[Q] MHL HDMI working through a USB hub? - Samsung Galaxy Nexus

I am interested in hooking up my GN to a monitor along with a mouse and keyboard. I just got bored and thought it would be fun to use my phone as a sort of computer.
I have made my own OTG USB cable and have hooked up everything separately and have full functionality of everything individually. The problem lies in the fact that video out requires a MHL HDMI adaptor... which occupies the USB plug on the phone, my only thought has been to use a USB hub as I don't have a bluetooth keyboard and mouse.
Before I go tearing up my MHL HDMI adaptor, does anyone know if it is possible to plug the MHL adaptor into the USB hub and have it work? Are there some issues with power that I haven't even considered, since the MHL adaptor has to have its own power and even supplies the phone with electricity when connected?
Its only a $10 part, so I am going to do it if I don't get a solid answer here and will report back if it works.
Thanks

Sorry, no it won't work. When the MHL is plugged in, the USB pins are reconfigured to do the video, USB data can't work simultaneously. The best way is to get bluetooth keyboard and mouse and use the MHL adapter for the video.

Related

[Q] Micro USB to USB Converter, mouse and keyboard simultaneously

Is it possible using this kind of converter to connect simultaneously a mouse and a keyboard together to the phone ? (for example using a wireless set mouse/keyboard or a usb splitter).
Can the phone provide the power to work on both devices ?
Maybe if it was possible to charge the phone somehow using the same cable ?
http://forum.xda-developers.com/showthread.php?t=1098778
I want to connect the phone to a tv using hdmi cable (adaptor) and control the phone from distance using a wireless keyboard/mouse.
thanks
I would be interested in this too. I saw EVO 4G used as a desktop computer - http://forum.xda-developers.com/showthread.php?t=1038840 but he used bluetooth mouse and keyboard and the only thing connected to its micro usb port was hdmi cable. I would rather use some kind of usb hub in order to connect these 3 devices to the micro usb port in the phone and even charge it all at once. If anyone knows if it is possible please share your knowledge
BT
Yes, you are right about Bluetooth. I believe it's the best solution (but more expensive) because when connecting the hdmi adaptor no other ports remain for other usb devices. Also hmdi adaptor charges the phone (for example BizLink MHL to HDMI TV-Out Adapter)
thanks
You might be able to run both USB mouse & keyboard; try using a keyboard that has a USB port or two on it, then plug the mouse into the keyboard's USB. Power may be a problem; the SGS2's USB connector isn't going to provide anywhere near the 500 mA in the USB 2.0 spec.
Of course, if you're using the USB, you can't use the MHL/HDMI, and vice versa -- the connector modes are mutually exclusive. If you have to have HDMI output, you should be able to use a BT keyboard and/or mouse.

Has anyone attached two USB devices?

