Develop Bugs

USB OTG Adapter

Has anyone been able to find a USB-OTG adapter for the Galaxy Nexus similar to the USB adapter for the Galaxy Tab (pictured below), i.e. one that's just a compact adapter without a cable between the two sides?
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Check amazon... they have otg cables on there without the cable. Its kinda bulky though.
Sent from my Galaxy Nexus using xda premium

Can't that OTG for the Tab work?

Shamrock13 said:
Can't that OTG for the Tab work?
Click to expand...
Click to collapse
No! The galaxy tab does not use micro USB, it has a proprietary cable system somewhat like apple ipod
Sent from my Galaxy Nexus using xda premium

http://www.amazon.com/NOKIA-CA-157-Adapter-cable-Nokia/dp/B0050LO0QE
i just use the one that came with the nokia n8, works just fine

Alpha Class said:
http://www.amazon.com/NOKIA-CA-157-Adapter-cable-Nokia/dp/B0050LO0QE
i just use the one that came with the nokia n8, works just fine
Click to expand...
Click to collapse
You use that one with the Galaxy Nexus?
Looks like it has a MicroUSB-A plug, which shouldn't fit into the Galaxy Nexus's MicroUSB-B port.

Chirality said:
You use that one with the Galaxy Nexus?
Looks like it has a MicroUSB-A plug, which shouldn't fit into the Galaxy Nexus's MicroUSB-B port.
Click to expand...
Click to collapse
correct, just trim the corners, 2 sec job

I bought a 2$ cable from dealextreme for the Galaxy S2. You can find them at the same price on ebay... they work fine, tested with a USB pen and a SIXAXIS.
Now waiting for franco to update his kernel with the NTFS module to try out my external HDD.

Alpha Class said:
correct, just trim the corners, 2 sec job
Click to expand...
Click to collapse
Trim the corners on the cable? Or the GN?

Chirality said:
Trim the corners on the cable? Or the GN?
Click to expand...
Click to collapse
on the cable itself
mind you i did this simply because i had the cable lying around and it wasn't being used
its only a suggestion for the cheap among us , i suppose if i had to buy a cable, i'd just plop down for the micro b

is there a usb otg cable capable of allowing charge and being the host at the same time? or is it even possible? i'm reading mixed results on this. that it is possible and it's not. i want to scream.

pukemon said:
is there a usb otg cable capable of allowing charge and being the host at the same time? or is it even possible? i'm reading mixed results on this. that it is possible and it's not. i want to scream.
Click to expand...
Click to collapse
What you are looking for is a USB Accessory Charger Adapter, which exists in the USB spec but does not seem to actually exist in physical form.

Chirality said:
What you are looking for is a USB Accessory Charger Adapter, which exists in the USB spec but does not seem to actually exist in physical form.
Click to expand...
Click to collapse
so what you are implying is a usb accessory that is kind of passive but allows charging, and if you boink it with another micro usb accessory, usb otg cable here, that it will allow the necessary usb spec for otg also? hmmm...

pukemon said:
so what you are implying is a usb accessory that is kind of passive but allows charging, and if you boink it with another micro usb accessory, usb otg cable here, that it will allow the necessary usb spec for otg also? hmmm...
Click to expand...
Click to collapse
No, what it is is a special USB OTG adapter that has three connectors, a micro USB plug to plug into the host device, a USB socket to plug in the peripheral device, and a micro USB socket to plug in a charger. It also supplies a special resistance on the ID pin to the host device to let it know that a charger is connected so the host does not supply a voltage on the VBUS. Without this special adapter with the ID pin resistance, the host will supply a voltage to power the peripheral which will not work with the charger on the VBUS. Thus this special adapter is needed. This is defined in the USB OTG and Battery Charging specs, but so far it doesn't seem like anyone is manufacturing such a thing.

