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Cannot get Nook Color to charge while in USB host

Alright so i bought a usb powered hub, a usb OTG cable, and a usb DAC. I can get the usb DAC working fine by hooking everything up but i cannot get the Nook to charge while in USB host mode. Is this a problem with the settings on the Nook or the USB hub i bought? Also is there any way to charge the nook at 2A while in USB host? I assume this would require a custom cable but i have found very limited information on the internet.

desitdt said:
Alright so i bought a usb powered hub, a usb OTG cable, and a usb DAC. I can get the usb DAC working fine by hooking everything up but i cannot get the Nook to charge while in USB host mode. Is this a problem with the settings on the Nook or the USB hub i bought? Also is there any way to charge the nook at 2A while in USB host? I assume this would require a custom cable but i have found very limited information on the internet.
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I could be wrong or downright delusional, but I didn't think you could (or worse yet, could cause damage if you tried).
Sent from my Nexus 7 using xda premium

[Q] USB OTG: usb1 found, cannot use keyboard

Hello,
I have a USB OTG cable and dell keyboard that I have tested and work in OTG mode on a Nexus 7, however i cannot get them to function with my HP Touchpad 32gb, running CM9 2.6.35, built on Sun Oct 28.
The device recognizes when I plug in anything via USB, but only as a generic Linux USB hub, and not as any particular device. Are there any steps to take to debug this? Has anyone had experience with this type of an issue?
Thanks for your help,
Cory

I don't know if this is the issue, but I know the touchpad doesn't support OTG like the the Nexus does. I think you need a Y-adapter + OTG to provide power since the micro usb port doesn't give any power to the device you connect. Someone correct me if I'm wrong though.

Apparently even a powered USB requires a powered Y cable to be properly recognized. I hacked together a quick Y cable manually, by splicing in another USB cable's power and ground (Red and black) to the respective locations on a female USB cable. Works as expected.
I am now communicating with an Arduino over Serial
Thanks!

Read this thread, should give you all the info you need:
http://forum.xda-developers.com/showthread.php?t=1582771
Basically the Touchpad has OTG but it provides no power.

wcdolphin said:
Apparently even a powered USB requires a powered Y cable to be properly recognized. I hacked together a quick Y cable manually, by splicing in another USB cable's power and ground (Red and black) to the respective locations on a female USB cable. Works as expected.
I am now communicating with an Arduino over Serial
Thanks!
Click to expand...
Click to collapse
I'm curious if you are able to charge with this cable hack while using usb devices?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

ZedZardoz said:
I'm curious if you are able to charge with this cable hack while using usb devices?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
if so , he is the first of the many many many who has used this cable..HPTP just is not set up for charge + usb data at the same time

amkaos said:
if so , he is the first of the many many many who has used this cable..HPTP just is not set up for charge + usb data at the same time
Click to expand...
Click to collapse
Agreed. I think people just are not stating reality regarding the ability to charge and use OTG Hosting to USB devices at the same time.
My goal here has been to attach a flash drive with video/audio media and play & charge on long flights. It looks like play, charge are mutually exclusive on my beloved TouchPad.
I've asked for the specific confirmation of this from this YouTube but have never had the poster reply:
https://www.youtube.com/watch?v=p10LgZFIawo&feature=BFa&list=PLCED27D4A23068E04&index=7
There are devices out there that have very advanced micro USB device implementations. Sadly the HP is only superficially supportive.
I for one cannot wait to get my SGN2 smart dock which offers:
Charging
OTG (x3 USB)
Audio out
HML HDMI out
Docked Profile

[Q] OTG with USB hub instead of Y cable?

Hi friends,
I want to attach to my touchpad memory card reader and external hard drive.
I wonder if it will be possible instead of buying Y cable and connect it to the OTG, to use my existing USB hub and connect to him the devices and the external battery bank.
Will it work?
Thanks

avizov2 said:
Hi friends,
I want to attach to my touchpad memory card reader and external hard drive.
I wonder if it will be possible instead of buying Y cable and connect it to the OTG, to use my existing USB hub and connect to him the devices and the external battery bank.
Will it work?
Thanks
Click to expand...
Click to collapse
im assuming youre talking about doing this in android 4.0.x +. if so then yes you should be able to connect an externally powered usb hub to the OTG cable and connect more than one device at a time.

Thanks
haxin said:
im assuming youre talking about doing this in android 4.0.x +. if so then yes you should be able to connect an externally powered usb hub to the OTG cable and connect more than one device at a time.
Click to expand...
Click to collapse
Yes android 4.
to be precise, I don't have powered usb hub.
I have normal usb hub which I will connect him the power with usb battery bank device.
will it work?

avizov2 said:
Yes android 4.
to be precise, I don't have powered usb hub.
I have normal usb hub which I will connect him the power with usb battery bank device.
will it work?
Click to expand...
Click to collapse
Yes. You need to give power to the periphal usb devices. I tried the same yesterday, without problems.

