Database Users

[Q] Pinout micro USB Confused.

Hi,
I'm totaly confused about what I found on the main board of my HD2.
Now, Simple you think, if you look on google you find the pinout to be:
5 VCC +5 V
4 D− Data −
3 D+ Data +
2 Type A: connected to Ground
or
Type B: not connected
1 GND Black Signal Ground
Easy... Or????
My USB is broken from the PCB (looks like the coper on the pcb is not that thight to the bord. Well.. Since I did study electronocs, I should be able to fix it. I took my HD2 appart, but I found this:
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Now if you look at the connections, Pin 1 is clear, Pin 2 is connected Pin 5 is also clear. Pin 4 can be through an other layer, so that is also explanable.
BUT: Pin 3 ? Is that one not connected? Does it just use ground instead of data-?
Who can give some answers? I don't understand.
Thanks

Hi again,
Ok, I know it should be connected somewhere, but I can not find out where I can connect it. I hope someone knows where I can find a coper line or component which should be connected to pin 3.
I now heve all connected except pin3 which makes USB useless, but the charging works.
There is one more question, does anyone know where I could get a new mainboard for this phone and what the price is?

Hi,did U solve this?i have problem with microusb too...

pinouts
hope the pic help the to your problem.
be careful when soldering because the small pives will come apart if you atemot to solder with soldering iron.
best will be bga blow gun and positioning small wire near the components still be very careful otherwise you will not have what to fix.

For all, I did not solve it.. The HD2 worked fine, but flashing through USB was inposible. After a few months I droped it :-( screen was broken (Both, digitizer and LCD) and the usb broke again. so I droped it in the trash since it was not worth it anymore.... RIP HD2.... I will miss you....

kruithofm said:
For all, I did not solve it.. The HD2 worked fine, but flashing through USB was inposible. After a few months I droped it :-( screen was broken (Both, digitizer and LCD) and the usb broke again. so I droped it in the trash since it was not worth it anymore.... RIP HD2.... I will miss you....
Click to expand...
Click to collapse
Are you joking? Really dumped it?
Very big mistake!
You wasted a totally revivable/repairable hd2

Nope... still have it, but... digitizer + LCD + USB broke... And if I'm not wrong also the volume keys are teared.... So fixing it means buy LCD/digitizer/ribben kabel/mainboard... which is basicly a whole new HD2, without the casing and battery.

kruithofm said:
Nope... still have it, but... digitizer + LCD + USB broke... And if I'm not wrong also the volume keys are teared.... So fixing it means buy LCD/digitizer/ribben kabel/mainboard... which is basicly a whole new HD2, without the casing and battery.
Click to expand...
Click to collapse
I'm interested in buying it!
Think about for a fair price and PM me, if interested!

I'm not selling.. sorry...

Nexus 7 external OTG with thin flex, can be left on with a case

Ok So I'v had my 16Gb N7 for a week now and the lack of micro SD port is annoying.... Soooo heres my version of an OTG adapter, It sticks out about 8mm from the Nexus but I'm sure I can half that.
Next up is the internal version, I could do an internal one right now but want full functionality of the USB port as well so I'll add something when I get round to it.
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It can sit on the hinge part of the case and the case closes fine.

very nice, was that hard to make? Although you wouldn't get points for looks I think a lot of people would be intrested buying them if you sold them through ebay, me included.

Its just something I knocked up, I'll work on it tonight to get the jack almost flush with the N7 as well as a shorter flex so it gets hidden in the case somewhere. Then all that should be visible is the actual sd slot. I'm ordering some smaller usb->microSD adaptors so that should make it even smaller.

funkysam78 said:
Its just something I knocked up, I'll work on it tonight to get the jack almost flush with the N7 as well as a shorter flex so it gets hidden in the case somewhere. Then all that should be visible is the actual sd slot. I'm ordering some smaller usb->microSD adaptors so that should make it even smaller.
Click to expand...
Click to collapse
Now THAT'S pretty cool! Definately keeping an eye on this!
I think there are still shorter Micro USB plugs avaliable, i'll see if i can find one of them.

Very cool

I'v put this on the back shelf untill I can get an internal mod finished

I be happy with that cable. I am sure that come in handy.:thumbup:
Sent from my Nexus 7 using xda app-developers app

funkysam, where did you get that microUSB connector (is a 90 degree right?) and what is the connection from the microUSB to the memory reader's end??
I would like to make 1 using this memory reader.
thanks...

pGuerrerox said:
funkysam, where did you get that microUSB connector (is a 90 degree right?) and what is the connection from the microUSB to the memory reader's end??
I would like to make 1 using this memory reader.
thanks...
Click to expand...
Click to collapse
Hi, No its just a straight one with a little bit taken off the end with a dremel. I've got the Kingston card reader as well as quite a few others. I'v almost done the internal mod so I'll make a vid soon, it will allow PC access as well but not at the same time as the internal card but charging at 1A + internal card reader at same time are goo to go.

where do u get the thin flex cable? i google ebay and no result... for the micro sd socket with the pcb board.. did you bought it together or u solder it?

Nexus 4 USB not recognized

Hello, long story short...
Stuck on google screen, no ROM, just TWRP. ADB Fastboot don't work, phone will charge, but windows 8.1 won't recognize it, it just says USB Descriptor Failed and Not Recognized. Drivers for it don't work either.
Bad Motherboard?
EDIT:
I already tried swapping the USB PCB from another fully working Nexus 4 and it did not work anyway, while the one from this damaged one did work correctly on the other already working N4

Take it you've tried another cable and usb port on comp? Also a good chance that this is charging block on the phone rather than motherboard. Worth a try.

