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[Q] HP Touchpad OTG support?

So simple question, does anyone know (have tasted) if Touchpad supports OTG like for example Galaxy S2?
I bought these from DX: http://www.dealextreme.com/p/micro-usb-on-the-go-host-otg-adapter-pair-50774 and is working great with my Galaxy S2, but can it be used for Touchpad?

First, it is TESTED.
Second, Nope no native support yet, might have to wait till android port is complete, might take a couple of months.

[Q] USB OTG?
That's pretty cool, keep up the work.
Does anyone have ubuntu chrooted to check if the usb module is reporting anything?
kinda pre emptively ordered one in hope.
http://www.ebay.co.uk/itm/New-Micro-USB-Male-USB-Female-Data-Cable-Adapter-/280715545728?

Apparemtly there is built-in OTG USB support using a powered hub or Y cable, and an OTG mini-male to regular female USB adapter, according to rootzwiki.com/showthread.php?4332-Functional-USB-Host-on-Touchpad

Bill2 said:
Apparemtly there is built-in OTG USB support using a powered hub or Y cable, and an OTG mini-male to regular female USB adapter, according to rootzwiki.com/showthread.php?4332-Functional-USB-Host-on-Touchpad
Click to expand...
Click to collapse
One of those newbs who can't post links eh? I'll fix that...
http://rootzwiki.com/showthread.php?4332-Functional-USB-Host-on-Touchpad
The Touchpad doesn't have a powered port is the only problem - so provide power to whatever device and you're good to go.

what about a external HDD with its own powe supply, will it work..
unfortunately, i'm still waiting for my TP so cant test

Does it work with your HD2?
If so, there is no reason not to work with TP
(Hint: HD2 has same kind of usb host capabilities that needs external power supply)

So was it ever established whether or not USB OTG works on the Touchpad? Sorry to necro-post, but I picked up a touchpad during the firesale, have been loving it with first WebOS then CM9, and since I ordered a USB OTG adapter for my GSIII (this friday!) I was curious if there was anything I needed to know about using OTG with the HPTP.

It just works with a powered adapter. Nothing more to it then that. I've plugged almost everything into mine!
Sent from my SAMSUNG-SGH-T989 using xda premium

This thread has pictures links etc of the cable setup I'm using on cm9 with the TOUCHPAD
http://forum.xda-developers.com/showthread.php?t=1934380
[Tips and Tricks] OTG (USB Host Support) - Requires kernel support
Here's a cool mod at sdx that I plan to do for TP powered OTG courtesy of ften ...
http://forum.sdx-developers.com/index.php?topic=19916.0
Self Powered USB Host on the HP Touchpad!
Sent from my "Up all night, sleep all day" HP CM9 Touchpad

Thanks for the links, will see if I can get the needed cables etc from eBay/Amazon

Thanks for the help. My OTG cable and other things from Monoprice should've come yesterday, so hopefully I'll have them tomorrow. By powered adapter, do you mean something like a powered USB hub? Although I didn't get that OTG cable for the touchpad, it'd be a nice treat to be able to use it with that, it would definitely make moving movies around a lot easier.
EDIT (10/19): Dangit, they didn't come today. I'll have to see what's up, because they've been in my area for a while according to tracking just not coming.

Yes, u will have to use either a powered USB hub or get power from a USB charger that doesn't have the data +/- pins shorted internally (purchased or modified). If u plug device (ie phone) into charger and it says "ac charging" that means the data pins are shorted.
Sent from my "Up all night, Sleep all day" EVO3D!

mpgrimm2 said:
This thread has pictures links etc of the cable setup I'm using on cm9 with the TOUCHPAD
http://forum.xda-developers.com/showthread.php?t=1934380
[Tips and Tricks] OTG (USB Host Support) - Requires kernel support
Here's a cool mod at sdx that I plan to do for TP powered OTG courtesy of ften ...
http://forum.sdx-developers.com/index.php?topic=19916.0
Self Powered USB Host on the HP Touchpad!
Sent from my "Up all night, sleep all day" HP CM9 Touchpad
Click to expand...
Click to collapse
hi:
thread speaks of wiring directly the 5v stepup to the existing microusb port w/ diode..this would be great to see.
i am notsmart but w/ detailed instructions AND pics and supplies links, i would consider trying it.

