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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
I made a USB dongle that plugs into the USB port on the touchpad and provides a powered female USB-A port. It is basically a portable USB charger/battery with an OTG cable soldered to the USB port. Attached is a quick pdf showing the process. It's much smaller and more portable than using a y-cable and powered hub or battery pack.
The charger is $13 on Amazon with free prime shipping and OTG cables around $2 on ebay.
It's nice because it's small and I can secure it to the my case with a rubber band, providing a quick connection to a keyboard/mouse or usb flash drive. The particular charger charges via any powered USB port with a provided cable.
This is the battery pack I ordered, note the picture on the amazon page is not 100% accurate:
http://www.amazon.com/T-Mobile-Port..._1_1?s=wireless&ie=UTF8&qid=1325984238&sr=1-1
This is the cable I purchased, there are cheaper ones, but they ship from China:
http://www.ebay.com/itm/Micro-USB-O...ccessories&hash=item1e69fbb3c5#ht_1336wt_1398
Would that be powerful enough to power external portable hard drive like WD Passport?
gedas5 said:
Would that be powerful enough to power external portable hard drive like WD Passport?
Click to expand...
Click to collapse
Unfortunately, I don't have the power specs on the battery pack. If I come across a USB-powered hard drive, I'll test it.
scarletwahoo said:
I made a USB dongle that plugs into the USB port on the touchpad and provides a powered female USB-A port. It is basically a portable USB charger/battery with an OTG cable soldered to the USB port. Attached is a quick pdf showing the process. It's much smaller and more portable than using a y-cable and powered hub or battery pack.
The charger is $13 on Amazon with free prime shipping and OTG cables around $2 on ebay.
It's nice because it's small and I can secure it to the my case with a rubber band, providing a quick connection to a keyboard/mouse or usb flash drive. The particular charger charges via any powered USB port with a provided cable.
This is the battery pack I ordered, note the picture on the amazon page is not 100% accurate:
http://www.amazon.com/T-Mobile-Port..._1_1?s=wireless&ie=UTF8&qid=1325984238&sr=1-1
This is the cable I purchased, there are cheaper ones, but they ship from China:
http://www.ebay.com/itm/Micro-USB-O...ccessories&hash=item1e69fbb3c5#ht_1336wt_1398
Click to expand...
Click to collapse
that looks nice.. but you re saying that its plug and play?..
you dont have to mount/unmount?
why didnt you get one w/ more usb ports?
your pics are clear.
i wonder how easy it is to do the battery hub like yours but w/ 4 usb ports
Nicely done, very good solution and tutorial. again excellent!!!!
amkaos said:
that looks nice.. but you re saying that its plug and play?..
you dont have to mount/unmount?
why didnt you get one w/ more usb ports?
your pics are clear.
i wonder how easy it is to do the battery hub like yours but w/ 4 usb ports
Click to expand...
Click to collapse
http://www.amazon.com/Solar-Powered-Battery-Charger-Adapter/dp/B006DVMW92
This hub has 4 ports, a battery plus solar charging. That said, if I buy it I'll probably just plug it directly into the OTG cable rather than solder them together. Then again my soldering can be a little rough.
- Sent from a Prime terminal using a friends account
So can we only use the Micro Usb OTG host to connect to a USB drive/keyboard?
tpcm said:
So can we only use the Micro Usb OTG host to connect to a USB drive/keyboard?
Click to expand...
Click to collapse
yes plus 10char
Deserves sticky, love mods like this even if not always practical.
Cant believe they didnt give the touchpad a powered usb host. I guess they figured people would have issues with not enough power or drain the battery too quick with it.
So I think when I have some spare time I may mod your mod and show how to make a powered usb host that plugs into the wall charger so when your "docking" somewhere to charge you can hook up a keyboard and use it without restriction and even be charging the touchpad at the same time.
Probably don't even need to be too creative a proper Y cable may do the trick out the gate. Just to track one down.
Probably a stupid question, but it wouldn't be my first one...
Could you simply use a USB male-to-male cable to go between the battery pack and the OTG cable? Eliminate the soldering that way?
Or am I missing something?
