It says it's only been tested with CM10, but might also work with other ROMs. I finally got my Y cable, and I can confirm it works. [Using this cable from ebay, $6]
http://mehrvarz.github.com/otg-power-nexus7.html
This means you can plug in your flash drive or hard drive and use it while on AC power!
Update: for 4.2.x check this dedicated thread over on rootzwiki: http://rootzwiki.com/topic/37755-timurs-kernel-robust-usb-host-power-management/
Big thanks to XDA member t1mur and rootzwiki Timur for making the kernel!
This is awesome, just need to find a y-cable to try this out. Just hope its a stable kernel that doesn't cause any issues.
This is a great step in the right direction! Can't wait to see where this goes..
Hi Guys,
will this also work with a standard otg-cable and an usb-hub?
Cheers,
berkley
berkley said:
Hi Guys,
will this also work with a standard otg-cable and an usb-hub?
Cheers,
berkley
Click to expand...
Click to collapse
I don't think so for 2 reasons. Usually even powered usb hubs don't give out power through the input port [The source port of the hub]. And even if it did, it would be 500 mAh [the N7 charger is 2000 mAh], which [edit:] isn't enough enough to charge the N7 with the screen on. If the screen is off though, it will slowly charge it.
Also, apparently this is already implemented in Faux's beta kernel, you have to use echo to enable it [it's explained on the thread].
i am getting the 16GB. i am tired of waiting. I have one last question though. Can this in any way cause any type of damage on my device?
It's allow usb and AC charging or only usb ?
Awesome news, even though I just bought a regular OTG cable about a week ago for a $1.50 (still waiting for it to be delivered from China to the USA [NJ]). Since I just got a full-time job I'm going to sell my 8 GB and get one of the 32 GB versions when they become available so I won't have to worry about the extra cable
Can anybody confirm that it effectively works ?
Also, It would be good to to know:
- which Y-USB-OTG cable is used ?
- which power source, i.e. from a PC (500 mA) or a charger (2 A) ?
Huh? I have this already in my kernel for a while now... This is NOT something new
http://forum.xda-developers.com/showthread.php?t=1804374
faux123 said:
Huh? I have this already in my kernel for a while now... This is NOT something new
http://forum.xda-developers.com/showthread.php?t=1804374
Click to expand...
Click to collapse
Can you tell us some details ?
I am a little confused. The link says...
When a host mode adapter was recognized, charging of USB slave devices will NOT be activated and instead vbus will be raised in order to accept external charge.
If I want to use something that requires external power like a usb thumb drive, and the charging of usb slave devices is not activated; where does the slave device get the power to function? Is that shared off of the Y cable?
I know exactly what your talking about I have one for my old touchpad, ill try it on my nexus 7 see if it works.
Sent from my SGH-I777 using xda premium
Excited!
Can't wait for this! I'll be staying on top of this topic for awhile.
Alright I tried it using stock rooted using motleys kernel and while I could use a powered usb hub with 2 storage devices and a keyboard It wouldn't charge the N7 simultaneously. Although it didn't drain any power from the device either. Now this could be because of what I'm running or even one of the cords since I won't have a chance till the morning to test a couple more scenarios. All in all it definitely should be possible but may require a different kernel/rom etc. Though the OP asked the question regarding doing it w/o cm10 so ill try and stay within those parameters. On the touchpad I used to do it with cm9, as it was necessary especially with that device mostly only working with its 2amp charger. The reason I would only question cords used is I had previous trouble with an older kindle cable and when I tested it on a device I needed 1.5a it was hovering around 1.35a using my multimeter. Which was causing my Touchpad not to charge because it requires alot of power to charge. Ill update you on any progress and see I'f I can find the link foe the Ycable which I got on amazon awhile back.
Sent from my SGH-I777 using xda premium
I'm gonna have to do this. With this I will be able to finish my otg case
Sent from my Nexus 7 using XDA Premium HD app
I just read the code for the patch,its definitely looking like it will rely on the kernel as atleast in cm, USB slave charging mode needs to be suspended when recognized as host adapter. Regardless, I believe another Dev already implemented this and I'm sure others will.
