Develop Bugs

DIY USB OTG CONVERTER FOR i9100! IT WORKS!

The most Micro USB to USB converters are not work if you want to use it for OTG converter, because the 4. pin of the micro usb plug is not connected!
The most ebay and computer shop's converters like this!
If you want to use it for working OTG adapter you have to connect the micro usb connector 4. pin to GND (5. pin).
Like this:
I made this mod on my adapter and it works!
First you have to open up the outter cover and carve the plastic around the micro usb pins. You can use multimeter to check the pinout.
After that solder the 4. pin to 5. pin with a piece of wire.
And finally glue back the outter cover.
Video:
So if you have not working adapter you can mod it, if you have suffice experience with electronic and proper tools.
Only do with your own risk!

I have this Usb converter!
With your mod works perfectly!!

just tried it it works perf, thank you!

Weird I got one off eBay from Hong Kong and it works without Modding. Can open files off a USB stick. Got it for £1
Sent from my GT-I9100 using XDA Premium App

Anyone knows how the Galaxy determines to be in home or car dock?
ALexander

hi thanks for great find just built one from a female usb cable vey nice.

WOrked for me too...thanks

skibadee said:
Weird I got one off eBay from Hong Kong and it works without Modding. Can open files off a USB stick. Got it for £1
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
Share the link please

I buy a pair in Dealextreme.com
SKU 50774 o search OTG

It may have a resistor between pin 4 and 5, kind of like a jig,
I remember there was a fun with resistors thread for the sgs1.
I may attack tge free dock I,got from optus.
Sent from my GT-I9100 using XDA App

Vairn said:
It may have a resistor between pin 4 and 5, kind of like a jig,
Click to expand...
Click to collapse
OTG has no resistor, its direct connect to GND.

i bought this one from ebay
(cant post links )
item number 260782021641
and it works with usb drives and i used a mouse in it too

OTG Cable USB (B) to Micro USB (A) Powered with AAA batteries ?
As one knows, Samsung has promised a MHL Cable
You noticed it is not only a cable but a box out of which you may plug in an extra power supply.
The obvious reason is if the passive monitor does not furnish 5V, the phone will rapidly be out of power.
Now you know that to obtain video rather than anything less, Pin 4 (sense) and 5 (Ground) of micro USB (male A) must be connected with a 365K resistance.
I suppose the dock Samsung is selling for I9100 (yes, I have it) is grounded at 1000K as it provides audio with remote, and yes, the dock provides power supply via extra micro USB as well.
I come to my point: If I want to access any USB data On the Go, I need a cable OTG with 2 ports: USB 2.0/3.0 (female, B sided) to a micro USB (male, A sided, grounded but with no resistance = 0K). Many of them exist on the market out there.
But it is quite impossible to use because of lack of power supply in the passive device (let’s say a handy 1T HDD usually powered via Host connexion !
Would it be possible to insert some sort of receptacle for AAA battery in the middle of such a cable to provide for power while you are for a long time out of access to an electric plug ? Does such a cable exist somewhere to buy ? What would be the sheme to mount this ? HELP !

Is it possible to add USB charging cable to USB-host cable? I want to use mouse\keyboard\flash and charge device in the same time.
I also interested how to add power to USB-host cable for devices "High-power device connected".

OTG and Power
thats excactly my question:
is it possible to use otg cable with a trackball or mouse and at same time charge the S2?
give power to usb mouse and charge S2 over a charger!?

Is it possible to use a game controller over usb otg? Would be pretty nice.
Wanna have a S2Play ;-)

anonymous572 said:
Is it possible to add USB charging cable to USB-host cable? I want to use mouse\keyboard\flash and charge device in the same time.
I also interested how to add power to USB-host cable for devices "High-power device connected".
Click to expand...
Click to collapse
it is not possible. usb host can be used one way not two ways.
Sent from my GT-I9100

i do have same problem..is there any suggestions to make sgs2 can read the high-power USB flashdisk via otg??