I found a cable that I think will work perfectly for my idea of doing this from the charger instead of from battery: http://www.dealextreme.com/p/usb-fe...gb-tf-card-card-reader-kit-for-xtc-clip-82289
You can do it much cheaper with adapters and a regular y adapter though, and you may want to do so, so that you can have a longer cable from the charger to the y split, but yeah I will try this out sometime soon and let you know how it works.
The charger probably gives enough power to easily run things like a external HDD and such while the battery pack may not.
@Vicious ... couldn't that possibly put too much power to a USB device? Just saying since it is probably meant to be hooked up to a regular USB 5v port and (I don't know the specifics but) the touchpad USB power adapter has a high AMP output (might be talking sht here).
Nothing to worry about a device only "pulls" the amperage it needs so you can have extra with no harm to the device. It is the voltage that needs to match and usb is standard 5v.
Having too little amperage can actually cause a device harm due to malfunction, like a head crashing on a 2.5" hdd during use or a thumb drive failing to flash properly corrupting a sector.
I feel anybody that uses the touchpad in a docked setting that wants to use a keyboard may very well make use of my idea, that I of course got from the OP's idea.
I'll part it out for the cheapest way to make it without any cutting/soldering and test it soon enough.
mountaindewmi said:
@Vicious ... couldn't that possibly put too much power to a USB device? Just saying since it is probably meant to be hooked up to a regular USB 5v port and (I don't know the specifics but) the touchpad USB power adapter has a high AMP output (might be talking sht here).
Click to expand...
Click to collapse
That cable will work fine. I wasn't doing anything special, only eliminating the y-cable. I mainly wanted a small form factor way of adding a USB port to my case for portability. Now I can put a movie on a usb drive and watch it on the go.
You generally don't have to worry about using a supply that is to powerful. As long as the voltage output is 5 V, the device will only draw a certain current and consume the corresponding amount of power. The rating on a constant voltage supply is simply the maximum current it can provide, the amount it provides depends on the properties of the device.
Say you have a device, it states it operates at 5 V and draws 100 mA of current. That means the impedance of the device is R = V / I = 50 ohms. So if you use a 5 V supply rated to at least 100 mA, the device will only draw 100 mA. The supply can be rated for 100 mA or 1000 amps, it does not matter. (Although you wouldn't want to use 1000 A source as if something breaks or shorts it can draw a higher current)
Wikipedia "ohms law" if you are not familiar.
I tried to do this but can't get it to work, the touchpad shows the charging battery icon only it's not charging, and running dmesg it say source=charger mA=100 and usb otg exited low power mode and then right after says it entered low power mode... Not sure what the issue is...
edit: I'm thinking it may be my soldering work, gonna give it another pass...
joenathane said:
I tried to do this but can't get it to work, the touchpad shows the charging battery icon only it's not charging, and running dmesg it say source=charger mA=100 and usb otg exited low power mode and then right after says it entered low power mode... Not sure what the issue is...
edit: I'm thinking it may be my soldering work, gonna give it another pass...
Click to expand...
Click to collapse
You may have the two data pins shorted together. To the best of my knowledge, this tells the touchpad to go into charging mode. The touchpad charger does this, because in order to charge, it must draw more power than USB ports are designed to provide.
You need to remove the two resistors circled in the PDF. These keep the data pins shorted together as well.
This is a really great idea I think I might try it and your tut is very well explained thanks for taking the time out to put it all together
Thanks
Mouse works fine, keyboard hasn't been tried yet. How do you access a flash drive through this? What are the steps?
If you just cut out the resistors in the battery hub, could you just use the TP's regular cable to plug into one of the ports on the hub?
tpcm said:
Mouse works fine, keyboard hasn't been tried yet. How do you access a flash drive through this? What are the steps?
Click to expand...
Click to collapse
Stick mount works great
Sent from my CM9 TouchPad
hey.
i have sailed the internetz looking for answers for this. but i thought ild ask what everyone else thought.
would atrix lapdock work with sg2? (with mods off course) like changing the connectors about. and using a mhl to hdmi cable?
i was looking at the connectors and it is a micro hdmi and a micro usb if im not wrong..
whats everyones thoughts to this???