Sent from my SGH-I777 using xda premium
Does anybody have this working with their Nexus 7 showing "Charging" on the Battery panel? The best I can get is "Not Charging" which does me no good for my car install.
dmexs said:
Does anybody have this working with their Nexus 7 showing "Charging" on the Battery panel? The best I can get is "Not Charging" which does me no good for my car install.
Click to expand...
Click to collapse
nope, i'm in the same boat as you...wish we could somehow trick the system but alas not yet!
daclothe said:
nope, i'm in the same boat as you...wish we could somehow trick the system but alas not yet!
Click to expand...
Click to collapse
Yeah. Now I'm toying with the idea of mounting a network share from a NAS-enabled router and put that in that in the car instead...effectively freeing up the USB port for full normal charging. I don't really like this route though because I suspect waiting for the router to boot every time the car is started will slow things down.
Related
Every time i plug in the charger it thinks im plugging in a dock. All it would do is go into docking mode. Now the battery is dead and it won't do anything. Anyone have any advice on a fix or alternate way to charge. I tried every way possible of resetting before it died but to no avail. I appreciate any and all help guys.
Sent from my SGH-T959V using XDA Premium App
Sent from my SGH-T959V using XDA Premium App
My streak 5 did this to me, without any time to waste I went to Best Buy and bought one flat out, tried the new cable and I was good to go, I kept the good cable and returned the new phone to Best Buy.... crappy thing to do I know but i couldn't go without and dell was the only place to get cable.
esox23 said:
My streak 5 did this to me, without any time to waste I went to Best Buy and bought one flat out, tried the new cable and I was good to go, I kept the good cable and returned the new phone to Best Buy.... crappy thing to do I know but i couldn't go without and dell was the only place to get cable.
Click to expand...
Click to collapse
Sounds like this might be a solution, unless it's the Streak7 that has the connectors wrong.
I'd guess that this has to do with the connexion points in the PDMI cable or port. It has pins that will trigger dock mode and pins that will trigger battery charging (iirc), so perhaps either the ones on the cable or on the S7 are switched around (or have some sort of jump going on due to poor QA).
Ugh, my new Dell 7 won't charge now either. I did charge it once, then flashed HoneyStreak, and now it won't charge. It can connect to my computer's USB port, but no charging.
I think I saw someone suggest to go back a version of HoneyStreak. Any suggestions?
chadmd23 said:
Ugh, my new Dell 7 won't charge now either. I did charge it once, then flashed HoneyStreak, and now it won't charge. It can connect to my computer's USB port, but no charging.
I think I saw someone suggest to go back a version of HoneyStreak. Any suggestions?
Click to expand...
Click to collapse
The S7 cannot charge from the computer USB port; it only works with the mains adapter supplied with the device.
stevedebi said:
The S7 cannot charge from the computer USB port; it only works with the mains adapter supplied with the device.
Click to expand...
Click to collapse
What's annoying is the LED goes red like it's charging, but it isn't... or it's draining faster than it's charging.
Z4nd4r said:
Sounds like this might be a solution, unless it's the Streak7 that has the connectors wrong.
I'd guess that this has to do with the connexion points in the PDMI cable or port. It has pins that will trigger dock mode and pins that will trigger battery charging (iirc), so perhaps either the ones on the cable or on the S7 are switched around (or have some sort of jump going on due to poor QA).
Click to expand...
Click to collapse
After looking further into my problem, i see now that part of the board where you plug it in at is broken. Dell sent me a new one, so im gonna crack it open and try bypassing the old charge port and put in a new usb port to charge it with. Then ill have two of them. Ill never know why dell didnt go usb on this thing anyway. Oh wait they did that so we cant buy aftermarket cables for it! Damn is dell owned by microsoft!! Lol. But thx for all the help and helpful ideas everyone!