An USB hub with external power maybe ? I didn't tried this kind of setup, but it should work. I have a hub, but I don't have a OTG cable yet.

blueseeker said:
An USB hub with external power maybe ? I didn't tried this kind of setup, but it should work. I have a hub, but I don't have a OTG cable yet.
Click to expand...
Click to collapse
I've been try this, but still doesn't work for me..I'm also used electrical multi-tester, and the usb flash already has 5V voltage but in my sgs2 still nothing happen (my usb flashdisk doesn't mounted to sgs2)..
Is there any driver/apps do I need to install first before using OTG?? or, is there two kind of sgs2, the one which support OTG and the other one not??
please someone help me...One point I choose this SGS2 is the OTG feature..
PS: sorry for my english

Micro USB Cable

Hey guys, first time poster!
My Galaxy Nexus is on the way and I'm looking to get a second micro usb cable, one that I can take to work and charge from the USB port on my work computer.
Will any old cable work for the Galaxy nexus? Is there any half decent ones going around?

Any micro usb cable will work just fine.

Welcome to XDA MrPenguins, and:
El Daddy said:
Any micro usb cable will work just fine.
Click to expand...
Click to collapse

This is a pretty good one as it is quite flexible and not too short:
5 Feet USB A to Micro USB M/M Data Cable for Cell Phones, Charge Cell Phone on PC and Transfer Data
And if you use MrRebates.com, you get 3% cash-back and $5 or so just for signing up.
I find the USB cable that comes with the device too stiff and too short.

micro female/male hdmi and usb for Lapdock

I bought these on ebay. The HDMI is short but worked but when I connect both cables to lapdock, the USB is not being recognized so the keyboard/mouse is not working. I want this just to act as an extension so I can use full lapdock abilities with cables. Any idea what's going on (cable charges on plug but does not charge on lapdock)? Maybe someone has better usb cables.
fixed the link:
http://www.ebay.com/itm/29059482363...X:IT&_trksid=p3984.m1497.l2649#ht_3046wt_1508
http://www.ebay.com/itm/36042990934...X:IT&_trksid=p3984.m1497.l2649#ht_2333wt_1010

links appear to be broken...
From your title I've been looking for these (or similar) cables for a long time and have been unsuccessful. However I have yet to try them.

Fixed the link
http://www.ebay.com/itm/29059482363...X:IT&_trksid=p3984.m1497.l2649#ht_3046wt_1508
http://www.ebay.com/itm/36042990934...X:IT&_trksid=p3984.m1497.l2649#ht_2333wt_1010

i don't think it will work either way, tried a few things like this with no avail.

why wouldn't they? Cheap build quality that doesn't include the data wires? Hell I'll be willing to splice two cables together to get our desired effect, the only problem is that cords with a female micro usb are incredibly hard to come by

So that is what you think it is? No data on the usb cables.
Sent from my MB860 using XDA App

mamoranto said:
So that is what you think it is? No data on the usb cables.
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
the only reason that is my suspicion is because there are many "charging" products out there that don't really need data. Why there would be a need for such a small charging extension cable is beyond me, but it's the only solution I can think of, but I have no way of confirming or denying it either. The ebay descriptions seem to imply that the data wires are there, but we all know how reliable ebay can be...
Another idea I had was that it might be sensing the resistance in the cable, since, if I remember correctly, that was how some think/though the car dock puts the atrix into car mode without a magnet as is/was commonly used. Again these are just ideas.
Or the cable is just so poorly made that it's defective...I honestly have no clue

Has anyone got full lapdock capabilities using extension cables? I can only get the screen working and not the mouse and keyboard.