Chirality said:
Has anyone been able to find a USB-OTG adapter for the Galaxy Nexus similar to the USB adapter for the Galaxy Tab (pictured below), i.e. one that's just a compact adapter without a cable between the two sides?
Click to expand...
Click to collapse
Here http://www.dealextreme.com/p/micro-usb-on-the-go-host-otg-adapter-pair-50774

Chirality said:
No, what it is is a special USB OTG adapter that has three connectors, a micro USB plug to plug into the host device, a USB socket to plug in the peripheral device, and a micro USB socket to plug in a charger. It also supplies a special resistance on the ID pin to the host device to let it know that a charger is connected so the host does not supply a voltage on the VBUS. Without this special adapter with the ID pin resistance, the host will supply a voltage to power the peripheral which will not work with the charger on the VBUS. Thus this special adapter is needed. This is defined in the USB OTG and Battery Charging specs, but so far it doesn't seem like anyone is manufacturing such a thing.
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Click to collapse
Would anybody be able to help make a cable to allow this functionality? I have Muscular Dystrophy and want to use my HTC Evo 3D with the specialized HID USB mouse emulator that's integrated into my wheelchair. This is how I control my desktop PC.
Because I also use the mouse emulator and voice recognition the battery life of the phone isn't that great. I would like to power the phone with a cigarette lighter adapter plugged into my chair.
Thanks!

IT doesnt work on HTC phones. I tried a gew hours ago, since nkbody knew i was forced to buy myself a usb otg cable. Plugged it in the Sensation, and a logitech G35 on the other side. no result, tried with regular usb stick still no result
Sent from my HTC Sensation Z710e using XDA Premium App

What file system are you guys using?
I can't seem to get the phone to read exFAT.
Also can't find ext4 drivers for Windows
FAT32 is not an option since the movies I want to watch are over 4gb.

derkgates said:
Would anybody be able to help make a cable to allow this functionality? I have Muscular Dystrophy and want to use my HTC Evo 3D with the specialized HID USB mouse emulator that's integrated into my wheelchair. This is how I control my desktop PC.
Because I also use the mouse emulator and voice recognition the battery life of the phone isn't that great. I would like to power the phone with a cigarette lighter adapter plugged into my chair.
Thanks!
Click to expand...
Click to collapse
I'll try to do some research and tests and try to make something to help you and other people with similar needs!

I can mount ntfs with "USB Host Controller v0.44" app and 3.0.8-franco.Kernel R140 kernel.

Best of the inexpensive MHL adapters

I see a lot of these on Amazon. Does anyone have a preference or know of a better brand (of the 3rd party type).
I've seen this one mentioned before:
Menotek Micro USB to HDMI MHL Adapter IMPROVED WITH RCP (Remote Control Protocol) for Samsung Galaxy S2, HTC Evo 3D, HTC Evo 4G Tablet, HTC Sensation 4G, Sprint Epic 4G Touch, Galaxy Nexus
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Click
Also, how good is this after-market dock?
Anker Dock Charger with HDMI Output for Samsung Galaxy S II S2 GT-I9100, i9100
Click to expand...
Click to collapse
Click_Me
I have the SGS2 world version (GT-I9100). Does the micro-USB connector on the bottom align up with all the other variants of this phone (Tmo, AT&T, Sprint..ect)? Do all of those have the plug in the same place?
EDIT sorry the pic is so big. I didn't know that before I posted...
EDIT #2 Reading a quick review of the Menotek adapter on Amazon, one of the complaints was its limitation of 720p output. Is that true? Cant the SGS2 output in 1080p?

Personally i'd just buy the cheapest MHL adaptor you can find. It's just a cable so why pay a fortune for it.

It's not just a cable -- there are some electronics inside (that's why they need a charger input).

Have you ordered one yet? I'd be interested in knowing which is the best option and weather there's any reason to avoid the really cheap ones?

gonna grab myself a cheap one of these adaptors and get my emulator groove on, on the big screen.. though god knows how gba games are going to look at 32inches...probably not great.

No.is only cable.

