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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.
hey guys, anyone know how to connect our LG OB to a LCD tv with a HDMI adaptor or such????
Our OB not support HDMI....Sorry
Wanted it too
Some people say this is the optimus black, but it's 2x.
/watch?v=iwpozyKyacY
But if someone create any app, its impossible?
Enviado desde mi LG-P970 usando Tapatalk
sexation said:
But if someone create any app, its impossible?
Enviado desde mi LG-P970 usando Tapatalk
Click to expand...
Click to collapse
Create an app to do what ?
There is no HDMI port on the phone, the only solution i see is to use the USB port, but then you would also need some hardware that connects on the USB and reinterprets that data sent to it and export that on a HDMI port.
I for one haven't seen any such devices (USB-to-HDMI for phones).
verszipo said:
Create an app to do what ?
There is no HDMI port on the phone, the only solution i see is to use the USB port, but then you would also need some hardware that connects on the USB and reinterprets that data sent to it and export that on a HDMI port.
I for one haven't seen any such devices (USB-to-HDMI for phones).
Click to expand...
Click to collapse
It is called MHL adapter
It does exactly that- micro usb to HDMI and is being use in galaxy nexus and galaxy note etc
Unfortunately not the case for our blacky
So, finally end with smart share..USB mass storage only...
NO HDMI...:banghead:
Sent from my LG-P970 using Tapatalk
omap 3630
Hi,
I found this update driver and libs for our black ,and i think that we can use mhl cable ,
Just we have to waite for dev to update the kernel.
Link: http://git.omapzoom.org/?p=kernel/omap.git;a=shortlog;h=refs/heads/p-android-omap3-3.0
darkitoo said:
Hi,
I found this update driver and libs for our black ,and i think that we can use mhl cable ,
Just we have to waite for dev to update the kernel.
Link: http://git.omapzoom.org/?p=kernel/omap.git;a=shortlog;h=refs/heads/p-android-omap3-3.0
Click to expand...
Click to collapse
Cant tell you how much i hope you are wright and we get to use mhl
are you sure you cant use an micro usb-hdmi cable, parhaps with an app that interprates the signal and send it through usb
GerardoSDR said:
are you sure you cant use an micro usb-hdmi cable, parhaps with an app that interprates the signal and send it through usb
Click to expand...
Click to collapse
As said before it is nothing to do with an app. It has to be supported by the kernel. So far not possible for the black. Also possible issue is the output electricity. It needs to be 5v 500mA.
Technically speaking the OBs chipset supports usb-otg and hdmi .
Just matter of incorporating mhl in the kernel now or on ICS.
P.s. In an optimistic mood i bought the before mentioned adapter, and it has optional external power supply ( the phone charger or battery pack) .Waiting for it to come, and either there will be some change in near future or there will be new phone which supports mhl out of the box.
opti_black lacks HDMI connectivity..
thats sad but true .
It is not OB that lacks it.
The SOC can do it. It is LG that ain't interested in giving us the option.
i certainly wouldn't use it
i did not use it at all in my optimus 3D
As like the members say it certainly depends upon the taste of droidser.. some of them take its advantage while other rarely..
However its overall use by droidser is least.
Sent from my LG-P970 using xda app-developers app
So guys are you sure there is nothing to do in order to connect OB to TV by hdmi cable?
I just bought a LED TV a week ago and I want to connect the ob to it..
Afraid not a lot to be done. I have usb to hdmi adapter and it works fine with Galaxy Note , but as mentioned before not with the OB.
Following closely the development for the galaxy sl. They are still in a lock down and no luck.
But still hope is there.
ow about on screen phone??can use it for make an app for hdmi?
done some searching around for this too but no real solution. If you want to see your phone screen on the TV, connect it to you computer, use some remote screen software and connect the computer screen output to the TV
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
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.
Hopefully someone can help, my Xperia T seems not to have any USB OTG functionality. I've tried 2 different OTG cables and there is no response from the phone. Any ideas?
Otherwise USB appears to be working fine.
Many Thanks.
