[Q] OTG Cable switch end? - Android Q&A, Help & Troubleshooting

Hi guys. I just bought an OTG cable with micro usb male. I tried looking for one with a galaxy tab male connector so that I could use it on my tab 2, but unfortunately I couldn't find one. So I decided to buy the otg cable AND a data cable of the tab. So I'm wondering what would happen if i cut them both open then connect them to each other. Would it work? They both ARE for data transfer anyways. I know this is my first post, and I'm kind of a noob, but please help me on this. thanks

OTG cables have the ID pin grounded at the connector that plugs in the device.
If the 30 pin data cable you have has a 4 pin full-size USB male on the other end, the ID connection is not carried through.
You could massacre the 30 pin, gain access to the ID pin and ground it there.
If the 30 pin data cable that you have has a 5 pin micro USB female on the other end then the ID connection might be carried through, but I kind of doubt it.

Related

[Q] Dual micro USB?

Hi together,
ive asked me if it is possible to use an adapter for 1x micro usb (plug) -> 2x micro usb (jack).
Could the phone handle 2 USB devices at the same time?
Maybe then it is possible to use the HDMI output and the USB host parallel?
For example to use an TV as screen and an HDD as the source for a movie.
This would be nice.
Thanks in advance.
macc
When the connector is used for HDMI I doubt it can be used as USB at the same time, I'n sorry.
Maybe in a few months cyanogenmod provides a hack, if there will be an dual adapter soon.
We will see. Thank you.
macc
The hardware needs to allow this if it'd become possible. You need a really smart USB dongle that knows how to split the HDMI output from the USB output.
Sounds a little too difficult to ever happen.
Hmm thats right. I think i still dream xD
But thank you.
Sent from my GT-I9100 using Tapatalk
it is not possible. because as stated on this forum many times before, the type of usb connection is determined by the resistor between pin 4 and 5 of the micro usb connector. the strength can tell the phone, that there is either a charger, a pc connection, car kit, jig, usb otg or mhl connection present.
and i believe, this is an important thing to keep in mind for so many things:
for instance, why the original car kit triggers car mode and generic car charging cables don't or why not just any micro usb male to usb a female will work as a otg cable or why flashing should be done with the original usb cable...
so if you were to buy or build a micro usb hub, since it has no resistor in the very plug that connects to the phone, it cannot be used for anything but charging and quite frankly, i wouldn't connect more than one charger to the phone.
however, if you want to use your phone for presentations or watching movies and still be able to use it, get a bluetooth keyboard and mouse or a bluetooth presenter or do it the other way around and use a usb input device and transfer your media using allshare. everything else is physically impossible, so neither CM nor XDA can do anything about it. the only device that can do what you want is the new motorola. it has a separate micro usb and micro hdmi port and a docking station, so you can use it as a full notebook.
Thats obvious. Thank you.
macc

USB Host ?

Can EEE PAD Transformer support Full USB HOST functionality using stock connector provided by ASUS using something like below FEMALE TO FEMALE USB Adaptor ?
http://www.hkcolordigital.com/usb-2.0-a-female-to-usb-2.0-a-female-adapter.html
I know ASUS dock keyboard do have USB port and also, ASUS is selling USB adaptor for around $45, but I do not want to spend that much.
Since ASUS stock connector which is used for charging as well as data transfer from PC support USB functionality, I believe it should be easy to implement.
Any suggestion/solution ?
Thanks
No, it wouldn't work.
http://www.androidtablets.net/forum/asus-tablets/17308-usb-useful-transformer.html
I can't find pinout for ASUS charging connector, but i think it has USB-host pins in it - so you should just solder an USB-female to them in right order.
UPD:
http://www.alwaysinnovating.com/wiki/index.php/40-pin_connector
http://forum.xda-developers.com/archive/index.php/t-1056615.html
this might work. USB OTG is what we looking for
USB Adapter Coupler Type A Female to Female
I have ordered "USB Adapter Coupler Type A Female to Female" from ebay ($3 including shipping):
http://www.ebay.in/itm/120868617077?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_932wt_1143
Once it reaches to me, I'll try what is possible with it.
I received the "USB Adapter Coupler Type A Female to Female" today and tried to connect USB pen drive and as it was expected, NOTHING HAPPENED.
But, I still think it is possible. I have seen Nexus and Galaxy phones with USB host online.
I think, to be precise, it is not only Female to Female adaptor to be connected to stock connector, but it needs some power (+5v) as well. For this, I think it need USB Y Connector, as in attachment. Below is the link for reference:
http://htc-linux.org/wiki/index.php?title=Msm_Usb_Host
Now, I am thinking to open Female to Female USB connector and solder 2-wire with USB Male connector to it (I have extra USB mouse) for power (+5V & Ground) and try again.
look at last link in my previous reply. There are photos of disassembled host adapter and some schematics-pinouts. TF has USBhost, but it on different pins than usb-slave cable.