I want to attach two usb devices to my Note.
One will be the MHL adapter and one will be the 2.4ghz wireless unit for a keyboard like this http://www.ebay.co.uk/itm/250996855143.
I need a Micro USB male to 1x Micro USB female and 1x USB female adapter.
These for some strange reason don't exist
I was just wondering if anyone has done anything similar.
I know I could get a Bluetooth keyboard, but I don't have one. I do however have the above keyboard
Oh wow! I'm interested into this keyboard! Does Lenovo Mini Wireless keyboard work perfectly with the Note? All buttons are recognized and trackball mouse is usable?
Its really good, i use it on my Note and my Libretto W100. The mouse and keyboard work perfectly.
vinokirk said:
I want to attach two usb devices to my Note.
One will be the MHL adapter and one will be the 2.4ghz wireless unit for a keyboard like this http://www.ebay.co.uk/itm/250996855143.
I need a Micro USB male to 1x Micro USB female and 1x USB female adapter.
These for some strange reason don't exist
I was just wondering if anyone has done anything similar.
I know I could get a Bluetooth keyboard, but I don't have one. I do however have the above keyboard
Click to expand...
Click to collapse
You cannot attach 2 or more devices to the same usb port. You need an usb hub for that, but I don't know if the MHL would work with the hub. I will try later today to attach an usb hub and connect more devices, and will report my findings.
br
d3m0n
Edit:
--------------------------------------------
I have successfully connected a self powered usb hub to the galaxy Note, and connected 2 thumb drives, a combo card reader, and a mouse. The Note mounted both of my thumb drives, as /usbstorage/sda and /usbstorage/sdb respectively. Then I inserted a mikroSD card into the card reader and the phone mounted it as sdc. I then inserted an sony memory stick into the card reader and it was mounted as sdd. All mounts were usable, and I could watch movies from them, and watch pictures, copy files from one to the other, etc... But, when I connected the mouse to the usb hub it didn't recognize it. Whatever combination I tried the Note would not recognize my mouse, when plugged into the usb hub. When plugged directly to the OTG cable it works perfectly, but won't work when connected to the hub (maybe cables are to long).
Using rooted stock xxla6 firmware.
Edit2:
---------------------------------------
Just found out, that usb otg and mhl cannot work simultaneously. When the MHL cable is plugged in, the GNote's microusb port will become an MHL port, and from that point it will not act as an usb host or usb slave. :-(
It's too bad, 'cause I really wanted to connect it to my full hd monitor and use a mouse and keyboard, too.
d3m0n1 said:
Edit2:
---------------------------------------
Just found out, that usb otg and mhl cannot work simultaneously. When the MHL cable is plugged in, the GNote's microusb port will become an MHL port, and from that point it will not act as an usb host or usb slave. :-(
It's too bad, 'cause I really wanted to connect it to my full hd monitor and use a mouse and keyboard, too.
Click to expand...
Click to collapse
How about bluetooth mouse+keyboard instead ? That would keep your USB port free for MHL
chriszzz said:
How about bluetooth mouse+keyboard instead ? That would keep your USB port free for MHL
Click to expand...
Click to collapse
That does work, and works a treat I might add.
Swyped from my finger, to your face on my Samsung Galaxy Note, using Tapatalk!
I like the idea of USB Hub
chriszzz said:
How about bluetooth mouse+keyboard instead ? That would keep your USB port free for MHL
Click to expand...
Click to collapse
This is the setup I'm going to do also. But as with topic, it's also very tempting to have everything USB powered. Since it will decrease latency and maybe power consumption as well? (as opposed to bluetooth) Well, MHL to HDMI will still drain our battery even if we connect it to power source
You can also try NZtechfreak's workaround:
http://www.androidnz.net/2011/11/samsung-galaxy-note-connectivity.html

Micro usb splitter?

Hi i wonder where i can buy a microusb splitter for my phone so that i can use, both usb keyboard and hdmi cable together. I just tried keyboard+mouse using a usb hub, and it worked fine...
does it even exist?
Sorry, but this can't work. When the phone is putting out HDMI, the USB can't be used as it takes the same connector pins. You can do what you want with a bluetooth keyboard and mouse, but sorry, not with wired.
try to find the smallest hub there is, that's the closest you will get to a usb splitter that works. Just splitting will never work, the signals have to be divided with some intelligence.
/edit... never mind didn't read the MHL/HDMI part... don't think that will work
I am also intrested in this topic. I want to plug in the HDMI cable and s remote controler. I want to use my phone as a media center.
tomig64 said:
I am also intrested in this topic. I want to plug in the HDMI cable and s remote controler. I want to use my phone as a media center.
Click to expand...
Click to collapse
You flat out can't; it is a limitation of the more common MHL implementation, and the Galaxy Nexus uses this MHL implementation.
Samsung had to use a new kind of MHL connection for the Galaxy S 3 to make this exact scenario possible.
*edit* You can plug in an HDMI cable and use a bluetooth remote, though, if that might work for your needs.

MHL + OTG possible?