mpgrimm2 said:
Yes, u will have to use either a powered USB hub or get power from a USB charger that doesn't have the data +/- pins shorted internally (purchased or modified). If u plug device (ie phone) into charger and it says "ac charging" that means the data pins are shorted.
Sent from my "Up all night, Sleep all day" EVO3D!
Click to expand...
Click to collapse
Alright, thanks. I think I need to get a powered hub for my laptop (which I am currently using as a desktop with external monitor and keyboard) so I there may be a happy coincidence here.
Also, just checked on my touchpad, and the HP charger says charging (AC) as well as my phone charger, which I think started life destined for some Blackberry.
The powered hub should work though, and that would make a great machine for typing and working in bed as opposed to my laptop burning my thighs off.

feteru said:
Alright, thanks. I think I need to get a powered hub for my laptop (which I am currently using as a desktop with external monitor and keyboard) so I there may be a happy coincidence here.
Also, just checked on my touchpad, and the HP charger says charging (AC) as well as my phone charger, which I think started life destined for some Blackberry.
The powered hub should work though, and that would make a great machine for typing and working in bed as opposed to my laptop burning my thighs off.
Click to expand...
Click to collapse
I just verified that if you get the Micro USB Host OTG Cable With USB power ($6 from AppleCable on Ebay) that Ramjet73 mentioned (or this one), it will work with any standard USB charger (ie the 1 Amp HTC or 2 Amp HP Touchpad Charger) because the USB Power Connector is Isolated. I also picked up Applecable's USB 2.0 3 Port Hub with data Sync Charger cable for $7 (I may try to modify it to be a USB OTG powered hub with this).
I will be updating the OTG thread I mentioned earlier. See attached:

I've never successfully used OTG. I've bought 2 cables.

michaelgcarro said:
I've never successfully used OTG. I've bought 2 cables.
Click to expand...
Click to collapse
I've received a bad one before. Cut it open to verify the id pin hadn't been tied to ground like it was supposed to be. I can verify that OTG is enabled with the CM9 Nightly and jcsullin's latest Cm10.
Sent from my "Up all night, sleep all day" HP CM10 Touchpad

[Q] How to enable UMS/Mass storage mode??

Yesterday I made a custom usb Y cable and connected it to a USB OTG adapter to our phone and supplied a external +5v power then connected USB keyboard and mouse both worked.
But when i tried connecting my pen drive it did not shown any sign of life.
I searched and narrowed these methods:
http://www.chinadigitalcomm.com/how-to-mount-usb-flash-drives-t1865.html
http://forum.xda-developers.com/showthread.php?t=1334444
http://forum.xda-developers.com/showthread.php?t=997187
According to these two methods I should get sda1 and sda 2 in dev/block after connecting a USB pen drive but that is not happening.
Then I searched and found out that our kernel should have UMS enabled to mount any usb storage device as stated here:
http://forum.xda-developers.com/showpost.php?p=22597744&postcount=3
I am really confused now, I know I have enabled USB Host mode as usb mouse and keyboard are working but dont know how to modify our kernel to get usb pen drive work.

prasannapmv said:
Yesterday I made a custom usb Y cable and connected it to a USB OTG adapter to our phone and supplied a external +5v power then connected USB keyboard and mouse both worked.
But when i tried connecting my pen drive it did not shown any sign of life.
I searched and narrowed these methods:
http://www.chinadigitalcomm.com/how-to-mount-usb-flash-drives-t1865.html
http://forum.xda-developers.com/showthread.php?t=1334444
http://forum.xda-developers.com/showthread.php?t=997187
According to these two methods I should get sda1 and sda 2 in dev/block after connecting a USB pen drive but that is not happening.
Then I searched and found out that our kernel should have UMS enabled to mount any usb storage device as stated here:
http://forum.xda-developers.com/showpost.php?p=22597744&postcount=3
I am really confused now, I know I have enabled USB Host mode as usb mouse and keyboard are working but dont know how to modify our kernel to get usb pen drive work.
Click to expand...
Click to collapse
you won't be able to modify our kernel with our locked bootloader, but your problem could be elsewhere. the drive requires more power than a mouse or keyboard, so it just may not be getting enough. will your power supply give a full 500mA that is what a normal usb port gives, and is probably overkill for a flash drive, but it would prove whether that is the problem or not.
Does the drive have a light on it that usually turns on when you plug it in? if so, does it come on when you plug it in with your splitter into the phone.
It may be that it is just not supported on our phone, but I think a power problem is much more likely.
EDIT: once you think it is getting power, check for it in /dev/block by running this in terminal emulator. you can check before and after to see what changes, if anything in case it is not named /sdxx
Code:
ls /dev/block