I got official samsung and it is working fine

I have the first one, if your phone is not in airplane mode the screen on your tv often goes completely black. You have to reconnect the mhl cable to display the screen on your tv again. Annoying when watching videos but putting your phone into airplane mode fixes this completely.
Quality is great, downloading a movie and watching it looks incredible, full HD. However if you plan on watching youtube videos on your TV, I suggest you download the app TubeMate, it allows you to stream YT videos in a much higher quality than the standard app.
Sent from my GT-I9100 using XDA App

I have used one of these but not branded.
But I am not so sure about what RCP is for as it is wired and provides no additional gadget for "remote control".
And it's only $13 elsewhere.

conradwu said:
I have used one of these but not branded.
But I am not so sure about what RCP is for as it is wired and provides no additional gadget for "remote control".
And it's only $13 elsewhere.
Click to expand...
Click to collapse
Quoting from Wikipedia here:
"The built-in RCP (Remote Control Protocol) function allows you to use the Remote Control of HDTV to operate the MHL mobile device through HDTV’s CEC function."
http://en.wikipedia.org/wiki/Mobile_High-definition_Link

MHL Adaptor
I bought one a few days ago from Amazon.co.uk, offical Samsung for £14.99 with free delivery, bargain in my opinion.
You have to connect the Samsung charger to power it (although i haven't tested it without the charger to see if it still works). The phone battery seems to drain really fast with the MHL outputting via HDMI, and gets a little warm also, both cores doing their bit no doubt.
Have to say i'm very happy with, and the CEC function (if your tv supports it) is the icing on the cake. With it, you can use your tv's remote (or any ALL in One as in my case [Logitech]) to control the phone navigation, you can play games using the remotes d-pad, and use it to click on items in the menu, or on the internet, rewind, pause and fast forward videos.
I too had the screen blacking out on me as one person mentioned earlier, espcially when playing games, I'll try and see what flight mode does for it, but my conclusions where a less than perfect HDMI cable, as when i tested it on my brothers tv it worked flawlessly without a single blackout (Using a HDMI cable supplied with his SKY+ box).

Might have to buy one of these but i'm still looking for a solution to sending audio NOT over the HDMI since I don't have a HDMI input on my monitors, only DVI. Either over analogue 3.5mm out or bluetooth would be fine!
I think the reason it drains the battery still is because it is using the data pins to send the video. For fast charge these pins would usually be shorted and you can't have both. (That's my understanding anyway!)

I have bought on ebay 1 cable mhl + 1 cable micro usb --> USB femal for only 15€
But the max resolution of mhl is 720p

Cheap MHL cable
I bought my MHL cable from deal extreme for around $13.00. Not only did i get a samsung branded (probably fake) MHL cable, it came with a USB OTG cable and a USB retractable cable too. So far, all 3 seems to work fine and not too expensive

04muim said:
I bought my MHL cable from deal extreme for around $13.00. Not only did i get a samsung branded (probably fake) MHL cable, it came with a USB OTG cable and a USB retractable cable too. So far, all 3 seems to work fine and not too expensive
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Click to collapse
Ha! I just bought the same package today
Can you output video at full 1080p with this one?

I'm quite keen to get one of these but will be upgrading to the Galaxy S3 sometime soon. Does anyone know whether these MHL cables will be compatible with the new S3 as well?
Thanks.

rookst3r said:
I'm quite keen to get one of these but will be upgrading to the Galaxy S3 sometime soon. Does anyone know whether these MHL cables will be compatible with the new S3 as well?
Thanks.
Click to expand...
Click to collapse
Of course... that's why you have a Samsung and not an iPhone.

Joey2o11 said:
Personally i'd just buy the cheapest MHL adaptor you can find. It's just a cable so why pay a fortune for it.
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Click to collapse
I actually did by the cheapest MHL adapter I could find on ebay and it works like a charm. Cost me around 6 € including shipping.

hi guys.
why cant we use the camera app when using the MHL function?...is it a hardware restriction?...i was using cm9 and when i start the camera with the adapter plugged in then close the camera app ,for a second the camera screen shows up on the tv.....if its hardware restricted then it would not do that at all...

on my mhl cable only outputs 1080i,is it adaptors fault?
Enviado desde mi GT-I9100 usando Tapatalk 2

Questions about HDMI dock

First of all, I already ordered original Samsung MHL adapter, as it's much cheaper, and I will use it from time to time. I also got the audio dock for charging, and not use the usb. And ordered original Samsung OTG adapter.
Now for my questions, from what I know, the HDMI dock can charge, and use HDMI to connect to TV, but it's limited to videos only? or not?
and second question, what if I connect OTG adapter to the microUSB on the dock? will it work? or it same limited port, like in MHL adapter?

