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[Q] Help with USB Host (OTG)

Hi All,
I'm trying to get a USB device connected to my phone (specifically an OBDII reader with Torque Pro). No matter what I do, I can't get it to recognize on my Nexus S 4g. When I run USB Host Diagnostics, it basically says it can't find anything.
I'm running a flavor of Cyanogen 10 with its stock kernal.
My questions are:
Do I need to go through a powered USB hub to get the proper power?
Do I need a specific kernel with the correct host modules enabled? (if so, can someone point me to one)
Thanks,

Torque Pro worked fine with my NS4G with a cheap ebay bluetooth adapter with no hassle. That adapter had no batteries at all, it was powered through the ALDL port on the car. I couldn't imagine needing power since no scanner I know of needs power at the ALDL port, it pulls it from the port itself. I would bet it is USB driver problems, or problems reading the USB adapter through Jellybean because of this new MTP protocol that sucks

Good to know.
Should I try a HoneyComb ROM? I guess it COULD be the OTG cable I got from amazon. Maybe it's not plugging in all the way.
thx
DizturbedOne said:
Torque Pro worked fine with my NS4G with a cheap ebay bluetooth adapter with no hassle. That adapter had no batteries at all, it was powered through the ALDL port on the car. I couldn't imagine needing power since no scanner I know of needs power at the ALDL port, it pulls it from the port itself. I would bet it is USB driver problems, or problems reading the USB adapter through Jellybean because of this new MTP protocol that sucks
Click to expand...
Click to collapse

shelbydz said:
Good to know.
Should I try a HoneyComb ROM? I guess it COULD be the OTG cable I got from amazon. Maybe it's not plugging in all the way.
thx
Click to expand...
Click to collapse
No Honeycomb roms for Nexus S...
I highly suggest a OBDII bluetooth adapter. They're 15$ on the net and will spare you the trouble. Make sure you find one that has good reviews, some cheap ones have problem connecting to some cars because of broken J1850 PWM (i think it's PWM, might be VPW) protocol.

[Q] mhl hdmi - otg adapter : using both at the same time

http://www.ebay.com/itm/USB-MHL-OTG...t-for-Galaxy-S3-S4-S5-i9600-BK-/121338519505?
this adapter claims to be able to do hdmi output as well as OTG at the same time.... anyone have experienced with such adapters? do they really work?

yeahman45 said:
http://www.ebay.com/itm/USB-MHL-OTG...t-for-Galaxy-S3-S4-S5-i9600-BK-/121338519505?
this adapter claims to be able to do hdmi output as well as OTG at the same time.... anyone have experienced with such adapters? do they really work?
Click to expand...
Click to collapse
Funny, I actually have. I work in a computer repair/data recovery shop and we have a phone in with a broken screen/lcd. Long story short is that the device did not work with the phone we got it for, nor my phone (Galaxy S5), and I know my MHL works on my phone but we needed KB/Mouse support as well.
It may have been a bunk device and we haven't requested a replacement yet, so If you try it out let me know if yours works, and when we get our replacement i'll let you know.

actually the seller replied to me and says that this cannot do hdmi and otg at the same time but apparently this dock does : http://pages.ebay.com/link/?nav=ite...obalID=EBAY-US&ssPageName=ADME:X:ACME:US:1123
but this dock is not compatible with galaxy s5 ... i wonder why

yeahman45 said:
actually the seller replied to me and says that this cannot do hdmi and otg at the same time but apparently this dock does : http://pages.ebay.com/link/?nav=ite...obalID=EBAY-US&ssPageName=ADME:X:ACME:US:1123
but this dock is not compatible with galaxy s5 ... i wonder why
Click to expand...
Click to collapse
Actually I didn't see where is said it wasn't compatible with the S5, it only list a few year old phones.

Oditius said:
Actually I didn't see where is said it wasn't compatible with the S5, it only list a few year old phones.
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Click to collapse
I asked the seller if it was compatible with the S5 and he said no

byransays said:
Funny, I actually have. I work in a computer repair/data recovery shop and we have a phone in with a broken screen/lcd. Long story short is that the device did not work with the phone we got it for, nor my phone (Galaxy S5), and I know my MHL works on my phone but we needed KB/Mouse support as well.
It may have been a bunk device and we haven't requested a replacement yet, so If you try it out let me know if yours works, and when we get our replacement i'll let you know.
Click to expand...
Click to collapse
did you get a replacement? does it work with hdmi and usb host at the same time?

i received and used the same one adapter
yes it can do both at the same time
although i am not satisfied with the image quality of the hdmi output

...which one
Purplys said:
i received and used the same one adapter
yes it can do both at the same time
although i am not satisfied with the image quality of the hdmi output
Click to expand...
Click to collapse
Which one are you referring to?

tamuin said:
Which one are you referring to?
Click to expand...
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the one OP says:
http://www.ebay.com/itm/USB-MHL-OTG...t-for-Galaxy-S3-S4-S5-i9600-BK-/121338519505?