As in title, is it possible to use MHL with OTG?
I mean like that : Phone->MHL->OTG, MHL need power to work from what I know, so what about mircoUSB Y cable-> MHL + OTG?
Negative friend. It does not work. Even if you have the connecters, the micro USB can only act as one or the the other at a time.
Thats the ONLY reason I bought an apple magic trackpad (the only bluetooth peripheral with pinch to zoom, yada yada), to control gnex when its pushing mhl to tv. See living digitally for a demo.
But does the device charge, when connected to MHL adapter then?
Yes, the MHL adapter needs to be plugged into a microUSB to function, it does power the phone. And if you are only pushing HDMI out, it should charge.
I have a fast charge ROM&kernel, so it will charge even if using hdmi, bluetooth, dowloading torrents....
Thank you, I just asked, as I will soon get the device, for now I only ordered the extended battery, and desktop dock. Not really want to use the usb port too much, also I dont know if I will need hdmi, btw, the hdmi dock have a usb port, but the dock not mirror the screen, only good for videos, and photos, so maybe it can use otg? I'm not sure, if the usb port only for charging, but again, it not use hdmi all the time, also I guess no good for games, mhl sucks guys, why couldnt they use separate hdmi, like motorola?
Not 100% sure, but I think the USB in the dock is only for charging, check out the reviews.
As for single port, I believe the Gnex, being google's vision for the fututre, is ahead of its time. Its supposed to be all wireless connections soon. Google Smart TV, bluetooth 3 & 4, WiDi, NFC.... see the trend. I'm suprised there are fewer bluetooth peripherals.
I would look at the next motorola phones to see where the future is going...

MHL with USB OTG?