Timoxa said:
hey.
i have sailed the internetz looking for answers for this. but i thought ild ask what everyone else thought.
would atrix lapdock work with sg2? (with mods off course) like changing the connectors about. and using a mhl to hdmi cable?
i was looking at the connectors and it is a micro hdmi and a micro usb if im not wrong..
whats everyones thoughts to this???
Click to expand...
Click to collapse
My thoughts; not sure if serious...
ctomgee said:
My thoughts; not sure if serious...
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what do you mean by that? its a valid question.
i know for sure you can connect your sg2 to the hdmi to display. but its the trackpad and keyboard im wondering about the most?
Timoxa said:
what do you mean by that? its a valid question.
i know for sure you can connect your sg2 to the hdmi to display. but its the trackpad and keyboard im wondering about the most?
Click to expand...
Click to collapse
NO.
Atrix has two different output ports. Micro USB for charging and data transfer, and micro-HDMI for TV-out. The laptop dock specific (I stress specific) for the Atrix uses BOTH of these ports in conjuction.
Galaxy S2 has ONE output port, a micro USB port that doubles for charging/data transfer, and connection to the optional MHL adapter accessory.
In NO WAY would you be able to MacGyver the Galaxy S2 to use the Atrix laptop dock.
ctomgee said:
NO.
Atrix has two different output ports. Micro USB for charging and data transfer, and micro-HDMI for TV-out. The laptop dock specific (I stress specific) for the Atrix uses BOTH of these ports in conjuction.
Galaxy S2 has ONE output port, a micro USB port that doubles for charging/data transfer, and connection to the optional MHL adapter accessory.
In NO WAY would you be able to MacGyver the Galaxy S2 to use the Atrix laptop dock.
Click to expand...
Click to collapse
alright. well thanks for the answer. guess il have to look for another idea. possibly using portable hd screen and a bluetooth mouse and keyboard.
cheers anyway.
ctomgee said:
NO.
Atrix has two different output ports. Micro USB for charging and data transfer, and micro-HDMI for TV-out. The laptop dock specific (I stress specific) for the Atrix uses BOTH of these ports in conjuction.
Galaxy S2 has ONE output port, a micro USB port that doubles for charging/data transfer, and connection to the optional MHL adapter accessory.
In NO WAY would you be able to MacGyver the Galaxy S2 to use the Atrix laptop dock.
Click to expand...
Click to collapse
Timoxa said:
alright. well thanks for the answer. guess il have to look for another idea. possibly using portable hd screen and a bluetooth mouse and keyboard.
cheers anyway.
Click to expand...
Click to collapse
You know... it just might work. The atrix lapdock does feed 5v power up the usb port which you could adapt from micro usb to whichever varient you need on your MHL cable. This would provide the power necessary to drive the hdmi circuitry that you had feeding into the micro hdmi input of the lapdock. Obviously you wouldnt have a true 'dock' but it sounds like you understand that. As long as your phone detected the mouse and keyboard as input devices it should work. Not sure how that operates with an MHL cable. It might require USB OTG, and im not sure if that is available over the USB connectivity provided by MHL. You could try with a standard usb keyboard If that works, then the lapdocks should too.
I know for certain that you can use the lapdock as the screen by just connecting the video out of the MHL adapter to the lapdock, and a usb power only cable (for the MHL adapter) to the lapdocks normal USB charge ports.
There is a thread called Lapdock HDMI that has more details!
http://forum.xda-developers.com/showthread.php?t=1376679
As for the person saying it is or was impossible... you so sure now?
phire420 said:
You know... it just might work. The atrix lapdock does feed 5v power up the usb port which you could adapt from micro usb to whichever varient you need on your MHL cable. This would provide the power necessary to drive the hdmi circuitry that you had feeding into the micro hdmi input of the lapdock. Obviously you wouldnt have a true 'dock' but it sounds like you understand that. As long as your phone detected the mouse and keyboard as input devices it should work. Not sure how that operates with an MHL cable. It might require USB OTG, and im not sure if that is available over the USB connectivity provided by MHL. You could try with a standard usb keyboard If that works, then the lapdocks should too.
