[Q] The max capability of OTG - Nexus 5 Q&A, Help & Troubleshooting

Hi guys!
I am just curious how much devices could the nexus 5 handle through OTG.
I am thinking of connecting a slimport device to put the screen to monitor, and connecting a mouse and a keyboard.
Is the nexus 5 capable for that? Using an active usb hub (get it's power source from a wall adapter not from the phone) will charge the phone? Is it even possible to connect multiple devices to the phone through an USB hub?

Related

[Q] Re: Nexus S usb host is not working

http://support.google.com/ics/nexus/bin/answer.py?hl=en&answer=2386439&topic=2375623&ctx=topic
According to the official Google Help Page, it should support USB Host. However searching online have returned a lot of out-dated threads about how the USB chip works when it was still running Gingerbread.
I have purchased a USB adapter, tried to connect any USB device to my Nexus S, and nothing happens. The USB port will not be powered. However quoting Google's official help text :
You may need an adapter to connect the keyboard or other device to your phone's USB port. To connect more than one USB device at a time, use a powered USB hub to reduce the drain on your phone’s battery.
This implies that connecting devices to your Nexus S will drain your battery?
I am very confused. I have no powered USB hubs so I cannot try to see if the USB host function is purely limited by the lack of power or the USB chip.
I am sure I am not the only person who would love this to work. Is there anyone who knows what does it take to get USB Host to work on Nexus S upgraded to ICS? (Despite Google's help site indicating that it should just works out of the box)
Thanks a lot.
So, I spent some money and bought a powered USB hub.
No it didn't work.
I think the reason is that the power is not being transferred UPSTREAM. For example, I have connected the USB hub to my Nexus S, and a Logitech wireless mouse receiver to the powered USB hub.
Although I am sure that the Logitech wireless mouse receiver has power (from the USB hub), the Nexus S does not recognize the existence of the USB hub, since the power is not transmitted from the USB hub back INTO the Nexus S.
Feeling disappointed, I repacked everything nicely and exchanged my purchase for a slightly more useful 16GB SD Card.
Does anyone has any information to how is this supposed to work?
Or should we assume Google has made a stupid typo in their help articles, and that the Nexus S will not actually work in USB Host Mode ??
anyone please?
I too am looking for answers. Anyone?
Sent from my Nexus S using Tapatalk

[Q] Wireless charging and otg at the same time question

Canyou charge the galaxy s3 wirelessly and use otg at the same time? Do you think this would be possible on the nexus 4?
Has anyone tried this?
Aluzeros said:
Can you charge the galaxy s3 wirelessly and use otg at the same time? Has anyone tried this? Do you think this would be possible on the nexus 4?
Click to expand...
Click to collapse
Has anyone tried this?
I would also like to know if this is possible! (on any device)
Galaxy SIII OTG + chariging = NO
I've tried this recently because I needed to know myself.
It is NOT possible to do USB OTG and wireless charging at the same time. Wireless charging simply disables the USB port. And when something is connected to the USB port wireless charging is ignored. Even when only a OTG cable is connected (no mouse or USB stick) wireless charging is not possible.
Sad but true
Edit:
The same applies for the Galaxy Nexus phone with it's pogo-pins for charging. One excludes the other.
The only device that I've found and tested to be capable of USB OTG and charging at the same time is the Nexus 7. (charging trough dock, pogo-pins).
Another way to accomplish USB OTG + charging is to use a edited kernel.. About to try this on de Galaxy Nexus.

[Q] Usb hub + charging + hdmi possible?

