut out a window in the laptop.