Click to expand...
Click to collapse
ive seen some mhl cables online which have a micro usb port on the side also. so you can plug in the micro hdmi and usb at the same time .. not as the other guy said. anyway im going to order the dock to see what mods i can get done. if anything promising il repost.
phire420 said:
You know... it just might work. The atrix lapdock does feed 5v power up the usb port which you could adapt from micro usb to whichever varient you need on your MHL cable. This would provide the power necessary to drive the hdmi circuitry that you had feeding into the micro hdmi input of the lapdock. Obviously you wouldnt have a true 'dock' but it sounds like you understand that. As long as your phone detected the mouse and keyboard as input devices it should work. Not sure how that operates with an MHL cable. It might require USB OTG, and im not sure if that is available over the USB connectivity provided by MHL. You could try with a standard usb keyboard If that works, then the lapdocks should too.
I know for certain that you can use the lapdock as the screen by just connecting the video out of the MHL adapter to the lapdock, and a usb power only cable (for the MHL adapter) to the lapdocks normal USB charge ports.
There is a thread called Lapdock HDMI that has more details!
http://forum.xda-developers.com/showthread.php?t=1376679
As for the person saying it is or was impossible... you so sure now?
Click to expand...
Click to collapse
That thread is from the Atrix forum. What bearing does that have on the argument on getting this working on an S2??
Have you even looked at the connections involved here?
The Atrix's micro USB and micro HDMI port are side by side, and the dock plugs into both of them.
The MHL cable plugs into the ONLY port on the S2.
So I'm certainly not an expert on the inner workings of MHL, USB, and HDMI, but from what I can gather, you would have to splice an MHL cable to separate out the USB leads from the HDMI leads, then try to run the HDMI leads into a micro HDMI female port, and run the USB leads to a female micro USB port. I don't even know if that would work with MHL in the equation. I'm fairly certain the phone detects what is plugged in and decides how to use the port, which shoots this down idea down altogether... unless more hacking is involved into the OS. Which is way above my head, and I'm not fool enough to try.
See this thread, which is admittedly for the Galaxy Nexus, but is WAY more relevant than the Atrix thread you linked, as the GNex is also manufactured by Samsung, and also uses MHL technology.
Timoxa said:
ive seen some mhl cables online which have a micro usb port on the side also. so you can plug in the micro hdmi and usb at the same time .. not as the other guy said. anyway im going to order the dock to see what mods i can get done. if anything promising il repost.
Click to expand...
Click to collapse
No - the micro USB port on the side of the MHL adapter is for power. If the HDMI port you plug into is NOT MHL compliant (and not many are, yet), you need to plug an AC adapter in to power the phone while HDMI is in use.
ctomgee said:
That thread is from the Atrix forum. What bearing does that have on the argument on getting this working on an S2??
Have you even looked at the connections involved here?
The Atrix's micro USB and micro HDMI port are side by side, and the dock plugs into both of them.
The MHL cable plugs into the ONLY port on the S2.
So I'm certainly not an expert on the inner workings of MHL, USB, and HDMI, but from what I can gather, you would have to splice an MHL cable to separate out the USB leads from the HDMI leads, then try to run the HDMI leads into a micro HDMI female port, and run the USB leads to a female micro USB port. I don't even know if that would work with MHL in the equation. I'm fairly certain the phone detects what is plugged in and decides how to use the port, which shoots this down idea down altogether... unless more hacking is involved into the OS. Which is way above my head, and I'm not fool enough to try.
See this thread, which is admittedly for the Galaxy Nexus, but is WAY more relevant than the Atrix thread you linked, as the GNex is also manufactured by Samsung, and also uses MHL technology.
No - the micro USB port on the side of the MHL adapter is for power. If the HDMI port you plug into is NOT MHL compliant (and not many are, yet), you need to plug an AC adapter in to power the phone while HDMI is in use.