Sent from my Dell Streak 7 using XDA Premium App
daniel3334 said:
After looking further into my problem, i see now that part of the board where you plug it in at is broken. Dell sent me a new one, so im gonna crack it open and try bypassing the old charge port and put in a new usb port to charge it with. Then ill have two of them. Ill never know why dell didnt go usb on this thing anyway. Oh wait they did that so we cant buy aftermarket cables for it! Damn is dell owned by microsoft!! Lol. But thx for all the help and helpful ideas everyone!
Sent from my Dell Streak 7 using XDA Premium App
Click to expand...
Click to collapse
I am having this problem with a new streak I got for one of my boys, the connector inside is broken. Did you ever get the part replaced? Or is it just an expensive paperweight? What did you have to do to change it out?
daniel3334 said:
After looking further into my problem, i see now that part of the board where you plug it in at is broken. Dell sent me a new one, so im gonna crack it open and try bypassing the old charge port and put in a new usb port to charge it with. Then ill have two of them. Ill never know why dell didnt go usb on this thing anyway. Oh wait they did that so we cant buy aftermarket cables for it! Damn is dell owned by microsoft!! Lol. But thx for all the help and helpful ideas everyone!
Sent from my Dell Streak 7 using XDA Premium App
Click to expand...
Click to collapse
I think they planned to have an expansion port, where the connector was used for other things, like HDMI perhaps. HP did the same thing with the Slate 500.
Sent from my Dell Streak 7 using xda premium
So I built a USB OTG adapter by shorting the ID pin to ground on the USB connector. This makes the Note go into host mode and start providing power out so it can talk to memory sticks and mice and keyboards.
Can I somehow through hardware or a custom kernel charge the note while in Host mode?
I want to build a little custom circuit for my Note that lets me charge it while in my car cradle but still talk to various USB devices like my OBDII adapter.
Yeah, nerdier than most Q&A, I'll try the development section if I do not get an answer.
David
I'm modifying an HP Ipaq keyboard from its ipaq interface to micro USB for my Note. I'm planning also putting in a powerpack and tiny powered USB hub to make the power connection.
If you got a small USB hub and gutted it then would that help?
Sent from my GT-N7000 using xda premium
I'm not sure if it will work but I plan to find out once the ebay sourced parts arrive
Sent from my GT-N7000 using xda premium
PurpleMelbourne said:
I'm not sure if it will work but I plan to find out once the ebay sourced parts arrive
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Dude, there is a small (but non-zero) chance you could permanently screw up your note doing what you describe (which is why I am asking the question instead of just hooking up a power supply and seeing what happens.
Most likely, nothing bad will happen but it won't work. You'll have two voltage sources fighting each other trying to push current in opposite directions but the relative difference in voltage will make for very small currents.
Worst case is you will fry something in your USB OTG chipset by shoving current into a system designed to push current out.
Second worst case is your battery pack goes boom because the Note is pushing current in to a regulator trying to push it out (unlikely).
David
So... PurpleMelbourne, what happened?
He killed his Note
Sent from my superior GT-N7000 using Tapatalk
Bump, I am still very much interested in this. Any help appreciated.
Hi,
I'm looking for a solution to connect at least two USB devices (keyboard & storage devices) and charge the tablet at the same time.
Is there anything like that currently available? I'm not looking for a dock!
No
Sent from my Nexus 7 using Tapatalk 2
Janzomaster said:
Hi,
I'm looking for a solution to connect at least two USB devices (keyboard & storage devices) and charge the tablet at the same time.
Is there anything like that currently available? I'm not looking for a dock!
Click to expand...
Click to collapse
No, the N7 currently does not support USB OTG Accessory Charging Adapters.
It may be possible to add support for these adapters with a kernel patch, but since I don't even own an ACA I can't even start on that until I do.
If the N7 supported ACAs, you could achieve what you want using an ACA and a hub.