Which Rom, rooted, bootloader status?
These things help us help you.
Sent from my C6603 using xda premium
Rooted on stock 4.1.2. Bootloader is locked.
Do you have usbotg.apk installed?
Sent from my C6603 using xda premium
gregbradley said:
Do you have usbotg.apk installed?
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
Yes, version 1.
I tried plugging a Fat32 formatted stick in and it did actually recognise and start to prepare (to mount?) something, however it then said disconnected unexpectedly and is back to doing nothing.
edit: I've ordered a better quality otg cable, otherwise a I think it is the socket on the phone. (But surely that would effect the standard data cable also?)
I've used several usb devices with my phone. My experience is that some thumb drives draw troop much power. The phone should display a warning about this but it might well be this is the cause of your problem. You could try hooking it up to a powered usb hub, that should always work. I connected a thumb drive, mouse and keyboard simultaneously that way.
Sent from my LT30p using xda app-developers app
I just received a Nokia CA-157 cable, and a USB stick I tried previously just mounted without problems.
So I guess the moral of the story is buy one $2 adaptor instead of two $1.5 ones!
Thank You for any advice
i tried 2 otg cables with my xperia T
both cables were of nokia
it always shows a usb power consumption error and it gets disabled
does anyone know why ?
I believe the Xperia T will only give 300ma before complaining, most devices will ask for 500ma upon connection.
Use a powered usb hub to solve this.
A passive hub may also bypass the power check but I guess you risk drawing too much current from your phone.
Sent from my LT30p using Tapatalk 4 Beta
Try using different usb pen drive's....
Some bigger sized sticks will show error in power consumption.... So use pen drive which is smaller in size and consumes low power....
I have two pen drives , one connects perfectly and other will show error....
Sent from my LT30p using xda app-developers app
gregbradley said:
Which Rom, rooted, bootloader status?
These things help us help you.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
hi, do you have to root your phone before you can use the micro usb host to connect to mouse, hard drive and all that>??? i am confuse... i dont know whether i should buy a micro usb host or not.... and it seems that rooting a phone is very complicated so i dont wanna rack my phone...
SICANOOB said:
hi, do you have to root your phone before you can use the micro usb host to connect to mouse, hard drive and all that>??? i am confuse... i dont know whether i should buy a micro usb host or not.... and it seems that rooting a phone is very complicated so i dont wanna rack my phone...
Click to expand...
Click to collapse
No you dont need to be rooted, but we need to know the state of your phone before we can help you. Secondly, rooting the phone is VERY easy, it takes about 30 seconds and involves clicking about 2 buttons. Search for bin4ry root many android and read that thread.
gregbradley said:
No you dont need to be rooted, but we need to know the state of your phone before we can help you. Secondly, rooting the phone is VERY easy, it takes about 30 seconds and involves clicking about 2 buttons. Search for bin4ry root many android and read that thread.
Click to expand...
Click to collapse
is rooting that easy @[email protected],.. but i have xperia tx and i am still not quite sure whether it is the same as xperia t as shown in this forum... so i cant risk it.
also, for the usb otg thing... i am planning to buy a hard drive that says is usb 3.0 do you think a normal usb host cable and android phone can detect it?? all these technology stuff are so complicated....
btw thank you soooo much for helping me with that question... it has been annoying me for a lonnnnng time already..
SICANOOB said:
is rooting that easy @[email protected],.. but i have xperia tx and i am still not quite sure whether it is the same as xperia t as shown in this forum... so i cant risk it.
also, for the usb otg thing... i am planning to buy a hard drive that says is usb 3.0 do you think a normal usb host cable and android phone can detect it?? all these technology stuff are so complicated....
btw thank you soooo much for helping me with that question... it has been annoying me for a lonnnnng time already..
Click to expand...
Click to collapse
Yes, rooting is that easy.
TX and T are very similar, only a few differences.
I suspect that an external hard drive would need some other power supply than just what it can pull from the usb on a phone.
As has been said before, I have two pendrives, one works the other fails, so the limit of USB voltage is quite low.