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Click to collapse
well. theres allot of different mhl cables. even if none of them support it. splitting the usb data from the other cables on the mhl should be easy. but like i said il order one to play with. im pretty sure even if i cant do anything with the sg2 il find another use for it. would be great for a project. but many thanks for your input. sure has shed some light in the dark.
Timoxa said:
well. theres allot of different mhl cables. even if none of them support it. splitting the usb data from the other cables on the mhl should be easy. but like i said il order one to play with. im pretty sure even if i cant do anything with the sg2 il find another use for it. would be great for a project. but many thanks for your input. sure has shed some light in the dark.
Click to expand...
Click to collapse
Sure, there are a lot of MHL cables, but they are all essentially third party versions of the OEM Samsung MHL cable. (or whatever phone manufacturer you have that uses MHL - HTC, whatever)
I have high doubts ANY MHL cable will support it, since as I said, the phone will detect what type of connection is attached to decide how to send/receive signals from the port - if it sees the MHL adapter, it will do charge/HDMI; if it sees a regular USB cable, it will do charge/data transfer/OTG; if it sees an AC adapter, it does strictly charging. Notice how it can tell the difference when you have it plugged into your computer as opposed to when you have it plugged into the wall?
But if you want to go for it, good luck.
EDIT: yet another piece of info shooting this idea down.
Here's the video that he talks about in that post. Info specific on why this DOESN'T work is at about 7:25.
ctomgee said:
Sure, there are a lot of MHL cables, but they are all essentially third party versions of the OEM Samsung MHL cable. (or whatever phone manufacturer you have that uses MHL - HTC, whatever)
I have high doubts ANY MHL cable will support it, since as I said, the phone will detect what type of connection is attached to decide how to send/receive signals from the port - if it sees the MHL adapter, it will do charge/HDMI; if it sees a regular USB cable, it will do charge/data transfer/OTG; if it sees an AC adapter, it does strictly charging. Notice how it can tell the difference when you have it plugged into your computer as opposed to when you have it plugged into the wall?
But if you want to go for it, good luck.
EDIT: yet another piece of info shooting this idea down.
Here's the video that he talks about in that post.
Click to expand...
Click to collapse
i pretty much thought the usb and hdmi wouldnt work from the beginning, il have to look into modding the dock to allow bluetooth. ive have just looked at the specifications of a mhl even though they can in theory support usb and hdmi at the same time. the sg2 wont. and i cant see any software mod that would allow this. il see what sort of bluetooth mods are available. maybe incorporate stuff i have done in the past. but the dock is too good to pass by.
i think we can close this thread as its been answered.
Timoxa said:
i pretty much thought the usb and hdmi wouldnt work from the beginning, il have to look into modding the dock to allow bluetooth. ive have just looked at the specifications of a mhl even though they can in theory support usb and hdmi at the same time. the sg2 wont. and i cant see any software mod that would allow this. il see what sort of bluetooth mods are available. maybe incorporate stuff i have done in the past. but the dock is too good to pass by.
i think we can close this thread as its been answered.
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Click to collapse
Not to nitpick, but it's MHL 1.0 that won't support it. The GS2 just uses MHL. Who knows if there's a possibility to update it to whatever MHL 2.0 is, whenever it comes out.
Sent from my GT-I9100 using XDA App
ctomgee said:
That thread is from the Atrix forum. What bearing does that have on the argument on getting this working on an S2??
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Click to collapse
Noone is 'arguing', instead I am trying to be productive and help. Forgive me opening the door to actually trying it and thinking it through instead of just saying 'THERE IS NO WAY ITS POSSIBLE, OMG ATRIX FORUM'. you do know where you are.. right?
ctomgee said:
Have you even looked at the connections involved here? The Atrix's micro USB and micro HDMI port are side by side, and the dock plugs into both of them. The MHL cable plugs into the ONLY port on the S2.
Click to expand...
Click to collapse
yes, of course. you couldn't tell by my reply?
ctomgee said:
So I'm certainly not an expert on the inner workings of MHL, USB, and HDMI, but from what I can gather, you would have to splice an MHL cable to separate out the USB leads from the HDMI leads, then try to run the HDMI leads into a micro HDMI female port, and run the USB leads to a female micro USB port. I don't even know if that would work with MHL in the equation.