So, we need to go beg for this in development? -Ara
Sent from my Nexus 7 using xda app-developers app
it would be nice to have that feature, so start the begging thread and I'll happily sign myself.
If I can ever find an ACA I'm probably going to order one and take a stab at implementing it - but it'll be a few weeks before I have time.
I have everything planed out for my tab install for my Dodge Magnum. But since the Nexus 7 doesnt have a sd slot I need to find a cable that can charge the tablet and use my flash drive at same time.
My flash drive(Usb on dash, so its easily removable)
http://www.amazon.com/gp/product/B00812F7O8/ref=ox_sc_act_title_4?ie=UTF8&smid=ATVPDKIKX0DER
Plugging this into the usb otg cable
http://www.amazon.com/Black-4-Port-...qid=1348442221&sr=8-3&keywords=4+port+usb+hub
I would love host cable with 2 usb inputs but cant seem to find it and dont know if its even possible.
Any help would be appreciated.
I found this on the bay : item # 140839631580 (Can't post link I'm too new... I was a lurker for a while -_-)
i didn't think the N7 could support power and OTG
You want it for video or audio? You could try a wifi solution for audio. Or be the guy that gets the pins to work.
there is NO data and charge at the same time. This is due to how the device switches from charge to usb mode thru the pin 4 . it senses rather a data cable or charge cable is being used . will not charge via otg..
there are several threads with experiments trying to get this work .You could use a wifi or bluethooth drive for data...
I have no clue what im doing but this is what im playing with at the moment. Its a old dock for sgs2 i believe but it has a dc and usb input on the back of it.
Im about to this because i have very little patience for china.
http://www.amazon.com/gp/product/B008CQKM2U/ref=ox_sc_act_title_1?ie=UTF8&smid=A24Y22QERZZ9SS
Would get the cheaper one but the juiced one has a flexible cable vs the fixed usb on the other one. Would this be pointless though?
Unfortunately OTG sends ground up the sense pin to trigger host mode. Once activated it sends 5V DOWN the USB cable to power your USB devices. Trying to send voltage up the cable at the same time to the Nexus would not be a good idea. The only way around it I can think of would be to hack the firmware to only activate the data pins in host mode and keep the power circuit seperate, then you could power the USB device from a modified dock/hub which sends power up the USB cable to the device.
A lot of work, and without the powered hub, OTG would be useless!
In the long run wouldn't it be easier to just plug in the power lead when needed and have the otg in the rest of the time? (or vice versa). It would mean you having to have easy access to the usb port but I can't see an easy non technical solution to connecting both at once.
Don't use the Nexus 7 for a car install. You can get an Acer Iconia A100 with a full-size USB port to connect to whatever external storage solution you want, and it's usually about the same price or cheaper than the Nexus 7.
earlyberd said:
Don't use the Nexus 7 for a car install. You can get an Acer Iconia A100 with a full-size USB port to connect to whatever external storage solution you want, and it's usually about the same price or cheaper than the Nexus 7.
Click to expand...
Click to collapse
Trying to sell tablet now. Going for galaxy tab 2
Sent from my SAMSUNG-SGH-I747 using xda premium
Wouldn't this work?
http://tobuygoods.com/product_info.php?language=en¤cy=USD&products_id=131
I have galaxy tab 2 for sale. Pm me for details...
erica_renee said:
there is NO data and charge at the same time. This is due to how the device switches from charge to usb mode thru the pin 4 . it senses rather a data cable or charge cable is being used . will not charge via otg..
there are several threads with experiments trying to get this work .You could use a wifi or bluethooth drive for data...
Click to expand...
Click to collapse
Would it be possible to charge while using an OTG Cable for Keyboard/Mouse or does the same principle apply as inn data via OTG & charge?
Roland
Sent from my Nexus 7 using Tapatalk 2
Rolandh said:
Would it be possible to charge while using an OTG Cable for Keyboard/Mouse or does the same principle apply as inn data via OTG & charge?