lkrasner said:
you won't be able to modify our kernel with our locked bootloader, but your problem could be elsewhere. the drive requires more power than a mouse or keyboard, so it just may not be getting enough. will your power supply give a full 500mA that is what a normal usb port gives, and is probably overkill for a flash drive, but it would prove whether that is the problem or not.
Does the drive have a light on it that usually turns on when you plug it in? if so, does it come on when you plug it in with your splitter into the phone.
It may be that it is just not supported on our phone, but I think a power problem is much more likely.
EDIT: once you think it is getting power, check for it in /dev/block by running this in terminal emulator. you can check before and after to see what changes, if anything in case it is not named /sdxx
Code:
ls /dev/block
Click to expand...
Click to collapse
That is right, our phone does not provide power on the usb connection, it is a one way charge only, no matter which cable you use, it is an issue with moto's implementation of the USB protocol.
---EDIT---
I do think that I read that someone was able to get it working by using a powered usb hub attached in between the A2 and the usb device. WARNING some assembly/dis-assembly was required!

jimbridgman said:
That is right, our phone does not provide power on the usb connection, it is a one way charge only, no matter which cable you use, it is an issue with moto's implementation of the USB protocol.
Click to expand...
Click to collapse
devices do work as long as you provide external power, which is what he has done. basically you cut the power wires out of the cable and hook them up to a power supply, thus givng the power and giving the data to the phone. Since it supports host mode, it SHOULD work with a flash drive as well as mice, I have heard of people doing it.

lkrasner said:
devices do work as long as you provide external power, which is what he has done. basically you cut the power wires out of the cable and hook them up to a power supply, thus givng the power and giving the data to the phone. Since it supports host mode, it SHOULD work with a flash drive as well as mice, I have heard of people doing it.
Click to expand...
Click to collapse
I know this does not explain it, but it is mentioned that a powered hub is needed.... This person was thinking of making basically a DIY HD doc, and there was someone else on here that has done it too, but I can't find that post and I can't remember the users name.
http://forum.xda-developers.com/showthread.php?t=1462541
A cheap hub will do the job much better, and I have heard of other users having trouble with the otg cable and usb storage.
Just more information to think about and look into.

Try this
https://play.google.com/store/apps/details?id=eu.chainfire.stickmount&hl=en
Motorola lied and I'm still locked mb865

I've tried every single thing that I can to make Usb flash drive work but its something in our software that is restricting it detect any of my storage devices.
I saw one more thread yesterday it was for XOOM which says kernel has to be modified in order to get usb Drives work:
http://forum.xda-developers.com/showthread.php?t=1068999
I now understand that with locked bootloader it will not be possible to modify the kernel so i am abandoning this project and hope we find a way to unlock bootloader soon in the future.

You can try by using a self powered hub which provide power to devices, If it works do post the results as I am also looking forward to use USB HOST feature

john1989 said:
You can try by using a self powered hub which provide power to devices, If it works do post the results as I am also looking forward to use USB HOST feature
Click to expand...
Click to collapse
Ive done this. I have a powerd usb hub, otg cable hooked up and it does not recognize drives or mice. None of it is working. Beginning to think there is not a way to make this work.

It does work when you connect pen drive to lapdock so its not software/firmware/kernel issue.
Easy solution: buy a lapdock or a media dock with usb ports and connect your drive there.
Sent from my MB865 using Tapatalk 2

I did finally get this to work.
One caveat, you have to connect the power directly from the cable to the otg cable. Basically power the hub and the otg cable from one line even though they are connected. This is what did the trick for me.
Ill post pictures when i can if its still foggy.
Sent from my MB865 using xda premium

Rebelj12a said:
I did finally get this to work.
One caveat, you have to connect the power directly from the cable to the otg cable. Basically power the hub and the otg cable from one line even though they are connected. This is what did the trick for me.
Ill post pictures when i can if its still foggy.
Sent from my MB865 using xda premium
Click to expand...
Click to collapse
Update and edit. No automounting at all. Have to use an external program to mount. Been trying to debug this for a while but the OS is not seeing the usb device.
Using USB host diagnostics Android api does not detect the device. Although the claims and classes were found. Kernel is in the green here too. Unfortunitely this makes it so that the USB device cannot be used by 3rd party programs. Still working on figuring this out. I saw a post about shorting out the 4 and 5 line of the microusb cable. Going to try that see where it goes.