Click to expand...
Click to collapse
Right, which is why i even posted in the first place. First you claimed to know, now you dont know, not very helpful. and yes, i think its understood there would be cables and a potential need for splicing, as outlined in the other lapdock thread.
ctomgee said:
See this thread, which is admittedly for the Galaxy Nexus, but is WAY more relevant than the Atrix thread you linked, as the GNex is also manufactured by Samsung, and also uses MHL technology.
Click to expand...
Click to collapse
actually the other thread is perfectly relevant, if you read it, you would understand the point of the thread is a howto on interfacing the lapdock with devices OTHER than the atrix, how could it be more relevant?
phire420 said:
Noone is 'arguing'
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Click to collapse
Seriously? You're arguing that no one is arguing? By arguing?
phire420 said:
instead I am trying to be productive and help. Forgive me opening the door to actually trying it and thinking it through instead of just saying 'THERE IS NO WAY ITS POSSIBLE, OMG ATRIX FORUM'. you do know where you are.. right?
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Click to collapse
Yes, I do. In the I9100 forums. Which is based on completely different hardware and architecture than the Motorola Atrix.
phire420 said:
ctomgee said:
Have you even looked at the connections involved here? The Atrix's micro USB and micro HDMI port are side by side, and the dock plugs into both of them. The MHL cable plugs into the ONLY port on the S2.
Click to expand...
Click to collapse
yes, of course. you couldn't tell by my reply?
Click to expand...
Click to collapse
Clearly not, since you apparently understand less about how MHL works than I do.
phire420 said:
ctomgee said:
So I'm certainly not an expert on the inner workings of MHL, USB, and HDMI, but from what I can gather, you would have to splice an MHL cable to separate out the USB leads from the HDMI leads, then try to run the HDMI leads into a micro HDMI female port, and run the USB leads to a female micro USB port. I don't even know if that would work with MHL in the equation.
Click to expand...
Click to collapse
Right, which is why i even posted in the first place. First you claimed to know, now you dont know, not very helpful. and yes, i think its understood there would be cables and a potential need for splicing, as outlined in the other lapdock thread.
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Actually, I said I'm not an expert. Not that I didn't know. That's two different things. I notice you also conveniently left off the part of my quote after the part that said "I don't even know if that would work with MHL in the equation" which read:
ctomgee said:
I'm fairly certain the phone detects what is plugged in and decides how to use the port, which shoots this down idea down altogether... unless more hacking is involved into the OS. Which is way above my head, and I'm not fool enough to try.
Click to expand...
Click to collapse
phire420 said:
actually the other thread is perfectly relevant, if you read it, you would understand the point of the thread is a howto on interfacing the lapdock with devices OTHER than the atrix, how could it be more relevant?
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Click to collapse
Sure, relevant. But not, at the same time. Look at post 10 of that thread. It says "The lapdock keyboard and touchpad work just like a normal USB keyboard and mouse."
Now, clearly I read the thread you linked. Did YOU read anything I linked, or watch the video featuring a spokesman from the frigging MHL consortium??? How he said HDMI out and USB will NOT work at the same time on any phone that utilizes MHL, not just the Galaxy S2? And goes on to explain why?
You started this fight with:
phire420 said:
As for the person saying it is or was impossible... you so sure now?
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in post 6. Get off your frigging high-and-mighty-horse, and crawl back under your bridge.
Timoxa said:
i pretty much thought the usb and hdmi wouldnt work from the beginning
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Video will work, but as ctomgee stated and linked, usb wont work at the same time
Timoxa said:
ill have to look into modding the dock to allow bluetooth.
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good luck m8 id love to see if you can pull this off!
you can always solder in a usb-Bluetooth tx so that the keypad and keyboard will work via bluetooth and hdmi via MHL. thats the only way
rmyc said:
you can always solder in a usb-Bluetooth tx so that the keypad and keyboard will work via bluetooth and hdmi via MHL. thats the only way
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Click to collapse
sounds like it's a possible solution, i'm trying to find a way to use the lapdock with my galaxy s3. any idea where we can get a usb-bluetooth tx? pair this setup with allshare dongle for wireless transmission to hdmi, we'll hv a total wireless solution to connect any phone to the lapdock?!