Roland
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Same principle. In normal OTG host mode the tablet powers the peripherals. A USB keyboard/mouse will be no exception to that.
intruda119 said:
I have no clue what im doing but this is what im playing with at the moment. Its a old dock for sgs2 i believe but it has a dc and usb input on the back of it.
Im about to this because i have very little patience for china.
http://www.amazon.com/gp/product/B008CQKM2U/ref=ox_sc_act_title_1?ie=UTF8&smid=A24Y22QERZZ9SS
Would get the cheaper one but the juiced one has a flexible cable vs the fixed usb on the other one. Would this be pointless though?
Click to expand...
Click to collapse
Sorry to resurrect an old thread but was wondering if you ever ended up getting that Juiced systems adapter and if it worked well with the N7. Been looking at it but haven't found any success stories on XDA with the N7, just the few Amazon reviews...
That cable would work but u need specific kernel tweaks for otg + charge to work. Pm me if anyone needs it.
Sent from my Nexus 7 using xda app-developers app
sadde said:
That cable would work but u need specific kernel tweaks for otg + charge to work. Pm me if anyone needs it.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Why PM you, why not just put it up here, Anyway here you guys go
http://forum.xda-developers.com/showthread.php?t=1835720
I am interested in this kernel patch quite a bit. I have a galaxy note 2 (sprint version). What are the odds someone has figured out how to get power and otg working on the note 2?
erica_renee said:
there is NO data and charge at the same time. This is due to how the device switches from charge to usb mode thru the pin 4 . it senses rather a data cable or charge cable is being used . will not charge via otg..
there are several threads with experiments trying to get this work .You could use a wifi or bluethooth drive for data...
Click to expand...
Click to collapse
Ofcourse there is charge and otg at the same time by just simply shorting pins 4 and 5 with a resistor,in my case for xperia p , a 100k resistor does it.
Timurs USB ROM from another site is what you want. Has links and everything you need.
I was going to do a car install as well but after sourceing parts and work estimates ( I want clean install, like stock) just more hassle than its worth for me. Please post pics if you get an install going.
Sent from my Nexus 7 using XDA Premium HD app
Found this on amazon for the Vivo tab, which uses the same 36-pin connector as the TF701. So I bought it for $20US hoping it would work with the 701 and it does! Plugged in the OTG adapter and attached my sandisk extreme usb 3 thumbdrive. Used the included SD/uSD card adapter to connect a couple SD cards and had no problems. Didn't do any speed tests or anything, just wanted to make sure they worked, and they did.
ASUS Extension Kit for VivoTab-Series Tablets
Aaroneious said:
Found this on amazon for the Vivo tab, which uses the same 36-pin connector as the TF701. So I bought it for $20US hoping it would work with the 701 and it does! Plugged in the OTG adapter and attached my sandisk extreme usb 3 thumbdrive. Used the included SD/uSD card adapter to connect a couple SD cards and had no problems. Didn't do any speed tests or anything, just wanted to make sure they worked, and they did.
ASUS Extension Kit for VivoTab-Series Tablets
Click to expand...
Click to collapse
Wow... Great find!
Hey - happen to have a PS3 controller you could test with? Almost bought the dock purely for this purpose, so I'm dying to know if plugging a controller in through USB would work...
If this really is fully supported by the tf701t, I'm seriously questioning why they didn't say so?
Sent from my K00C using Tapatalk
Trevor_g said:
Wow... Great find!
Hey - happen to have a PS3 controller you could test with? Almost bought the dock purely for this purpose, so I'm dying to know if plugging a controller in through USB would work...
If this really is fully supported by the tf701t, I'm seriously questioning why they didn't say so?
Sent from my K00C using Tapatalk
Click to expand...
Click to collapse
Sorry, no, I don't have a PS3 controller.
Aaroneious said:
Sorry, no, I don't have a PS3 controller.
Click to expand...