Extension cable for MHL Adapter?

I have a MHL Adapter and I get video just fine. Now I want to be able to sit on my couch while i use the adapter. Seems to me the simplest way would be to use a 15-20 foot Micro USB Male - Micro USB Female extension cable.
Does anyone have any experience with such a setup? Do you have a recommendation for such a cable?
TIA!!
Why micro USB? You can get a HDMI cable as long as you might want (Monoprice is particularly good). If it's not enough you can carry a HDMI signal over a single or (simpler to find) two CAT5 cables w/ RJ45 jacks for hundreds of feet.
I guess the thought was that if I have the Micro USB Extension, then it's one thin lightweight wire that has to travel across the floor.
If I did HDMI, I'd still have to be near power whereas with Micro USB, I could set the power adapter, and HDMI, and MHL Adapter all together and then have a thin and lightweight wire traveling across the floor.
But if it's not possible, (micro USB limitiation??) then HDMI it would have to be.
bean1975 said:
Why micro USB? You can get a HDMI cable as long as you might want (Monoprice is particularly good). If it's not enough you can carry a HDMI signal over a single or (simpler to find) two CAT5 cables w/ RJ45 jacks for hundreds of feet.
Click to expand...
Click to collapse
If the micro USB works it would be much cheaper than a comparable length hdmi cord.
Sent from my SAMSUNG-SGH-I717 using Tapatalk
I would test http://www.amazon.com/Extender-over-CAT5E-CAT6-connection/dp/B003L14ZTC this. It's hard to get cheaper than cat5e.
Just bought 10 feet on amazon! Lovely!
Sent from my SAMSUNG-SGH-I717 using Tapatalk
I wanted to do exactly this - extend the cable but at the micro-USB end to avoid having the Micro-usb power supply line and the bulky MHL adaptor all where the phone is - much cleaner to just have a thin cable coming out of the phone and headed towards the TV.
I did get hold of a micro-USB extension cable (2m/6ft) but unfortunately it does not work. Directly plugging the phone into the MHL adaptor works perfectly, as soon as I insert the micro-USB extension it doesn't work. I need to have a closer look to check the pins are populated etc, but not sure why this would be an issue - don't think it can be signal strength and if all the pins are populated I don't see why the adaptor would care.????
Any thoughts?
Micro B USB extension not working
I, too have been trying to figure out why an extension cable doesn't work the way you think it might. Today, I tried cutting my 6 foot cable, first making sure I had the right power leads working. Then I went through all the possible combinations of connections to see if one would work. None do. I'm at a complete loss on this wondering what I should try next.
Thanks for info....similarly baffled but at least you have ruled out something!
Like the other guy said, get your x for of hdmi cable, then just plug your AC charger in where you are. Mhl might use additional connectors/pins/whatever vs micro USB. Or you can go totally wireless and use a Bluetooth mouse and keyboard.
Also I remember I had a charging issue with an extension. Sometimes one product works better than others. I can't charge my phone with my 20 dollar AC charger from best buy since the ICS leak. It's weird. Hdmi cables are pretty uniform, I would just extend that.
Sent from my SAMSUNG-SGH-I717 using XDA
Yes, that works, always has, but that's not the point. Would rather have just one long cable connected to the phone in front of the TV rather than three cables, the device and the phone in a kludge setup.
A partial answer
This allows connecting 6 feet away with a thin, flexible single cable..Also cheap, but shipping takes 15 days.
goo.gl/NzCik
Gavdroid said:
I did get hold of a micro-USB extension cable (2m/6ft) but unfortunately it does not work. Directly plugging the phone into the MHL adaptor works perfectly, as soon as I insert the micro-USB extension it doesn't work. I need to have a closer look to check the pins are populated etc, but not sure why this would be an issue - don't think it can be signal strength and if all the pins are populated I don't see why the adaptor would care.????
Any thoughts?
Click to expand...
Click to collapse
I took apart the two cables and the USB has four wires while the MHL cable has ten.
are the mhl wires easily extendable themselves by splicing? I'm thinking strip out a few usb cables and use the wires? Or just go purchase some extremely thin gauge wire (22 gauge) and make it yourself?
Micro B USB extension not working
The Micro B USB connector only has 5 connections, so there is no way you can connect 10 from the MHL cable to it, so something else is going on.
pinoutsguide.com/PortableDevices/micro_usb_pinout.shtml
amblix said:
are the mhl wires easily extendable themselves by splicing? I'm thinking strip out a few usb cables and use the wires? Or just go purchase some extremely thin gauge wire (22 gauge) and make it yourself?
Click to expand...
Click to collapse
I bought splices and thought about extending the cable. It's possible.
galaxy s3
I did wanted to do the same but the extension cable didn't work. I looked at the connecting points and felt that the micro usb from Mel adaptor is to bit longer than usual so I thought that may be the reason and I shorten it resulting damaging my Mel adaptor itself. Now I am going for allshare cast wireless hub. So everyone please don't try to cut the micro usb pin from your adaptor or u will better decide to for my option to for complete flexibility.
I want to do this EXACT same thing but slightly more extreme:
I want an MHL adapter with 10-25 feet of micro USB cable on the end so I can use it from anywhere in my living room.
Is there any such cable/adapter?
Why do all MHL adapters come with only a 5 inch cable??? It is maddening!
*bump* I am looking for this too.. but I have a reason slightly different.. I have an AppRadio in my car that I connect my phone to. The MHL cable end is rather bulky and does not fit into the opening of my otterbox that is on my phone... most microUSB wires fit into the opening just fine.. Taking my phone out of the case every time I am in the car is rather ridiculous so I bought the micro USB extension (bought a 6" one).. didn;t even register except to charge... So, and ideas would be greatly appreciated..
Teej53214 said:
*bump* I am looking for this too.. but I have a reason slightly different.. I have an AppRadio in my car that I connect my phone to. The MHL cable end is rather bulky and does not fit into the opening of my otterbox that is on my phone... most microUSB wires fit into the opening just fine.. Taking my phone out of the case every time I am in the car is rather ridiculous so I bought the micro USB extension (bought a 6" one).. didn;t even register except to charge... So, and ideas would be greatly appreciated..
Click to expand...
Click to collapse
Get a different MHL adapter. I use an adapter close to the one 7 posts up by hedaleth with my kenwood system in my truck.