Hey there, i have tried gathering information about this subject and it seems all threads always lead to this announcement:
http://www.gottabemobile.com/2012/06/29/galaxy-s-iii-new-mhl-connector-also-enables-usb-on-go/
Short: Samsung have changed to an 11 Pin-out to enable USB OTG and MHL Hdmi out at the same time. I purchased an original HDTV Adapter (EPL-3FHUBEGSTD) which as far as i can reliably count indeed has about 11 connectors inside the USB connector that goes into the phone.
Now, i can get HDMI out just fine, but ONLY when i also connect the MHL adapter to a power source (a PC USB Port will do fine), however i have also read, that the phone is able to power the MHL adapter itself but obviously would not be charged then (no surprises there). This does not work however.
Further, connecting a USB OTG cable to the micro usb port on the MHL adapter does nothing. No notification and no devices connecting. No power either, since the LED on my USB Hub does not light up as it should. Connecting any devices to the hub does nothing to change that situation. If i leave out the MHL adapter and connect the USB OTG cable directly to the phone, everything works perfectly. I have tried this with 2 different OTG cables so they are not the problem.
This is an original genuine HDTV Adapter for our phones, which according to that post should be working fine with USB OTG.
AFAIK, this topic --does-- come up more frequently now as i can find a few more discussions about it, albeit none really helpful:
http://android.stackexchange.com/qu...-of-11-pin-mhl-connector-in-samsung-galaxy-s3
http://forum.xda-developers.com/showthread.php?t=1743128
http://forum.xda-developers.com/showthread.php?t=1803079
http://en.wikipedia.org/wiki/Mobile_High-Definition_Link#11-pin_MHL-USB_Connector
http://forum.xda-developers.com/showthread.php?t=1811435
That wiki entry is the most interesting link as it definitely states that using MHL and USB OTG simultaneously is possible and is also the reason why the 5 pin layout was changed to an 11 Pin layout.
Looking forward to reading your replies!
the ability to use MHL and OTG simultaneously would give the S3 so much more purpose. It is powerful enough to replace a desktop computer used only for light stuff like browsing and watching videos, and even simple gaming. If samsung made a dock like the one for the motorola atrix I'm convinced they will broaden their target group. The atrix got everything right with this but is inferior hardware wise. I love the idea of a one device for everything concept. Unfortunately it doesn't rhyme very well with the growth society.
Love the MHL and the OTG is even better only after I got the correct cables as the cables changed on S3 to the S2 version, unlimited space for watching films on my phone is now awesome and even better connecting it to to the TV just need a good dock,
is there perhaps any expert advise on this? According to multiple sources it should work but really doesnt. Did i buy the wrong mhl adapter?
I think they will only both work together when being used with an MHL enabled tv. That way the power comes from the tv and the usb on the adapter can be used for the usb-otg cable.
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But if i connected the MHL with the s3. Would sound come out of my phone AND my TV or just my TV. If it justs comes out of my TV, then can i hook up my bluetooth headphones and listen to my video or it would not allow me?
Thanks
joysleep said:
But if i connected the MHL with the s3. Would sound come out of my phone AND my TV or just my TV. If it justs comes out of my TV, then can i hook up my bluetooth headphones and listen to my video or it would not allow me?
Thanks
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I think you already got a reply in the other thread on this, you should use subscriptions.
mertzi said:
I think you already got a reply in the other thread on this, you should use subscriptions.
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It wasnt clear.
No1 knows the actual answer to this questions. Really frustraing
joysleep said:
It wasnt clear.
No1 knows the actual answer to this questions. Really frustraing
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Ah ok sorry! Afaik you should be able to choose your headphones as primary audio source in the bluetooth settings. I know I can choose what I want to be output to my bluetooth headset, but I don't own an MHL adapter so I don't know about that. Someone with one should be able to try it, and if they don't own a bluetooth headset/pair of headphones they could try with wired ones and see what happens.
mertzi said:
Ah ok sorry! Afaik you should be able to choose your headphones as primary audio source in the bluetooth settings. I know I can choose what I want to be output to my bluetooth headset, but I don't own an MHL adapter so I don't know about that. Someone with one should be able to try it, and if they don't own a bluetooth headset/pair of headphones they could try with wired ones and see what happens.