What, no buddy here have the HDMI dock?

E15i said:
First of all, I already ordered original Samsung MHL adapter, as it's much cheaper, and I will use it from time to time. I also got the audio dock for charging, and not use the usb. And ordered original Samsung OTG adapter.
Now for my questions, from what I know, the HDMI dock can charge, and use HDMI to connect to TV, but it's limited to videos only? or not?
and second question, what if I connect OTG adapter to the microUSB on the dock? will it work? or it same limited port, like in MHL adapter?
Click to expand...
Click to collapse
I read something somewhere that running pre-4.0.4 stock would actually allow the HDMI dock to function as a mirror. I didn't have this with AOKP 4.0.3 however. My phone is limited to just video (Currently 4.0.4 AOKP). I'd love it if I had the option to use the dock for mirroring.
The OTG adapter shouldn't work with the USB port, as it's limited to charging, no data. Says so in the manual for the dock.

Ohh, I just not sure if to cancel the order of MHL adapter, sure it's more handy, and small, so if I go to a friend, I can get the adapter with me...
The thing is, that here: http://www.droid-life.com/2012/03/23/review-samsung-galaxy-nexus-hdmi-portrait-desktop-dock/
according to manual it say:
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So they recommend to update the ROM to thelatest, but they also say it limited to video only. on other hand, pre 4.0.4....yes you guess it, there was no any dock settings in the ROM, but it worked just like the much cheaper MHL adapter, I already spent some cash on the Pogo Dock, so my microUSB stay still ,
I know it more good looking with the dock, but if it really limited, then **** Samsung.
P.S, can anybody here comment on latest stock 4.0.4? is there same limitation to video only? because, you see, I have HTPC in one room, and watch movies and other stuff with it, so spent money on some sheet I may use from time to time, is stupid, as the Pogo Dock at least save my microUSB port, and even have line out with an option to use optical cable, but the HDMI dock, only can show videos, so why the **** I need it then ? I do see it good with emulators if I not at hotel or something, but if MHL adapter can mirror, and it cost much much less, why buy that dock? also some aftermarket HDMI docks can mirror the screen, like that:
http://www.ebay.com/itm/Samsung-Gal...s_Adapters&hash=item2ebd72c665#ht_2529wt_1859
hell, that thing, can charge, sync, and mirror hdmi, and even can work with phone in a case, **** Samsung guys, aftermarket sometimes can be over 9000 times better that original, to bad there no pogo aftermarket one.

Bump

I have both OEM OTG adapter and MHL adapter for my GNex. I am running IMM76K deodexed, zipaligned. I can view files from flash drive, connect external drive, or do almost anything you can do with a computer using OTG adapter. And I can mirror phone on TV w/ MHL adapter w/sound and everything.
Sent from my Galaxy Nexus using XDA

The thing is, that the phone recognize the dock as a different accessory, not like regular MHL adapter, but most people I asked, on 4.0.4 it not mirror .
anyway I ordered the MHL adapter, and OTG, original Samsung BTW, I will need them just in case, but that case both cost less then that crap dock, but I could not resist not to buy the pogo dock , I know it not cheap, but it a cheap price for working micoUSB port
PS, check Kidigi docks, they support MHL, and even can charge second battery, sync, charge, and fit a phone with a case on it.

I bought the official pogo desktop dock from the Play Store for my GSM Nexus with CM9 nightly on it.
The dock's micro USB port ONLY works for charging!
If you plug it into a computer's USB, it will charge but will not connect, manually even says not to plug it into the computer because it may damage the dock, says to use a charger.
So not sure if OTG will work or not.