Can I use female to female usb adapter to connect a device with the data cable?

Hey, here is the deal. I was wondering, what if I buy one of these:
USB Female to Female Adapters Couplers (Pair)
and connect it to the original data cable on one side and on the other a device like a usb flash drive, etc.
Will it work? Instead of having an adapter like this:
30-Pin to USB Female Data & Charging Cable for Samsung Galaxy Tab 10.1 (10CM-Length)
would having a female to female usb adapter take care of the business? I have an adapter like the above, I was just thinking if I buy this, maybe I could also use it on my brother's iPhone 4S to plug in a flash drive or something similar... Any feedback is greatly appreciated. Thanks.

Dock connector is longer: why

Hi,
Does anyone has any idea why the micro-USB connectors which are used to connect a HDMI or VGA cable to the micro-USB port of the Samsung Galaxies are longer than let's say a data micro USB connector?
I've tried a micro-USB extension cable, and they don't work with these video-output connectors because they're too long. When I looked inside the connector I noticed that all the connection points are way down the connector, and that the upper part is just extra. So I've tried filing off the upper part. Now it charges the phone, but still no video output.
Thanks!
Never mind, just found an answer to my question
Apparently the dock / video out connectors are 11 pin micro USB connectors. The data and charging cable connectors are 5 pin.
Now to find an extension cable for that. I wonder if this excists.
It would be much easier to find HDMI/VGA extension cable rather then the 11 ping micro usb.
golalmo said:
It would be much easier to find HDMI/VGA extension cable rather then the 11 ping micro usb.
Click to expand...
Click to collapse
Indeed, but the problem is that I want to extend the dock connector so I can put my Note 3 next to my dock to put it in landscape.

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