Hi I can't find a definitive answer but I think it is no. Anyway does anyone know if it possible to do the following?
Get TV out (HDMI) + usb host working at same time
Get usb host (hub or not) + charging the tablet
Get hdmi out + usb host + charging.
I think our tab works with the media dock for the 7" tab but can usb host be added as well? The dock for the note 2 looks amazing and should really be available for all devices like this.
Cheers
badasschris said:
Get TV out (HDMI) + usb host working at same time
Get usb host (hub or not) + charging the tablet
Get hdmi out + usb host + charging.
Cheers
Click to expand...
Click to collapse
I don't know the technical terms behind this but here's the gist of why this won't work: When you are using the HDMI out or the USB OTG it puts the multi purpose connector into a proprietary mode which will I/O a protocol that works with that particular type of device. So when it is in HDMI mode it is using certain data pins to connect with the HDMI pins, and when it is in USB OTG mode it is using some of the same pins to connect to USB data pins.
It can only be in one mode or the other at once, so if you hooked up a hub to a usb OTG connector, or used a USB OTG hub, the jack on the note is going to be in USB OTG mode/protocol, and it will not recognize an HDMI adapter also connected to the hub as an HDMI device that it supports. Only storage devices, HID input devices, and samsung printers are supported on the USB OTG.
Since this is a hardware restriction, I'm 99% sure it cannot be programmed around. I think the same applies to why you cannot charge while using the USB OTG. As far as I know all the HDMI adapters require a usb power source and will somewhat charge the tablet.
Nirvana388 said:
I don't know the technical terms behind this but here's the gist of why this won't work: When you are using the HDMI out or the USB OTG it puts the multi purpose connector into a proprietary mode which will I/O a protocol that works with that particular type of device. So when it is in HDMI mode it is using certain data pins to connect with the HDMI pins, and when it is in USB OTG mode it is using some of the same pins to connect to USB data pins.
It can only be in one mode or the other at once, so if you hooked up a hub to a usb OTG connector, or used a USB OTG hub, the jack on the note is going to be in USB OTG mode/protocol, and it will not recognize an HDMI adapter also connected to the hub as an HDMI device that it supports. Only storage devices, HID input devices, and samsung printers are supported on the USB OTG.
Since this is a hardware restriction, I'm 99% sure it cannot be programmed around. I think the same applies to why you cannot charge while using the USB OTG. As far as I know all the HDMI adapters require a usb power source and will somewhat charge the tablet.
Click to expand...
Click to collapse
Thanks for the info just what I was after, it all sounds like a bummer but not too bad. Sounds like I will need root to connect a ps3 controller then.
badasschris said:
Thanks for the info just what I was after, it all sounds like a bummer but not too bad. Sounds like I will need root to connect a ps3 controller then.
Click to expand...
Click to collapse
No need to root for ps3 controller use. My sixaxis works fine using the standard usb adapter. You'll only need to root if you want bluetooth connectivity.

Which USB hub?

I was having issues with the stick recognizing a usb ethernet adapter. After rooting, it now recognizes ethernet but only if I connect the adapter directly to the usb port which leaves me no place to plug in a receiver for a remote or keyboard/mouse. I have a USB hub and while the hub works for the remote dongle, ethernet is not recognized if I plug the USB/ethernet adapter into the hub. I'm hoping that the problem is the hub, it is quite old, predates USB 2.0 by a long ways. So I need a recommendation for a hub - any particular one I should use? Powered hub? New power plug for the android stick itself?
Thanks
You must to have powered hub (nice 1A).
I suggest that you can also partly solve the problem using the same configuration that I have: use a Logitech k400 wifi keyboard with integrated trackpad. I attach the wifi unified adapter via an OTG cable using the OTG port.
Frees up the USB port nicely
Thus keyboard also works perfectly with my laptop, nexus 7 and ps3!. It's 40 gbp on the amazon store.
Sent from my Nexus 7 using xda app-developers app
I used this one it it worked great.
http://www.amazon.com/gp/product/B004Q3RUFK/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1

Slimport and USB connection

Hey guys,
I've been curious, if it's possible to use a slimport adapter and connect it to a display AND have something else connected via the additional charging USB Port.
Such as playing a movie right from a stick with the nexus 5 or a USB keyboard connected at the same time via USB Hub.
Or is there any other option to realise something like this?
Sent from my Nexus 5 using xda app-developers app
This was the first thing I did when I got my adapter. The port is only for charging sadly...
If keyboard/mouse is all you need, you can always get a bluetooth one. If you need OTG for other stuff though, you'd have to use a wireless mirracast adapter instead of slimport.

Categories

Resources