Hey all
I have a powered Belkin USB hub (this one: http://www.belkin.com/us/F4U040-Belkin/p/P-F4U040), coupled with an OTG cable which I know work together, as my Kindle Fire recognizes all USB devices through this setup (Keyboard, Mouse, Flash Drive etc).
I was surprised to find that my HP touchpad does not recognize any devices connected to this hub.
I did some diagnostics with USB Device Utility, and the touchpad recognizes my USB OTG cable, as it shows as a 'Qualcomm On-Chip EHCI Host Controller'.
The touchpad simply does not see anything plugged into the hub, be it a keyboard, mouse or flash drive.
Please help me here, guys!
What am I doing wrong?
Thanks

MainCourse said:
Hey all
I have a powered Belkin USB hub (this one: http://www.belkin.com/us/F4U040-Belkin/p/P-F4U040), coupled with an OTG cable which I know work together, as my Kindle Fire recognizes all USB devices through this setup (Keyboard, Mouse, Flash Drive etc).
I was surprised to find that my HP touchpad does not recognize any devices connected to this hub.
I did some diagnostics with USB Device Utility, and the touchpad recognizes my USB OTG cable, as it shows as a 'Qualcomm On-Chip EHCI Host Controller'.
The touchpad simply does not see anything plugged into the hub, be it a keyboard, mouse or flash drive.
Please help me here, guys!
What am I doing wrong?
Thanks
Click to expand...
Click to collapse
Are you sure that's powered? The picture doesn't show any DC connectors. Is it powered by something like a mini USB to USB cable on the back? If so, that might not be enough to power the device and the peripherals attached to the ports.

Belkin Hub
Daistaar said:
Are you sure that's powered? The picture doesn't show any DC connectors. Is it powered by something like a mini USB to USB cable on the back? If so, that might not be enough to power the device and the peripherals attached to the ports.
Click to expand...
Click to collapse
The belkin does have an external dc power supply and is not powered via usb

I think you need a Y cable even with a powered hub as its purpose is to inject power back into the OTG chip in the Touchpad.

USB Port

Does the USB port have any other function other than power?

Don't think so, only power AFAIK.

I plugged it into my computer and even tried pressing and pressing/holding the button on the Chromecast but my computer didn't indicate any hardware plugged in.
I wonder if the data pins are even wired to anything internally.
UPDATE: The USB cable that comes with it may not work for data transfer, tried it with my phone and it didn't work. So I tried a normal microUSB cable but still nothing.

spunker88 said:
I plugged it into my computer and even tried pressing and pressing/holding the button on the Chromecast but my computer didn't indicate any hardware plugged in.
I wonder if the data pins are even wired to anything internally.
Click to expand...
Click to collapse
If we could plug a mouse or keyboard into it would be great!!

comatose1978 said:
If we could plug a mouse or keyboard into it would be great!!
Click to expand...
Click to collapse
It has bluetooth... so in theory that could be a simple alternative... we just need to figure out how to access hidden menus.

comatose1978 said:
If we could plug a mouse or keyboard into it would be great!!
Click to expand...
Click to collapse
I tried this with a self powered USB OTG cable, just to see if the Chromecast would blink, bing, or do anything to show recognition, no dice. Also tried booting with a USB drive in, no difference.

Universal Charger
Universal Charger:victory:

Examining board
Based on examining the photos of the motherboard on ifixit.com...
Component EM1 appears to be a USB Common Mode Choke. That goes on the D+/D- pair which you can see routed from the USB port, so it wouldn't be present if there wasn't some use for data communication over the USB port. (Cost sensitive equipment.) The flip side of the PCBA shows TP1-TP20 (Where TP19 and TP20 appear to be GND). My guess is in that mix you have a JTAG port for programming/testing the unit initially with a pogo pin rig (evidenced by the dimples observed in each of those locations), and there might be more high/low GPIO pins where one might allow the unit to enter its USB data mode.
-Jon

ften said:
I tried this with a self powered USB OTG cable, just to see if the Chromecast would blink, bing, or do anything to show recognition, no dice. Also tried booting with a USB drive in, no difference.
Click to expand...
Click to collapse
Is there any special kind of powered otg cable to work with this? I looked on Amazon but not sure. I want to grab one incase they make any progress on rooting this.
Sent from my HTCONE using Tapatalk 4 Beta

mustang_52 said:
Is there any special kind of powered otg cable to work with this? I looked on Amazon but not sure. I want to grab one incase they make any progress on rooting this.
Sent from my HTCONE using Tapatalk 4 Beta
Click to expand...
Click to collapse
Looks like its already been rooted. With what looks like a dual usb otg. They don't go deep into what specific cable but, I would guess it is a generic dual usb one off ebay, or amazon, heres a quick one i pulled from amazon http://www.amazon.com/Micro-Cable-P...8&qid=1375052489&sr=8-3&keywords=Dual+Usb+otg
But if you read into it, they say you can root, but unless your a developer you probably wont get any benefit of rooting....yet, if at all.
Obtaining root Link: http://blog.gtvhacker.com/2013/chromecast-exploiting-the-newest-device-by-google/