Click to collapse
No problem. There is another way to find out. Do you have a USB mouse and/or keyboard handy? If you wouldn't mind testing these basic peripherals, we could really verify if this thing provides host mode for more than disk drives.
If so, I'm buying!
Sent from my K00C using Tapatalk
Trevor_g said:
No problem. There is another way to find out. Do you have a USB mouse and/or keyboard handy? If you wouldn't mind testing these basic peripherals, we could really verify if this thing provides host mode for more than disk drives.
If so, I'm buying!
Sent from my K00C using Tapatalk
Click to expand...
Click to collapse
Standard mouse and keyboard both work fine when plugged into the OTG adapter.
Shocking. Why in the world would Asus not bother marketing this toward the TF community too?!
Glad you found this. Thanks for sharing and testing... Off to buy!
Sent from my K00C using Tapatalk
In 4 one. 9 left in stock. Now all I need is an extra usb cable. Can anyone point me to one?
Sent from my SCH-I545 using Tapatalk
guho said:
In 4 one. 9 left in stock. Now all I need is an extra usb cable. Can anyone point me to one?
Sent from my SCH-I545 using Tapatalk
Click to expand...
Click to collapse
Yeah I just want the extra cable - assume any vivo tab one works?
OTG USB adapter
I have ordered one too. Thanks for the link. :cyclops:
OTG USB Adapter
That's good idea, but unfortunately I can't buy this thing. There are blutooth usb-hub, for example _ttp://usb.brando.com/prod_detail.php?prod_id=00142
Will it work?
can someone find me the right product on the german amazon site? or uk?
i cant find
Can you charge and use USB with this?
Nice
Finaly, i recieved my OTG USB adapter today, and it works perfectly.
Thanks for the link.
or you can just buy the one meant for the transformer and it's a few dollars cheaper if you can't get the other one. Just doesn't come with the SD card adapter. This is the one that I intend to buy once I get my tablet
evodev said:
or you can just buy the one meant for the transformer and it's a few dollars cheaper if you can't get the other one. Just doesn't come with the SD card adapter. This is the one that I intend to buy once I get my tablet
Click to expand...
Click to collapse
Warning: This will not work with our TF701!!!!!! Read the Q&A below the product description !!
should the one for the tf700t also work?
The adapters mentioned that work with the 701 are all usb-2.
Does anyone know of a usb-3 adapter that will work?
matthelm said:
Can you charge and use USB with this?
Click to expand...
Click to collapse
I'm considering getting a TF701T, does anyone know if you could use this to charge the device? It'd be nice to know I have a backup if the proprietary USB cable fails.
nop- said:
I'm considering getting a TF701T, does anyone know if you could use this to charge the device? It'd be nice to know I have a backup if the proprietary USB cable fails.
Click to expand...
Click to collapse
Also can you simultaneously power the device and provide input using a usb hub(plug in keyboard and mouse for example)?
I went to the computer store. Bought the following:
The adapter which is 2.0 by the way.
USB 3.0 HUB with Power Adaper.
A male to A male cable.
While connected to a the HUB, and while the device is on its says "NOT CHARGING". I turn it off(tablet), Not getting a charge while connected to a the hub. It also drained it while the tablet is off. Nevermind the hub for power.
NO CHARGE FROM HUB
While connected to the PC it drained the power down to 6% then went back up to 50%. Not sure about that because it seemed to charge while it was off.
NO CHARGE FROM PC
As for the power adapter that comes with the tablet to it. Not charging while ON. Turn it off and no charge.
NO CHARGE FROM ASUS POWER ADAPTER
SO no it doesnt charge in any practical sense from this VIVO adapter as far as i can tell. Maybe its the MALE to MALE cable. I dont know. But its not worth trying if there a chance of drain killing it.
Unfortunately from the adapter there is no media connection or usb debugging to pc or usb hub afiak.
NO MEDIA CONNECTION OR USB DEBUGGING
The good news is that the device can connect to the USB HUB and the keyboard , mouse and thumb drive work flawlessly together.