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I have recently received an MHL connector (5 pin type) and the samsung 11 to 5 pin adapter for it. I can confirm that if I plug my OTG cable into it, and then into my powered USB hub, I can get the MHL to work just fine, both video and audio. The OTG cable powers it just fine, but does NOT allow me to use other devices attached to the USB hub.
I am still researching. I suspect you need to bring all 11 pins off the phone with a splitter of some sort, or possibly wire data lines through the MHL. Probably not with the 5 pin MHL connector and 11 to 5 pin adapter, but with the full 11 pin MHL adapter. I am not up to that level of hardware hacking. I suspect whoever does it first can sell a BUNCH of them!
Oh, and I have a Moto Lapdock for my Raspberry Pi, and would love to hook my S3 to it too!
Scott
I'm looking to be able to use my external HDD (1TB WD passport) on my phone via OTG. As I understand, ntfs support varies with kernels etc but I'll cross that bridge when I come to it as I think there's a more fundamental problem.
I've got an OTG cable, and my mouse, usb pen drive, keyboard etc work with it. The HDD doesn't, because the phone can't provide enough power to operate the thing. I thought I could get around this by connecting it via my usb hub (which runs off external mains power) but when I connected this up to the phone and plugged the HDD in nothing happened. Likewise, the mouse and pen drive etc could also not be recognised by the phone when they were each plugged in via the hub (one at a time, I wasn't trying to run 8 things at once!) even though they worked perfectly when the phone itself was powering them when they were directly plugged into the OTG cable (if that makes any sense).
So, assuming it was a problem with the hub, I instead tried the method in this thread http://forum.xda-developers.com/showthread.php?t=1828032 and made my own y type cable so that now rather than the phone providing power to the OTG peripheral, the power now comes from a standard USB phone charger. I'm fairly confident that I did all the soldering correctly and there weren't any short circuits.
When I tried using this, I had the same issue as with the hub. None of the mouse, the pen drive etc could be recognised with the modified OTG cable, which was odd as physically nothing had changed from the point of view of the peripheral plugged into the OTG (the data cables connecting it to the phone were unchanged, and it was still getting 5V power, just from the wall rather than my phone) which makes me think perhaps the problem is a software one where the phone only recognises a USB peripheral/begins USB host mode if the peripheral is actually draining power, since the power leads running from the phone side of the OTG cable are now just an open circuit.
Just to confirm I hadn't just snipped a data cable by accident when modifying the OTG cable, I re-soldered the OTG cable to how it originally was and it worked the same way it had previously. This means all the data cables are still intact, so I think it must be a software issue.
I thought maybe a way of testing this would be to modify the y cable and connect the red and black power cables coming out of the phone to each other via a fairly hefty resistor (so you still get power flowing from the phone even though the USB peripheral is powered by the wall). But it seems a bit dangerous!
Has anyone else had trouble with this? I've read around on forums and for a lot of people USB hubs and y type OTG cables seem to "just work", although I've not seen anyone with an i9300 reporting success. I'm running the latest version of liquidsmooth, but have also tested on CM10.1 and have the same problem. It might be an AOSP thing that stock samsung firmware will fix?
Let me know your experiences!
TLDR: I'm pretty sure I've got a software issue where my i9300 only recognises a USB peripheral/begins USB host mode via OTG if the peripheral is actually draining the phone's power, and so doesn't work when a USB hub or externally powered (y type) OTG cable is being used.
Thank you!
It apparently only supports 500GB regardless of power source
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rootSU said:
It apparently only supports 500GB regardless of power source
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Really? That's odd - is that an android limitation or samsung? Either way it still seems weird that my y cable/hub didn't work for the mouse/keyboard, is that something you'd expect?
Sorry I didn't read that part.
I have a portable passive hub. Kb and mouse working fine...
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