Has anyone found a MHL cable that also includes a USB OTG port? Samsung reportedly changed from a 5-pin configuration to an 11-pin configuration to allow MHL with USB Host mode simultaneously. Perhaps for a future Desktop Mode?
Has anyone been able to find one of these cables?
Just wanted to update, I believe I found the type of connector that I was looking for, but it is missing HDMI and it is sold out. This essentially could give you PC type connectivity on the S3.
http://www.mobilefun.com/35462-mobile-fun-connection-kit-for-samsung-galaxy-s3.htm
I think we still have a bit of a wait. What you found is essentially a USB OTG hub with some card readers built in. I seriously doubt this will pass through the pins for HDMI to work out of the usb port. We'll see something when this phone finally launches everywhere. It's not even out in the US officially yet
EDIT: Sorry, didn't see the article in the link in the OP. Man.. I might have to get me a GS3 now. I'm quite satisfied with the reasoning for a pin change. =)
Samsung sells 11 pin MHL adapters and USB female to Micro USB male adapters on their accessories page, but I'm not sure if you could piggy back the USB input into the charging port of the MHL cable. I don't see any all in one cables on their site, and the desktop dock is just micro usb/audio. I tried.. =(
Here's what I was looking at.
Old and mostly unrelated. See edit.
I happened to buy what looks exactly like that adapter today earlier at Micro Center. Now, I do have a Galaxy Nexus, but the USB OTG works great with keyboards/usb/mice/hubs; however, I cannot get it to simultaneously work with my MHL adapter. I understand the GS3 has a different pin layout though for MHL - my phone works with my MHL adapter correctly, but I didn't think it would have any change on the USB OTG. I'll most likely be breaking these apart and start tinkering. My goal is to show people how much of a full desktop-like experience I can provide from my phone, since so many people somehow think a GNex or GS3 are inferior to tablets, just because they're smaller... lol
Good luck finding information out on some kind of MHL/USB OTG setup. I'm just trying to provide any information I can from how my situation works with MHL/OTG, since I'm currently on the quest to achieve this myself.
kynolin said:
EDIT: Sorry, didn't see the article in the link in the OP. Man.. I might have to get me a GS3 now. I'm quite satisfied with the reasoning for a pin change. =)
Samsung sells 11 pin MHL adapters and USB female to Micro USB male adapters on their accessories page, but I'm not sure if you could piggy back the USB input into the charging port of the MHL cable. I don't see any all in one cables on their site, and the desktop dock is just micro usb/audio. I tried.. =(
Here's what I was looking at.
Old and mostly unrelated. See edit.
I happened to buy what looks exactly like that adapter today earlier at Micro Center. Now, I do have a Galaxy Nexus, but the USB OTG works great with keyboards/usb/mice/hubs; however, I cannot get it to simultaneously work with my MHL adapter. I understand the GS3 has a different pin layout though for MHL - my phone works with my MHL adapter correctly, but I didn't think it would have any change on the USB OTG. I'll most likely be breaking these apart and start tinkering. My goal is to show people how much of a full desktop-like experience I can provide from my phone, since so many people somehow think a GNex or GS3 are inferior to tablets, just because they're smaller... lol
Good luck finding information out on some kind of MHL/USB OTG setup. I'm just trying to provide any information I can from how my situation works with MHL/OTG, since I'm currently on the quest to achieve this myself.
Click to expand...
Click to collapse
I'm not really sure why people think they NEED MHL and USB OTG simultaneously to get a "desktop-like experience". You can already accomplish this with just a plain MHL cable and a bluetooth keyboard and mouse as was demonstrated in the Connectivity Demo video on youtube.
Edit: Actually I just remembered about portable hard drives. If you want to hook up a mouse, keyboard AND hard drive I wonder if you can plug all three into a powered USB hub connected to a bluetooth dongle. Hmm...
I'm looking for a dock with USB OTG, charging and MHL. Maybe some day.
I believe this is already capable. Everything I say here is purely speculative, but what I see is that Samsung moved to a 11-pin connector for MHL and the standard 5-pin is no longer functioning. To call it MHL, they probably have to use the same standards for data encoding... but they simply "moved" the pins.
I put "moved" in quotes because of the way in which a standard 4 pin USB cable works (or 5 pin for our case)... you have a +5V, Ground, Data + and Data - (one data to phone, one data from phone, carrying ALL data). Since our phones still sync via 5-pin cables, this means the 5 pins are still "hot" for data like all other phones. I am presuming, that for the 11-pin connector, Samsung simply added a few more data+ and data- connectors (much like having two or three USB ports on a normal computer) but consolidated the ground/5V reference. I could be wrong, but it would make sense.
Lets call the stock 5 pin data connectors (2 wires) USB1. This is where MHL is conventionally sent through and all sycing can be completed through, 5 pin cable or 11 pin cable. If samsung added two additional USB ports to the single connector, lets say MHL is now over USB2 (wires inaccessible to 5 pin connectors). This frees up bandwidth and COM ports on USB1 and USB3 to use for accessories like a USB hard drive and keyboard/mouse. On a 5 pin connector, however, only USB1 is accessible. The Samsung 11pin to 5pin MHL adapter simply moves the data+/- from USB2 to USB1 (standard 5 pin location), so with the adapter you are syncing/exporting video over USB2 on the phone with a standard 5pin cable.