This may help http://forum.xda-developers.com/showthread.php?p=42022027
Sent from my Nexus 5 using XDA Free mobile app

jd1639 said:
This may help http://forum.xda-developers.com/showthread.php?p=42022027
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
I already tried that, but without the correct Device ID the drivers don't do nothing. Tried forcing them on the Unrecognized USB Device, but it failed to communicate with the phone entirely. I tried swapping another USB PCB from my wife's N4 and same problem... I think I killed this thing... man... Should I try a Laptop with Ubuntu?
EDIT:
I read in another post that it might be the internal USB connector pins (the little orange cable that plugs into the mainboard), I will check this and see if I can straighten them out. Will post back results for everyone wanting to know if this was the problem

I think I found the problem, one of the transistors is kind of blown...
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Does anyone know where I can get a replacement resistor/transistor? Doesn't look that difficult to solder.

Looks like something is bad internally, logic board replacement is inevitable. The component is called a Transient Voltage Suppressor (TVS), it's meant to protect other components, but even after shorting it still throws a not recognized message. Sorry for everyone reading this thread, you will need a replacement motherboard (logic board).

Getting the same problem, happened because of a short circuit on the car charger. Really not possible to change only the transistor? Can live without the working usb, but the horrible battery life is killing me.
Sent from my Nexus 4 using Tapatalk

Nexus 7 USB Port (Broken Solder Pad)

Hi,
My Nexus 7 Gen 2 usb stopped charging (it was on/off for a while but now fully stopped).
I ordered a new USB component from eBay so I was desoldering the old one this morning but unfortunatley the 5 pins at the back ripped a few of the pads from the board off.
I was wondering before I order a new USB PCB for £40 is it possible to re trace the 5 pins and wire them to somewhere different on the board??
Looking at this picture this is what I thought I could do:
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Is this possible and if so the best way to fix this?
Thanks

Rowan88 said:
Hi,
My Nexus 7 Gen 2 usb stopped charging (it was on/off for a while but now fully stopped).
I ordered a new USB component from eBay so I was desoldering the old one this morning but unfortunatley the 5 pins at the back ripped a few of the pads from the board off.
I was wondering before I order a new USB PCB for £40 is it possible to re trace the 5 pins and wire them to somewhere different on the board??
Looking at this picture this is what I thought I could do:
Is this possible and if so the best way to fix this?
Thanks
Click to expand...
Click to collapse
You could try soldering to those solder pads right before the resistors/caps in the path. If you bypass those, and solder directly to the exposed pads you identified, you may have issues, i.e. those resistors/caps are probably there for a reason . That's what I would try anyways.

did you ever end up soldering to these pads? cause any issues?

neonshaun said:
did you ever end up soldering to these pads? cause any issues?
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Click to collapse
nevermind, didnt work of course. Ended up soldering to the pads just before those caps, just needed to not be lazy about it.

iPod Classic [USB C addon] [WIP]

.
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This is in the concept stage. There are no guarantees.
I am converting my Ipod classic to use a series of SD cards, and I picked up a spare iPod for cheap. This is going to be my work log for removing the stock 30 pin connector and replacing it with a USB C connector. I'll need to design and 3d print the bottom cover of the device except where the connector is. I'm not even sure if there's enough room on the board for this to happen, I might end up needing to cut into the iPod board and do tracing stuff to make room.

One thing I'm wondering is if I can attach the firewire of the iPod to the firewire of the USB c port. I think I'll try to make a 30pin connector to USB C to test and see if there's any advantage before I attach anything to the board itself.
http://pinouts.ru/PortableDevices/ipod_pinout.shtml
https://i.stack.imgur.com/Aovh5.png
https://www.mill-max.com/assets/pdfs/149.2.pdf
update 12/20/2018
I have a 3d printer now, and the dev boards have arrived.

Reserved2

Please update your work log!
I thought I was the only one wishing to upgrade my port along with my other mods to my ipod. I'm curious as to how you did it and what steps you took to make it happen! Following for future updates.

tkillen96 said:
I thought I was the only one wishing to upgrade my port along with my other mods to my ipod. I'm curious as to how you did it and what steps you took to make it happen! Following for future updates.
Click to expand...
Click to collapse
Unfortunately I'm stuck. I've tried translating the pins from one to another, but nothing I've tried works. It does not recognize it.
If someone knows what pins to what to make the conversion, all I care about is making sure it can still charge and sync. Not the other 30 pin features.

Any updates to this?

DR650SE said:
Any updates to this?
Click to expand...
Click to collapse
Am wondering the same, has anyone else attempted this? Wonder if there's a QI adapter anywhere. Would love to get rid of the crappy charging cable it requires.

Great project any news

lets reignite this project !
Save the BS and simplify it, just 4 pins, "D+", "D-", "5V+" and "GND", these are all we need to charge and transfer data.
What was the road block here? just unable to obtain USB connection ? Type C is a little tricky as it has a parallel design like lightning. Maybe you had got the pinout jumbled or connected one side in reverse? Ordering some test boards and Type C port components to see what i can achieve!
https://www.theiphonewiki.com/wiki/30-pin_Connector
Someone else commented about QI charging, it is entirely possible and would not be very difficult to do, the only problem is the iPod has a solid metal back so it would need a custom manufactured back replacement. I absolutely love the idea but i dont think anyone has the money/time/resources to design, manufacture the parts required. Because even if they did they would be sitting on it for a very long time with very limited sales(not to mention how many different variations.)