OneAn9ryN00b said:
Looks like its already been rooted. With what looks like a dual usb otg. They don't go deep into what specific cable but, I would guess it is a generic dual usb one off ebay, or amazon, heres a quick one i pulled from amazon http://www.amazon.com/Micro-Cable-P...8&qid=1375052489&sr=8-3&keywords=Dual+Usb+otg
But if you read into it, they say you can root, but unless your a developer you probably wont get any benefit of rooting....yet, if at all.
Obtaining root Link: http://blog.gtvhacker.com/2013/chromecast-exploiting-the-newest-device-by-google/
Click to expand...
Click to collapse
Please correct me if Im wrong, but the cable you linked only charges the thumbdrive/keyboard/mice/etc NOT the Chromecast so how would one root it since it does need power from usb plug? I've been searching for correct cable and cant find it; link to correct cable would be greatly appreciated!!!
This cable wouldnt work, right? http://www.ebay.com/itm/Usb-type-A-..._USB_Cables_Hubs_Adapters&hash=item4857e3608e

eurominican said:
Please correct me if Im wrong, but the cable you linked only charges the thumbdrive/keyboard/mice/etc NOT the Chromecast so how would one root it since it does need power from usb plug? I've been searching for correct cable and cant find it; link to correct cable would be greatly appreciated!!!
This cable wouldnt work, right? http://www.ebay.com/itm/Usb-type-A-..._USB_Cables_Hubs_Adapters&hash=item4857e3608e
Click to expand...
Click to collapse
I own that cable from Amazon and it should work. It brings in +5v from a charger connected to the female microUSB port and then splits it to the female full size USB port and the the male microUSB port so both the USB host device and the USB peripheral device are getting power.

spunker88 said:
I own that cable from Amazon and it should work. It brings in +5v from a charger connected to the female microUSB port and then splits it to the female full size USB port and the the male microUSB port so both the USB host device and the USB peripheral device are getting power.
Click to expand...
Click to collapse
I ordered this cable http://r.ebay.com/QgwBIW Will report back if it works when I get it.

eurominican said:
Please correct me if Im wrong, but the cable you linked only charges the thumbdrive/keyboard/mice/etc NOT the Chromecast so how would one root it since it does need power from usb plug? I've been searching for correct cable and cant find it; link to correct cable would be greatly appreciated!!!
Click to expand...
Click to collapse
I also bought that powered OTG cable off Amazon and it will power the Chromecast as well as provide the means to flash the Chromecast via a USB thumbdrive. When you apply power to the Chromecast, it automatically flashed the bin from the USB drive. There was no interaction required (or even possible). Of course this was on the original firmware - if your Chromecast updated itself, you have lost the ability to root the device at this time.
Clearly the Chromecast does sense the USB drive and pulls data from it during the initial boot sequence. However I'm not sure if it would ever work for other devices such as keyboards or storage devices, etc.
I'm not sure why anyone would want to hook those types of devices up to the Chromecast however. Once you have root, you can telnet into the device, so adding a keyboard doesn't seem that important. The whole idea of the device is that you send it media from other devices and control it via that other device. Adding storage for example doesn't seem important since it can pull media off the network already (ie a NAS or another computer).
Anyway. That has been my experience with it so far. It's a long winded answer to more than just your question about the OTG plug.

I would personally love the ability to send audio out without having an hdmi TV be on through the usb somehow...
Sent from my Nexus 7 using Tapatalk 4

USB Tethering not working - SGH-i997
Hi all,
i have install Avatar 7.0 to my Samsung SGH-i997 from "http://forum.xda-developers.com/showthread.php?t=2174227". it's look cool.
But when i am trying to USB Tethering, the massage shows as "Unfortunately,Setting has Stopped".
how to Fix this issue.

Cable for the nexus so i can power it while doing a timelapse.

i've been using chainfire's app to do some timelapses, and it's pretty awesome.
But is there a way i can charge the nexus 7, at the same time as i have it connected to the DSLR?
Like is there a cable or something?
-Skandix

I took a look at the app you're using and it appears you use a USB OTG in order to connect the camera to your Nexus. There is in fact a variation of the OTG which is an OTG y or OTG power adapter which as a leg for power and a leg for data. Here is the first result on Amazon so you can see what I'm talking about:
http://www.amazon.com/Micro-Cable-Power-Nexus-Galaxy/dp/B00CXAC1ZW
The only thing is that you need a Kernel which supports USB host while charging. Once you've got that and the cable, you should be able to continuously connect to the camera while maintaining full charge on your Nexus.