The HDMI extender was the hard one to find. There are other micro USB extenders out there, theoretically with all wires connected....
http://www.usbfirewire.com/uextendmicrob.html
Kind of makes me wish i hadn't hacked up my lapdock to work with the Otterbox

Where did you get your HDMI extender? I got mine from All4Cellular but it's quite short. Will have to get another HDMI one if the usb cable you recommended works.

mamoranto said:
Where did you get your HDMI extender? I got mine from All4Cellular but it's quite short. Will have to get another HDMI one if the usb cable you recommended works.
Click to expand...
Click to collapse
If you're asking me, i didn't. I was referring to the ebay link in the third post.

grevedan said:
The HDMI extender was the hard one to find. There are other micro USB extenders out there, theoretically with all wires connected....
http://www.usbfirewire.com/uextendmicrob.html
Kind of makes me wish i hadn't hacked up my webtop to work with the Otterbox
Click to expand...
Click to collapse
before I read that post, I was looking around the forums and the web yesterday well into the night. here are some of the things I've found that might be relevant to everyone (and it might possibly be cheaper, though more diy).
Micro USB stuff:
I have no idea why this exists http://www.dealextreme.com/p/micro-...r-cable-for-blackberry-9900-black-30cm-107901
I have no idea why this only has 4 pins http://www.sparkfun.com/products/9614
http://www.sparkfun.com/products/10031
mamoranto said:
Where did you get your HDMI extender? I got mine from All4Cellular but it's quite short. Will have to get another HDMI one if the usb cable you recommended works.
Click to expand...
Click to collapse
Here's what I am thinking about doing:
http://www.ebay.com/itm/140626354628#ht_2821wt_1177 or http://www.ebay.com/itm/Micro-HDMI-...ultDomain_0&hash=item415eac6dc0#ht_2821wt_980
http://www.amazon.com/HDMI-Female-M...YPB4/ref=sr_1_2?ie=UTF8&qid=1329854686&sr=8-2
then the hdmi cable that came with our phone:
http://www.amazon.com/Motorola-Stan...QTA8/ref=sr_1_8?ie=UTF8&qid=1329854856&sr=8-8

The HDMI certainly looks like it may work but the reason I didn't buy that product from ebay a few weeks ago was because it was $50. Now miraculously, it's only $6. Maybe I'll get that if the USB cable I just bought that was suggested works a few posts back.

misiek93 said:
why wouldn't they? Cheap build quality that doesn't include the data wires? Hell I'll be willing to splice two cables together to get our desired effect, the only problem is that cords with a female micro usb are incredibly hard to come by
Click to expand...
Click to collapse
This micro usb extension cord explicitly states that all 5 wires are connected (compatible with droid bionic for the purpose of docking with a case on the phone):
http://www.ebay.com/itm/Micro-USB-E...395?pt=LH_DefaultDomain_0&hash=item335d13272b
I bought the HDMI extension cable and the USB cable above. I have a lapdock so I'll post if it works.

everything asked/answered in here is already covered in the original thread:
http://forum.xda-developers.com/showthread.php?t=1376679

robrj said:
This micro usb extension cord explicitly states that all 5 wires are connected (compatible with droid bionic for the purpose of docking with a case on the phone):
http://www.ebay.com/itm/Micro-USB-E...395?pt=LH_DefaultDomain_0&hash=item335d13272b
I bought the HDMI extension cable and the USB cable above. I have a lapdock so I'll post if it works.
Click to expand...
Click to collapse
The HDMI cable seems to work. On the lapdock, with just the HDMI cable hooked up, it functions like it was it's an entertainment center.
The USB cord will need to be modified a little bit. I can't get it to seat right on the USB jack of the dock. I'll need to shave it down a bit as it doesn't sit down snugly.

robrj said:
The HDMI cable seems to work. On the lapdock, with just the HDMI cable hooked up, it functions like it was it's an entertainment center.
The USB cord will need to be modified a little bit. I can't get it to seat right on the USB jack of the dock. I'll need to shave it down a bit as it doesn't sit down snugly.
Click to expand...
Click to collapse
I ordered the USB cable and experience this same problem, though I am waiting for my hdmi parts to come in (by April 6th I should have all my parts...). The cable itself works flawlessly as a micro usb extension cable when connecting it to the computer.

again as mentioned in the other thread, you want to be careful with the 5v coming out that micro hdmi port. for connecting back to your phone would be no issue, as the phone charges using this voltage, but hooking the lapdocks micro usb up to a host device probably wont appreciate the 5v coming back up the cable, where normally the usb device would be pulling power from said host, not providing it.
one suggestion is to just clip the red wire inside your micro usb cable/adapter.
btw the adapters i use do fit snugly side by side, without modification.