My thinking is such: If you plug in the OEM 11pin MHL adapter, it will also have access to the standard 5pin USB1 connection. Since USB2 is used for MHL, you can then plug any OTG device into the micro USB connector on the MHL adapter to make use of it. The only problem here is power (or lack thereof). By plugging in a USB hub with a discrete power source, plugging this into the MHL adapter, and plugging in the USB device of choice into the HUB, you *SHOULD* be able to get simultaneous data and HDMI. This assumes they put the standard 5 pins to the connector on the side of the MHL adapter and only wired the HDMI to the USB2 area.
Alternatively, you *SHOULD* be able to plug the micro USB cable from the MHL adapter into a computer, and simultaneously be able to sync files while outputting HDMI video. It sort of just comes down to being able to provide power to the MHL adapter on the +5V pin while using the data pins to access the phone. As soon as I have my MHL I'll figure it out, but that could be a bit. If anybody has access to a pinout from a Samsung 11 pin micro USB that would be helpful too.
Again, just dreaming here. I don't know anything about this, but if I was the engineer at Samsung I would choose this over analog outputs like Apple used for their giant connector.
kthung said:
I'm not really sure why people think they NEED MHL and USB OTG simultaneously to get a "desktop-like experience". You can already accomplish this with just a plain MHL cable and a bluetooth keyboard and mouse as was demonstrated in the Connectivity Demo video on youtube.
Edit: Actually I just remembered about portable hard drives. If you want to hook up a mouse, keyboard AND hard drive I wonder if you can plug all three into a powered USB hub connected to a bluetooth dongle. Hmm...
Click to expand...
Click to collapse
for me at least i already have several keyboards and mice ... none are bluetooth.
I'm looking for the cheapest option available.
I'm just hoping someone releases a cable with 4 plugs:
Male MHL - To Phone Obviously
Female MicroUSB: To plug in charger
Female HDMI - To Display
Female USB - To USB Device
That's all I want... should cost less than $2 to make, just sell it for $20 and I'd be happy.
v8bait said:
I believe this is already capable. Everything I say here is purely speculative, but what I see is that Samsung moved to a 11-pin connector for MHL and the standard 5-pin is no longer functioning. To call it MHL, they probably have to use the same standards for data encoding... but they simply "moved" the pins.
I put "moved" in quotes because of the way in which a standard 4 pin USB cable works (or 5 pin for our case)... you have a +5V, Ground, Data + and Data - (one data to phone, one data from phone, carrying ALL data). Since our phones still sync via 5-pin cables, this means the 5 pins are still "hot" for data like all other phones. I am presuming, that for the 11-pin connector, Samsung simply added a few more data+ and data- connectors (much like having two or three USB ports on a normal computer) but consolidated the ground/5V reference. I could be wrong, but it would make sense.
Lets call the stock 5 pin data connectors (2 wires) USB1. This is where MHL is conventionally sent through and all sycing can be completed through, 5 pin cable or 11 pin cable. If samsung added two additional USB ports to the single connector, lets say MHL is now over USB2 (wires inaccessible to 5 pin connectors). This frees up bandwidth and COM ports on USB1 and USB3 to use for accessories like a USB hard drive and keyboard/mouse. On a 5 pin connector, however, only USB1 is accessible. The Samsung 11pin to 5pin MHL adapter simply moves the data+/- from USB2 to USB1 (standard 5 pin location), so with the adapter you are syncing/exporting video over USB2 on the phone with a standard 5pin cable.
My thinking is such: If you plug in the OEM 11pin MHL adapter, it will also have access to the standard 5pin USB1 connection. Since USB2 is used for MHL, you can then plug any OTG device into the micro USB connector on the MHL adapter to make use of it. The only problem here is power (or lack thereof). By plugging in a USB hub with a discrete power source, plugging this into the MHL adapter, and plugging in the USB device of choice into the HUB, you *SHOULD* be able to get simultaneous data and HDMI. This assumes they put the standard 5 pins to the connector on the side of the MHL adapter and only wired the HDMI to the USB2 area.
Alternatively, you *SHOULD* be able to plug the micro USB cable from the MHL adapter into a computer, and simultaneously be able to sync files while outputting HDMI video. It sort of just comes down to being able to provide power to the MHL adapter on the +5V pin while using the data pins to access the phone. As soon as I have my MHL I'll figure it out, but that could be a bit. If anybody has access to a pinout from a Samsung 11 pin micro USB that would be helpful too.
Again, just dreaming here. I don't know anything about this, but if I was the engineer at Samsung I would choose this over analog outputs like Apple used for their giant connector.
Click to expand...
Click to collapse
hi v8bait, are you able to get data thru the micro usb port at the side of the 11-pin mhl adapter? i was thinking of using the motorola lapdock with my s3 thru the mhl adaptor (other then a micro hdmi male connector, the lapdock also has a micro usb male connector that apparently send out power as well as push keyboard/trackpad data upstream) - if it works, we can have an inexpensive "clambook"
Just to recap,
Will this we possible:
Official MHL adapter -> hdmi to monitor.
|
>OTG cable> Powered USB hub> USB keyboard & mouse.
In other words, the PC Experience with a keyboard and mouse.