I can't believe there is no good adapter or dock that can do usb host and hdmi at the same time properly...

yeahman45 said:
I can't believe there is no good adapter or dock that can do usb host and hdmi at the same time properly...
Click to expand...
Click to collapse
Unfortunately I don't think so, I used this:
http://www.ebay.de/itm/Lindy-73391-...6?pt=DE_Computer_Sonstige&hash=item462bc81bb0
with a s4, and it worked prperly, but when connected to s5 it doesn't even turns on. I think it is because s5 doesn't have a docking mode, in fact if you go in Settings-->accessories, there is only an option for sound on hdmi, while in s4 there were more (and one was for the docking mode)

I couldn't find anything that worked reliably and consistently. So I use the MHL for HDMI output and use a Bluetooth Keyboard and mouse...

timeToy said:
I couldn't find anything that worked reliably and consistently. So I use the MHL for HDMI output and use a Bluetooth Keyboard and mouse...
Click to expand...
Click to collapse
This is a good solution, but I'm wondering why, since 11 pin connectors usually can handle hdmi and usb otg on the same time, why old dock stations for 11 pin device don't work?

using micro 3.0 for MHL and OTG
i have a SM-G900P and if i make a OTG and MLH cable through usb 3.0 do you think i could charge and use HDMI and 2 usb for keyboard and mouse. My goal is to make my phone like a mini computer on the go for my roms and movies

Possibly use the USB 3.0 Micro-b connection?
All my googling on this matter with the S5 seems to lead to one inevitable conclusion, the S5 won't allow for simultaneous MHL and OTG use, because the S5 uses the 5pin connector and not the 11pin connector (as the S4 seemed to). What I don't understand is, isn't the S5 using USB 3.0 instead of the USB 2.0 as on the S4? How could the S5 allow for faster data transfer rates and yet not be able to transfer more types of data at once?
Isn't there a way to utilize the entire USB 3.0 micro-b format (which apparently has 10 pins, 5 for backwards compatibility with USB 2.0 (except 5pin, and not 11pin), and 5 extra for USB 3.0 speeds) to use MHL and OTG and charging simultaneously?

feeya7 said:
All my googling on this matter with the S5 seems to lead to one inevitable conclusion, the S5 won't allow for simultaneous MHL and OTG use, because the S5 uses the 5pin connector and not the 11pin connector (as the S4 seemed to). What I don't understand is, isn't the S5 using USB 3.0 instead of the USB 2.0 as on the S4? How could the S5 allow for faster data transfer rates and yet not be able to transfer more types of data at once?
Isn't there a way to utilize the entire USB 3.0 micro-b format (which apparently has 10 pins, 5 for backwards compatibility with USB 2.0 (except 5pin, and not 11pin), and 5 extra for USB 3.0 speeds) to use MHL and OTG and charging simultaneously?
Click to expand...
Click to collapse
I'm having an issue with MHL adapter on my S5, When I connect my MHL adapter to my S5, the audio on my TV seems delayed, but when I tried it on my S3, the audio is perfectly fine. Is this something to do with S5 having 5 pin only wherein S3 having 11pin?
I saw a 5 pin to 11 pin converter on Amazon, will this solve this issue? And possibly the issue of not being able to use MHL/HDMI and USB at the same time?

buy chrome cast you can screen mirror or use almost any app directly to the tv when it comes to videos and such theres a little allshare
button at the top of like the video player, you tube etc.
also a smart tv does the same thing only better (all the above scenarios will only work with a connected network)

what is wrong with the image quality?

Chromecast works for me at home or anywhere it has standard wifi, but is too painful in most hotels that use a web user login. Without net access it was almost useless last time I tried. I could pair with it, but it wouldn't stream local files from my device. Most places I've stayed in the last few years have an active HDMI port on their tv, so the MHL HDMI and OTG with USB wireless mouse on an S3 worked for me, even though I couldn't charge at the same time. Haven't been able to make that work so far with anything I've tried on the S5.