I just opened the box. Plugged in a USB drive in the back of the dock, no power is being supplied to the drive. I am not using an OEM Samsung otg cable. If undock and plug in the USB drive straight tot the phone it world no problem.
I will try with a powered HD and ill experiment with mirroring and non video outputs
edit: the dock does work with the OEM extended battery (w/ no case), it's a little tight, but actually fits pretty good

[Q] How can I run MHL adapter and wireless keyboard at the same time?

I don't want to shell out for the smart dock and I think this 4 port usb hub(non powered) would work. I would plug the USB OTG cable in to my note 2, then plug in the USB hub, followed by my Logitech K400 in to one of the four port, then a MHL adapter to one of the four USB port, run power to the MHL adapter, then an HDMI cable from MHL adapter to the TV when ever I want to surf the internet using my phone using wireless keyboard/mouse and displaying it on the tv. Will that work or will I need a powered USB hub?
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sorry to break it to you but the mhl adapter is micro usb
Sent from my SPH-L900 using xda app-developers app

reinaldistic said:
sorry to break it to you but the mhl adapter is micro usb
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
How did I miss that! So if I get a female micro to male USB will it work? I mean will the HDMI signal still pass thru the hub out to the MHL adapter. Let me go watch the note 2 connectivity where that guy hooks half a million thing thru his powered usb hub.

aquaholik said:
How did I miss that! So if I get a female micro to male USB will it work? I mean will the HDMI signal still pass thru the hub out to the MHL adapter. Let me go watch the note 2 connectivity where that guy hooks half a million thing thru his powered usb hub.
Click to expand...
Click to collapse
no, the mhl adapter for our phones is the reason we have 11 pins in the micro usb port. the mhl adapter uses the 6 extra pins and thus the phone doesn't transmit hdmi signal through the 5 normal pins... also the mhl adapter only works if your phone is being charged through the extra usb port on the adapter itself.
I know you next question will be well then can I connect the usb otg adapter to the port on the mhl adapter. well for that you would pretty much have to build yourself some converters. you would need to supply power to the phone while at the same time supply power to the usb items you are trying to use. this presents a peculiar problem usb otg relies on shorting the grounding wire. if you make it shorted no charger will allow current through, if you don't short it the phone won't recognize that it had to become a usb host controller. you might get away with using some diodes to make the phone think it's shorted while the chargers think it's not, but I don't know enough about the whole process to know if the software on the phone would utilize that correctly... bottom line is I don't think it's possible.
Sent from my SPH-L900 using xda app-developers app

I was hoping I could use the logitech 400K while using the MHL adapter to TV. I guess I need to spring for a bluetooth keyboard or get the smart dock for 50% off while it is still on sale.

you could however take apart a dock and see how it's built (the Samsung dock allows for both usb and hdmi)
Sent from my SPH-L900 using xda app-developers app

Been watching that dock and they never seem to have it in stock. My coupon expires 12/13/2012.

Nexus 2013 Timur's kernal and 4port USB hub slow charging

Hello, so I have always had this problem of my phone charging so slow while using the 4 port USB I have installed in my car.
Here is the Hub I have: 4 port usb hub: StarTech.com Mountable 4 Port Rugged Industrial USB Hub (ST4200USBM)
I have used my Nexus 7 (2013) for GPS and if using it for long period of time I have noticed that the battery will actually go low even with it constantly charging while driving.
Here is the Cigarette Lighter car charger that I use: PowerGen® 4.2Amps / 20W Dual USB Car charger Designed for Apple and Android Devices - Black
I have it just plugged straight into the cigarette lighter with the USB cable going into the NA (Not Apple) port.
(A note, I had to use a USB extension cable to get the USB cable to reach the OTG cable.)
AmazonBasics USB 2.0 Extension Cable - A-Male to A-Female - 3.3 Feet (1 Meters)
Now I have the USB Hub wired from the 12V cigarette lighter, and I use 3 USB ports from it to either Charge 1 or 2 phones, and then have a USB Drive in the other so I can play music, watch a movie etc on the Tablet.
I went with the powered 4 port USB HUB so I could charge my phone(s) while driving but it is basically worthless for doing that I don't understand why. On my commute home which is almost an hour drive My phone will barely charge 10-15% no matter what level I started charging it at.
The Nexus 7 tablet will usually stay full charged if just doing normal stuff like playing music, surfing the net. But if I use heavy power program like GPS or Play a movie it will drop and it will say Charging but it will get low until I stop those programs and let charge back up.
I am using the latest version of Timur's kernel.
My concern is, I plan on driving a long distance in a month and would like to not have to worry about my GPS killing my Tablet Battery and getting stuck, and would like to be able to power up the Cell Phones so not having to stop at some store etc to try and find a charging station.
Thanks for your time. I am pretty open as to what I can do, so if you guys have tried and true solutions please let me know.
If you need to know my vehicle it is a 1998 Mitsubishi Eclipse GSX.