Dont really want to spend the money to buy a Bluetooth keyboard and mouse when the USB ones can work just fine (theoretically).
romulusram said:
Just to recap,
Will this we possible:
Official MHL adapter -> hdmi to monitor.
|
>OTG cable> Powered USB hub> USB keyboard & mouse.
In other words, the PC Experience with a keyboard and mouse.
Dont really want to spend the money to buy a Bluetooth keyboard and mouse when the USB ones can work just fine (theoretically).
Click to expand...
Click to collapse
I am also very interested in this exact thing. Using USB devices (multiple ones, e.g. plugging a powered USB hub into S III and then plugging them in) but also putting out S III video to HDMI.
However the other workaround is using AllShare Cast. In fact that is the route I'll likely go, because of the other unique advantages of AllShare Cast (i.e. using it for presentations to screens, etc.)
So: has anyone plugged a powered USB hub into S III and used multiple devices? Such as a keyboard and mouse?
I also want to use this S III more as a computer. the other perfect thing I wish I could buy would be a keyboard case, like the one available for iphone, so I can prop the S III up on a kickstand and use a real mini-QWERTY physical keyboard.
macdroid01 said:
I am also very interested in this exact thing. Using USB devices (multiple ones, e.g. plugging a powered USB hub into S III and then plugging them in) but also putting out S III video to HDMI.
However the other workaround is using AllShare Cast. In fact that is the route I'll likely go, because of the other unique advantages of AllShare Cast (i.e. using it for presentations to screens, etc.)
So: has anyone plugged a powered USB hub into S III and used multiple devices? Such as a keyboard and mouse?
I also want to use this S III more as a computer. the other perfect thing I wish I could buy would be a keyboard case, like the one available for iphone, so I can prop the S III up on a kickstand and use a real mini-QWERTY physical keyboard.
Click to expand...
Click to collapse
We're in the same boat; i want to use the s3 like a mini computer too. I think it'd be great for business travel, when i dont really need a laptop during the day but want something when i'm back in hotel room. I'd much rather use hotel TV instead of a laptop because that's what i am used to at home... pc hooked to TV.
I've been planning to use the allshare cast dongle too, but they dont seem to be available yet. I was thinking HDMI out with the allshare.. charging with the wireless charging kit and then keyboard and mouse with USB OTG. My logitech unifying receiver for keyboard/mouse works perfectly i just need the wireless charging and allshare dongle to be released.
For what it's worth I tried a powered USB hub and could not get it to work with the s3.
faulkton said:
For what it's worth I tried a powered USB hub and could not get it to work with the s3.
Click to expand...
Click to collapse
Wait so your saying you tried a (a) powered USB hub with a OTG cable connected to the phone or you tried a (b) powered USB hub connected with a OTG cable to the MHL adapter and then to the phone?
If it was (a) then there are some vids out there of ppl using powered USB hubs.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
So has anyone received their Official MHL adapater and tried USB OTG?
Very interested in this.,,
I'm puzzled that there aren't any more postings about this kind of stuff. I was expecting the GS3 to be easy to use as a "PC" replacement but it seems no one besides us few wanted to do that ? A simple cable should have done it but I'd even be willing to shell out 40-50$ for a decent dock that would do just that
romulusram said:
So has anyone received their Official MHL adapater and tried USB OTG?
Very interested in this.,,
Click to expand...
Click to collapse
Me too.
But it is possible to get that this way working:
Code:
S3 -> Mobile Fun Connection Kit -> microusb -> HDTV Adapter TIP (5 to 11 Pin Converter) -> MHL HDMI adapter
|
-> USB -> keyboard etc.
Links
http://www.mobilefun.com/35462-mobile-fun-connection-kit-for-samsung-galaxy-s3.htm
http://www.samsung.com/us/mobile/cell-phones-accessories/EPL-FU10BEGSTA
Maybe I'm not reading these posts correctly but I am using an usb keyboard and a usb mouse on my S3 with no problems using these two accessories:
http://www.amazon.com/Belkin-USB-2-...e=UTF8&qid=1343845994&sr=8-1&keywords=usb+hub
http://www.amazon.com/Micro-USB-OTG...UTF8&qid=1343846045&sr=1-3&keywords=otg+cable
Have my keyboard and mouse plugged into the usb hub and then the usb hub into my usb OTG cable which of course plugs into the S3. Everything's working on my end.
romulusram said:
So has anyone received their Official MHL adapater and tried USB OTG?
Very interested in this.,,
Click to expand...
Click to collapse
I have the official MHL adapter and there is no female USB port on it for OTG
badbeat33 said:
Maybe I'm not reading these posts correctly but I am using an usb keyboard and a usb mouse on my S3 with no problems using these two accessories:
http://www.amazon.com/Belkin-USB-2-...e=UTF8&qid=1343845994&sr=8-1&keywords=usb+hub
http://www.amazon.com/Micro-USB-OTG...UTF8&qid=1343846045&sr=1-3&keywords=otg+cable
Have my keyboard and mouse plugged into the usb hub and then the usb hub into my usb OTG cable which of course plugs into the S3. Everything's working on my end.
Click to expand...
Click to collapse
You are not reading it right.
they want to use the MHL adapter, too.
As far as i can tell, the MHL adapter needs to be in the phone, not a hub. it is all dictated (the output being OTG, or MHL) by the impedance of what is plugged in. It is an either or situation.
Perhaps with a firmware update they MIGHT be able to run both signals and split it.. but i doubt it.

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