I've been following this thread for a little while now, and I wanted to share something I found.
I was looking at the Motorola Travel Webtop adapter. And I was curious to see whether it could be tweaked to suite our needs. I naively thought/hoped that I could flip the connectors in the device to make a small adapter to connect the Atrix to newer Lapdocks. Unfortunately as you can see in the pictures below (sorry not enough posts to link to the pictures) the two connectors are connected via a PCB not wires or a ribbon cable. Although I still have high hopes that I can de-solder the HDMI and USB connectors, and use a small length of flat ribbon cable to connect them and then re-positions the connectors in the case, to build a micro adapter to use the Atrix on the newer Lapdocks. Should this fail this will at least prevent others from making the same mistake, and solve the mystery of what's really inside the Webtop Travel adapter.

Do any one know if this Micro HDMI Cable would work for Lapdock.
http://www.ebay.com/itm/1-Feet-HDMI...s_Adapters&hash=item416612cecb#ht_1149wt_1187
Description says for Asus tf201 MEMO ME171.
I believe all Cables are standard. Can this used to Atrix 4g with Lapdock?
I have otterbox case for Atrix and don't want to Remove cover everytime to plug in Lapdock.

USB 'B' to USB 'micro b'

I'm looking for a USB 'B' (the one that looks like a square) to micro to connect my s3 to a DAC. I know that there a micro to female USB, and USB A->B, but I'd rather not have to deal with all that for convince. Is there anywhere I can get the cable I'm looking for?
Or if anyone knows where I can get the 2 connectors I could make it myself, but I haven't found someone who sells decently priced USB connectors.

For the DIY soldering required end of things check out SparkFun https://www.sparkfun.com/products/9614 (the have other parts as well).
I got some from E-bay a while back as well. http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=140737641542&ssPageName=ADME:L:eek:C:US:3160
For all things cable related the answer is usually http://www.monoprice.com/. The definitive supplier of good quality reasonably priced cables.

I cant find any such cable, why not just use the converter cables?
all you need is a male micro to female usb type a and you can use your regular usb male a to usb male b cable
you can get it pretty cheap on amazon
you can try to make your own, if you already have these spare cables you will have to sacrifice them
here are the pin diagrams http://www.allpinouts.org/index.php/USB_-_Universal_Serial_Bus (the 11 pin micro usb model is used for hdmi out)
you might want to read through this thread as well as it asking the same thing you want (just a mini-b instead of b)
http://www.head-fi.org/t/628374/samsung-galaxy-s3-to-dac-usb-micro-b-male-to-mini-b-male

Hooking one end of a USB cable type to another end is uber easy.
Just splice the four wires together.
Tape it up if you don't solder.
Otherwise, the Headfi link posted above is a good start. Those guys are always looking up weird ways to hook up the phone to a DAC. Here's another good thread where I remember someone looking for something similar to what you are. It's buried deep in a zillion page thread though.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1620

Micro USB Male splitter to Female

Hi there guys,
I've been having a mere with this for a while now. I'm looking for a cable splitter from a single Micro USB to dual female, so that I can charge my phone while I have it attached to my telly through a Micro USB to HDMI adapter. I can't seem to find one anywhere, and the only Micro USB extenders I have found are pretty dear. Anybody know if these exist?
Cheers

like this??
http://www.amazon.com/CyberTech-Mic...=1366823372&sr=8-6&keywords=micro+usb+to+hdmi
this one says it will charge as you use it
http://www.amazon.com/Fosmon-Female...3564&sr=1-18&keywords=micro+usb+to+hdmi+cable

Spot on
That did the trick perfectly, hadn't realised you could get them ready made. Cheers!