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Go Back   Head-Fi: Covering Headphones, Earphones and Portable Audio > Misc.-Category Forums > DIY (Do-It-Yourself) Discussions

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Old 06-14-2008, 06:43 PM   #1171 (permalink)
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I am pleased to announce that I just joined the iPhone club. It's been really annoying having to carry an iPod touch and my Palm Treo 680 around in the same pocket, but now no more! I am currently transferring music and some awesome ringtones to my new baby, so huzzah for me. And as you probably all have guessed, I will be figuring a my way into the iPhone for a possible diyModPhone (any better nomenclature suggestions?). Don't hold your breath, as you all may have noticed that my work travels at a snail's pace.

As such, anyone interested in an iPod touch?

edit: Also, to get things rolling, I just connected my iPhone to my PIMETA, which didn't actually work at first. Then I remembered this thread which concluded that pin 11 (serial GND) had to be connected to any of the GNDs in the dock (pins 1/2, 15/16, 29/30) and there has to be a 1K resistor between 11 and 21. I connected my pin 11 to pin 15 because it was easiest. Just FYI.

edit2: Okay, the 1K resistor between 21 and GND doesn't seem to affect anything. Oh well. 11 to GND is the required modification to get iPhone's line out signal.
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Last edited by joneeboi; 06-14-2008 at 07:06 PM.
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Old 06-14-2008, 08:04 PM   #1172 (permalink)
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Originally Posted by joneeboi View Post
That's part of what I'm saying. The other part of the message was that you should remove the wire. It's unnecessary.
OK, so basically I turned off the ipod, connected the battery and checked the voltage on the ground ptn with the wire attached, it read: 3.99V (It says it's rated 3.7V on the battery).

So i disconnected the wire and checked the voltage again (with the ipod stilff off), still 3.99V.


Here's a pic of the wire:



I did the same for this newer 4th gen I bought, and the same thing occured.


Not sure which other ptns to check for?


thanks
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Old 06-14-2008, 10:24 PM   #1173 (permalink)
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I re-repeat: you don't need that wire. Try disconnecting it and then tell us your results.
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Old 06-14-2008, 11:30 PM   #1174 (permalink)
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Originally Posted by joneeboi View Post
I am pleased to announce that I just joined the iPhone club. It's been really annoying having to carry an iPod touch and my Palm Treo 680 around in the same pocket, but now no more! I am currently transferring music and some awesome ringtones to my new baby, so huzzah for me. And as you probably all have guessed, I will be figuring a my way into the iPhone for a possible diyModPhone (any better nomenclature suggestions?). Don't hold your breath, as you all may have noticed that my work travels at a snail's pace.

As such, anyone interested in an iPod touch?

edit: Also, to get things rolling, I just connected my iPhone to my PIMETA, which didn't actually work at first. Then I remembered this thread which concluded that pin 11 (serial GND) had to be connected to any of the GNDs in the dock (pins 1/2, 15/16, 29/30) and there has to be a 1K resistor between 11 and 21. I connected my pin 11 to pin 15 because it was easiest. Just FYI.

edit2: Okay, the 1K resistor between 21 and GND doesn't seem to affect anything. Oh well. 11 to GND is the required modification to get iPhone's line out signal.
Grats man!

Did you get a nice deal since the new one is announced?
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Old 06-15-2008, 12:05 AM   #1175 (permalink)
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Originally Posted by joneeboi View Post
I re-repeat: you don't need that wire. Try disconnecting it and then tell us your results.
hi,

i did cut the wire, so basically it was connected to nothing and still same results.
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Old 06-15-2008, 06:00 AM   #1176 (permalink)
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I have to wonder now what kind of firmware you are using. Rockbox is notorious for bad battery life, perhaps that's what's causing the bad battery life. I don't think that my Rockbox ever had such low battery life and I know that there was some concerted efforts in increasing battery life for some iPod Rockbox versions, so maybe it isn't what is causing your problem.

Thinking a while back, I replaced my stock 4G's battery with a 1200mAh battery from eBay and I only got about 8 hours battery life with it too, though I was actually listening to it for those 8 hours. Mind you, I was listening to classical music as WAV files with Rockbox, so the hard drive was spinning like mad the whole time. I don't think this problem completely resembles yours, but I'll offer it anyways.

Or perhaps there is a less technical answer and one of the simple mistakes that are easily made. I recently had a diyMod 3G "die" on me because the hard drive connector wasn't functioning properly. I replaced it and got it to work despite the headache I went through researching the problem online. Check your connections, as there may be a clue hiding in a faulty connector. Better yet, run the tests in the iPod's diagnostic mode. Search here: iPod Diagnostic Mode. That's how I found out that the 3G's hard drive wasn't communicating as it was supposed to.

Those are my current ideas. Give them a go and let me know how they hold up.
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Whatever happened to drivers waving when you stop or slow down to let them into your lane?
- Specs don't necessarily make good music.
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Old 06-15-2008, 11:01 AM   #1177 (permalink)
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Originally Posted by barqy View Post
^ you try changing the battery?

I'm not sure why it would do this, the other reason i can think of (for my 4th gen) is maybe when I made a ground wire (from head phone jack), it's someone discharging the battery :\


but uh, i really dont know otherwise.
No I didn't change

Before modding it, the battery went smooth.
After modded, it still worked fine until the battery drained. And I recharged it, without success. Still can't guess what happened
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Old 06-16-2008, 03:32 AM   #1178 (permalink)
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You know, that's quite odd as my diyMod 4G has stopped charging as well. This problem is a new one for me. I won't get it back until I fix an iPod for a friend, so wait for me to get it back to look at it.
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Whatever happened to drivers waving when you stop or slow down to let them into your lane?
- Specs don't necessarily make good music.
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Old 06-16-2008, 06:40 AM   #1179 (permalink)
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i never rockboxed my ipod, so i dont think it's that issue.

very strange this is a re-occuring problem.


could it be because people are trying to burn in the BG caps by having a power soruce plugged it constantly to the ipod


will await your results joneeboi.
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Old 06-20-2008, 10:26 AM   #1180 (permalink)
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Hi all. I've been planning to do this for a long time, and seeing as it seems like a very worthy player which can be gotten for a total of (hopefully) less than $100, I think I'll go ahead with it. I've read the first few pages (there is a similar diagram to the one I'm going to post on page 3 I think, but I have additional questions which I think aren't answered.

Is this all that is needed? The lines represent wires and the red marked cylinders mark the caps. The negative ends of the caps will then go to the respective terminals on the 3.5mm jack which is to be plugged into an amp. Where would I ground this 3.5mm jack? Do I need to run a third wire from somewhere (built in headphone jack?) else?

There is no difference between using the big yellow ones and the smaller black ones other than one being controlled by clickwheel volume? Looks like the yellow ones are easier to solder to. The things (part with the Z or the yellow ones) don't need to be un-soldered either I assume?



From reading some other posts, I could alternatively push the new signal into the headphone jack or line out, and then connect a custom mini-mini or LOD with caps inside to the amp? This has no advantage though right? I'm assuming by making a third set of wires out of the side of the iPod nano case leaves the line out port and headphone jack in perfect usable operation (i.e. unaltered).

Cheers. If you are selling any iPod nano, please contact me as well

Also, if I'm totally off the track with the method (I think it sounds too simple considering Vinnie charges a crapload for his service, even minus the lifetime support he gives you) please tell me.

EDIT: I'm hoping to achieve something similar to this (in that there is an extra set of wires from the side):
http://i98.photobucket.com/albums/l2...withps15pj.jpg
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