Sabrent 7-PORT USB 2.0 HUB WITH AC POWER ADAPTER. Will it work with OTG in ICS?

Hello,
I think I found a cheaper alternative to Lapdock, but IDK if and how this can work or not.
I found something with external power here and I'm wondering if we can attach a mouse/keyboard with it.
Thanks in advanced,
TCF38012

tcf38012 said:
Hello,
I think I found a cheaper alternative to Lapdock, but IDK if and how this can work or not.
I found something with external power here and I'm wondering if we can attach a mouse/keyboard with it.
Thanks in advanced,
TCF38012
Click to expand...
Click to collapse
It should work as long as you have an OTG adapter or cable that shorts pins 4 (the ID pin) and 5 (ground) that would then connect to the powered hub. These can be bought pretty cheap or just make one with a spare cable. The phone needs to know it is in USB host mode (shorted ID to ground) and there needs to be external power for the peripheral devices.
I just recently bought this , this, and this. The hub has two usb's: one for the phone, which has the otg cable, and the other for power (which I connected with the extension cable). You can then use your regular usb wall charger. Everything works great (attach any usb device you like) and when you attach a micro HDMI to regular HDMI cable to a TV/Monitor, you got yourself a computer like setup. I haven't tried it, but I think you can even attach external storage to it as well.

When did otg start working with atrix 2

shanghei said:
When did otg start working with atrix 2
Click to expand...
Click to collapse
Since ICS

tcf38012 said:
Since ICS
Click to expand...
Click to collapse
Actually, I used it on stock 2.3.6. As far as I know, that's more or less all that the the laptop docks are (with some added signal to know to use webtop when connected).

[Q] usb otg cable doesn`t work

I had my 7.7 for some time and about 2 days ago i've bought a cheap chinese usb otg cable from some shoup around here. I thought it would be as simple as pluging it in and connecting some usb stick like i've done with justabout all usb otg stuff i previously owned. But it doesn`t do anything. I`ve tried other usb devices, the tab simply doesn`t power them at all. I`ve also disasembled the cable and measure it, everything is fine. I`m on stock ics 4.04, also tried a couple of kernels, it just doesn`t work.
Has anyone encountered such a problem.? Damn weird....

motoi_bogdan said:
I had my 7.7 for some time and about 2 days ago i've bought a cheap chinese usb otg cable from some shoup around here. I thought it would be as simple as pluging it in and connecting some usb stick like i've done with justabout all usb otg stuff i previously owned. But it doesn`t do anything. I`ve tried other usb devices, the tab simply doesn`t power them at all. I`ve also disasembled the cable and measure it, everything is fine. I`m on stock ics 4.04, also tried a couple of kernels, it just doesn`t work.
Has anyone encountered such a problem.? Damn weird....
Click to expand...
Click to collapse
I have an original cable but also bought an after market one that verizon had made available for their version of the 7.7
I bought it here:
http://www.wirelessground.com/samsung-galaxy-tab-wall-charger-verizon.html
Excelllent service and price. Works great and quality build
---------- Post added at 11:32 PM ---------- Previous post was at 11:24 PM ----------
whitehawk66 said:
I have an original cable but also bought an after market one that verizon had made available for their version of the 7.7
I bought it here:
http://www.wirelessground.com/samsung-galaxy-tab-wall-charger-verizon.html
Excelllent service and price. Works great and quality build
Click to expand...
Click to collapse
!
errrr....I think I misread your issue and specific item...
sorry!
Still great though!