Still no luck with S5 docking (MHL+OTG)
Hello!
I've been using this adapter for a while with a Samsung Galaxy S4:
http://www.aliexpress.com/item/MHL-...or-Samsung-Galaxy-S3-S4-Note/32461052976.html
Charging, HDMI connection and USB keyboard + mouse works very nice.
Unfortunately no luck with S5. Not even charging works. I read S5 doesn't use 11-pin USB (because of the USB 3.0 plug, etc...). If that's true, then not even installing a custom ROM would make the docking work.
According to http://forum.xda-developers.com/showpost.php?p=57336973&postcount=4, "the G800F is capable of USB OTG. It simply is not enabled in the stock firmware." I know this is about a S5 Mini, but wouldn't it be the same for the S5?

[Q] Charging Nexus 9 while using OTG cable/usb hub?

As the title says, I want to charge my Nexus 9 while using a keyboard/mouse and other peripherals that I would have connected to the Nexus 9 through a USB hub. I know it is not always possible to charge through the hub, so I was thinking about something like a 'micro USB splitter" that expands the micro-USB port into 2 micro-USB ports: one for the charger that comes with the Nexus 9, and the second port for a OTG cable/usb hub/etc. Anyone have any thoughts on this?
I did read this post here for the Nexus 7 but not sure if the same is true for the Nexus 9.or if any additional options existed for the 9. Ultimately, I guess I'm wondering if it is unrealistic to expect to find something that charges the device at the same time as using a hub/OTG cable without too much modding or hassle? My device is rooted and I've flashed some mods and tweaked some things on previous devices I've had, but am by no means an expert so I would hope to keep the hacking/modding for something like this to a minimum, if possible. Plus, there's an outside chance I may return the Nexus 9 in the next week so I wouldn't want to get too crazy until I knew for sure I'd be keeping it.
I understand that a specific kernel with certain capabilities may be needed, but I'm unsure how to find out which kernel would work and if it would be compatible with stock ROM or CM12 (when it comes out). Any help would be greatly appreciated. Even if it's a pipe dream, I'd at least know not to continue to waste my time looking for a solution that doesn't exist

I tried this one a few days ago but it did not work: https://sites.google.com/site/sonicboomworld/my-projects/otg-and-charging
Maybe it's possible with the right resistor value.
Edit:
Mod for Nexus 7 - needs kernel support:
https://mehrvarz.github.io/usb-host-mode-power-management-nexus7/

Thanks for the reply - is this kernel still being supported by the dev and is it confirmed working on Nexus 9?

I don't know as i do not own a Nexus 7.
But even if he still supports this kernel it would not help much for the Nexus 9:
A kernel is very hardware specific and the OTG changing issues is even more hardware specific.
There is absolutely no chance that you can simply use the N7 kernel on the N9.
One of the amazing kernel developers (who owns a N9) here at XDA would have to look at it.
Generally I think for "OTG + charging" to work the USB chipset on the device has to support it and/or you have to find out how you could trick the device into enabling this mode (with a certain resistor on the USB connector and/or with a kernel modification).
The bad thing is that no device seems to support the official "USB Accessory Charger Adapter" specification. (see section "OTG micro plugs" here: https://en.wikipedia.org/wiki/USB_On-The-Go for details)

Just to give you more information, there was a nexus 7 kernel by flar2 called ElementalX which had OTG + charging support. He is working on ElementalX for Nexus 9 as well, and he said he may or may not add support for it. If you and maybe others are interested, I'm sure that it will get added upon request.

MWFD said:
As the title says, I want to charge my Nexus 9 while using a keyboard/mouse and other peripherals that I would have connected to the Nexus 9 through a USB hub. I know it is not always possible to charge through the hub, so I was thinking about something like a 'micro USB splitter" that expands the micro-USB port into 2 micro-USB ports: one for the charger that comes with the Nexus 9, and the second port for a OTG cable/usb hub/etc. Anyone have any thoughts on this?
I did read this post here for the Nexus 7 but not sure if the same is true for the Nexus 9.or if any additional options existed for the 9. Ultimately, I guess I'm wondering if it is unrealistic to expect to find something that charges the device at the same time as using a hub/OTG cable without too much modding or hassle? My device is rooted and I've flashed some mods and tweaked some things on previous devices I've had, but am by no means an expert so I would hope to keep the hacking/modding for something like this to a minimum, if possible. Plus, there's an outside chance I may return the Nexus 9 in the next week so I wouldn't want to get too crazy until I knew for sure I'd be keeping it.
I understand that a specific kernel with certain capabilities may be needed, but I'm unsure how to find out which kernel would work and if it would be compatible with stock ROM or CM12 (when it comes out). Any help would be greatly appreciated. Even if it's a pipe dream, I'd at least know not to continue to waste my time looking for a solution that doesn't exist
Click to expand...
Click to collapse
The company I work for is developing a OTG cable that does exactly that: lets you charge your phone/tablet while using a USB peripheral.
We are testing it in the UK market currently, but not selling in the US at the moment. You can check it out here: http://www.amazon.co.uk/Sansys-Char...F8&qid=1417298449&sr=8-1&keywords=usb+otg+mlc
We were thinking about doing a kickstarter or indiegogo for it, but not sure the amount of interest in a niche device like this.