So...why not get a 4 port USB charger that actually delivers 2.4A to each individual port instead of trying to charge 3 devices off of a single 2.4A port?

Well I guess I thought this USB Hub was supposed to supply enough power to all ports.
I need the hub to be able to charge my devices as well as pass data to and from the Nexus 7.
This hub will allow for data exchange like I want, but has issues charging.
Is there a USB HUB that you would recommend?

I was hoping to achieve the same thing as you. I have a 3amp buck converter hooked up to my USB hub that I was hoping to charge my phone with through the hub.
The reason it won't work is because the data pins are not shorted so the phone will only charge at 500ma. Don't try shorting the data pins on the hub either because who knows what effect that could have on the hub.
Sent from my Nexus 6 using XDA Free mobile app

Just wanted to check and see if anyone has found a good USB HUB that supports 2.4A to each port.
I'm sure other people have found some sort of solution to be able to charge their devices fast and use it for data to Nexus 7.

What ma are you pulling in pem ?
What otg cable ?
Right now i have a 7 port hub
I can run waze and obd apps with wifi ,gps bluetooth on and i never drop below 100......Ever
How you should more or less have it setup should be like this
Good otg cable
12v - 5v converter powering the nexus throught otg cable
Second converter powering hub .
This otg cable is really good
https://www.amazon.com/gp/aw/d/B00N...687&sr=8-1&pi=SY200_QL40&keywords=otg+y+cable
...

Do you mean your nexus 7? I was having some issues with it staying full powered I recently switched out the Cigarette lighter charger for it and havent had any issues with the Nexus staying charged.
Now I just want to figure out how to charge my devices through the HUB and be able to do data transfer at same time.
My hub is powered from 12v source wired directly to it.

Data transfer from a hard drive ?
Your tablet should charge and use devices at the same time ....
What otg cable do you have ?

Right Angle Micro-B to Micro-B Female - 5 wire
Micro USB Host OTG Cable with Micro USB Power for Nexus 7 Galaxy S III & Galaxy Nexus
PowerGen 4.2Amps / 20W Dual USB Car charger Designed for Apple and Android Devices USB
StarTech.com Mountable 4 Port Rugged Industrial USB Hub (ST4200USBM)
Fosmon Snap-On Hard Rubber Protector Cover Case for Google Nexus 7 - Black
Behringer UCA222 Audio Interface
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Timur's kernel is important (otg+charge)!

I am looking for a hub that provides enough power to the USB ports to be able to charge more than just the tablet.
Example 2 people in car. Both need to charge their phone. Both plug into hub both get 2.1amps, AND 1 wants to play music from phone to car tablet. Should be able to do all from 1 plug, charge at 2.1 and play music from phone.
THis is the hub that I am thinking of but it only supplies 900mA. This is not enough to charge phone.
StarTech.com Mountable 4 Port Rugged Industrial SuperSpeed USB 3.0 Hub (ST4300USBM)
Does anyone have a better hub? Or some other method that I can do to get the 2.1 amps to each port, and be able to still transfer data over that hub?
Shoot worse case I am even willing to have a hub that has the 2.1amp for a couple of ports, and the rest are the 900mA. That way at least people not trying to stream can still get their phone charged quickly.
I don't know the method to go from a regular DC power cord to a car power but I will follow instructions if anyone has some.
Thanks. I am sure I am not the only person that is interested in this.