The usb otg cable is just a plain simple usb cable with a 20kilo ohm resistor placed between 2 pins on the galaxy tab 30pin connector. That's about all the things inside the actual cable. When you plug it in, the tablet should figure out that the 20k resistor made contact with the pins and an accesory was connected. Mine doesn't. The cable is fine, i think there's something wrong with the tablet. Doesn't it supossed to power on whatever you insert on that usb port? Because i can't get those 5v on the port.
I don't know if it's a software or hardware problem....

motoi_bogdan said:
The usb otg cable is just a plain simple usb cable with a 20kilo ohm resistor placed between 2 pins on the galaxy tab 30pin connector. That's about all the things inside the actual cable. When you plug it in, the tablet should figure out that the 20k resistor made contact with the pins and an accesory was connected. Mine doesn't. The cable is fine, i think there's something wrong with the tablet. Doesn't it supossed to power on whatever you insert on that usb port? Because i can't get those 5v on the port.
I don't know if it's a software or hardware problem....
Click to expand...
Click to collapse
what file system is your USB Stick using? try formatting the stick to FAT32 and see if its a file system issue

have you tried using another OTG cable? I'm also using a china knock off bought for 4 bucks, running stock ICS and it detects most of the thumb drives I attached to it

thanks for the replies but the situation is kind of different in my case.
In order for the tablet to read what kind of filesystem you have on a usb mass storage device (stick, hdd, whatever) it must first power it on and then attempt to access it. In my case, it simply doesn't power on. So, it doesn't matter what kind of file format it has. Also, if i plug a mouse/keyboard, it won't work either.
I thought that maybe it's a broken wire inside the connector, so i took it apart and measured each pin. The otg adapter is fine, it should do the job. I've also tested on another samsung tab and it worked straight away. It seems there's something wrong with my tab. However, other then this, the 30 pin port on the tab itself seems to be working fine.

Connecting a retired S4 to a TV, as a media player

I have an old Samsung Galaxy S4, with a wonky battery. Can I use a micro USB splitter, to provide power to it through one socket, while using the other socket to connect and simultaneously run 1) a wireless keyboard/trackpad hybrid, 2) a USB 2.0 external drive (with its own power supply), and 3) a USB to HDMI converter to connect it to a TV? It's rooted, so I'll happily uninstall everything but the bare essentials on it, to free up memory.
Any help or direction to the proper thread would be much appreciated.

jadiknight said:
I have an old Samsung Galaxy S4, with a wonky battery. Can I use a micro USB splitter, to provide power to it through one socket, while using the other socket to connect and simultaneously run 1) a wireless keyboard/trackpad hybrid, 2) a USB 2.0 external drive (with its own power supply), and 3) a USB to HDMI converter to connect it to a TV? It's rooted, so I'll happily uninstall everything but the bare essentials on it, to free up memory.
Any help or direction to the proper thread would be much appreciated.
Click to expand...
Click to collapse
What you are looking for is a powered USB hub, find one with micro USB connector or get a MicroUSB to USB adapter to connect the hub to the phone then a USB to HDMI adapter. I'm not sure if you'll need any additional software to set it all up or not.
There are many different options available.
Sent from my SCH-I535 using Tapatalk

Droidriven said:
What you are looking for is a powered USB hub, find one with micro USB connector or get a MicroUSB to USB adapter to connect the hub to the phone then a USB to HDMI adapter. I'm not sure if you'll need any additional software to set it all up or not.
There are many different options available.
Sent from my SCH-I535 using Tapatalk
Click to expand...
Click to collapse
1. I very much appreciate your feedback, but it seems a lot of the "powered" hubs don't charge at the same time as allowing data to flow out, so to speak. Can you suggest a model that will provide power and allow data, simultaneously? (I tried to post a couple of Amazon example links, but apparently I'm not allowed to post external links as a newbie)
2. Assuming I find the powered model, will the S4 be able to handle all of the connections I outlined?
Thanks again!

jadiknight said:
1. I very much appreciate your feedback, but it seems a lot of the "powered" hubs don't charge at the same time as allowing data to flow out, so to speak. Can you suggest a model that will provide power and allow data, simultaneously? (I tried to post a couple of Amazon example links, but apparently I'm not allowed to post external links as a newbie)
2. Assuming I find the powered model, will the S4 be able to handle all of the connections I outlined?
Thanks again!
Click to expand...
Click to collapse
Try these links and see what you can come up with, it's gonna be tricky but you'll probably have to make modifications.
electronics.stackexchange.com/quest...-host-and-be-charged-simultaneously-through-a
forum.xda-developers.com/showthread.php?t=2303902
forums.androidcentral.com/samsung-g...80-otg-cable-supports-charging-same-time.html
I'm not sure if any of that will work for you. You can also try doing a Google search for:
"How to USB host and charge on android"
I found several links with that search.
Sent from my SCH-I535 using Tapatalk