Can you confirm that it is working on the Nexus 9? (and/or the Nexus 5)?
If it is, I'll order one immediately. I've been looking for such a thing since I had my Galaxy S2.

lfrst05 said:
Can you confirm that it is working on the Nexus 9? (and/or the Nexus 5)?
If it is, I'll order one immediately. I've been looking for such a thing since I had my Galaxy S2.
Click to expand...
Click to collapse
I can't confirm that it will work on the Nexus 9, but my partner from China is sending me a sample so I can try it out. I have a Nexus 9 and 5 also, and they'll be the first devices I will test it on.
We've also sent a couple out to some Youtube reviewers as well, so there may be a video review on them soon.

We just put up an Amazon US listing for this cable if any of you in the states want to try it out: http://www.amazon.com/dp/B00OLKFR44/
I should have one in hand in the middle of the week to test out.

mkygod said:
We just put up an Amazon US listing for this cable if any of you in the states want to try it out: http://www.amazon.com/dp/B00OLKFR44/
I should have one in hand in the middle of the week to test out.
Click to expand...
Click to collapse
I'm really excited to get my hands on one of these! let me know if it works.

mkygod said:
I can't confirm that it will work on the Nexus 9, but my partner from China is sending me a sample so I can try it out. I have a Nexus 9 and 5 also, and they'll be the first devices I will test it on.
We've also sent a couple out to some Youtube reviewers as well, so there may be a video review on them soon.
Click to expand...
Click to collapse
Sweet, this sounds awesome, let us know if it works :fingers-crossed:

mkygod said:
We just put up an Amazon US listing for this cable if any of you in the states want to try it out: http://www.amazon.com/dp/B00OLKFR44/
I should have one in hand in the middle of the week to test out.
Click to expand...
Click to collapse
This arrived from Amazon today. Unfortunately I can't get it to work. When the micro usb is plugged into the N9 it lights up blue. At that point I'm able to mount a thumb drive, use a mouse and Playstation controller. But once the other end is plugged into a charger the light goes off and whatever is connected stops working. The N9 begins to charge at that point. If plugged into my PC, same thing.
Note: the blue light goes off when other end is plugged in regardless of if anything else is in use.
BTW, running elementalX kernel and Lollipopalooza rom.

TSman74 said:
This arrived from Amazon today. Unfortunately I can't get it to work. When the micro usb is plugged into the N9 it lights up blue. At that point I'm able to mount a thumb drive, use a mouse and Playstation controller. But once the other end is plugged into a charger the light goes off and whatever is connected stops working. The N9 begins to charge at that point. If plugged into my PC, same thing.
Note: the blue light goes off when other end is plugged in regardless of if anything else is in use.
BTW, running elementalX kernel and Lollipopalooza rom.
Click to expand...
Click to collapse
I've heard some people say in certain other situations with OTG + charge, you need to plug everything in first, then plug the OTG cable into the device. Try that and see if it works?

saadi03 said:
I've heard some people say in certain other situations with OTG + charge, you need to plug everything in first, then plug the OTG cable into the device. Try that and see if it works?
Click to expand...
Click to collapse
Gave it a shot with this method but still a no go. Tried it on my phone as well with no luck.

TSman74 said:
Gave it a shot with this method but still a no go. Tried it on my phone as well with no luck.
Click to expand...
Click to collapse
Thats a bummer, thanks for the info.

Would we happen to need a kernel that supports simultaneous charging and data transfer? I bought a usb y cable and that only allows me to use one or the other. Which sucks .

Some devices have been known to work with only modified OTG cables such as galaxy tablets and experia phones.

What would this modification be?

I finally got a chance to test out these cables. I thought my first cable was busted so I ordered a 2nd one.
I'm VERY sorry to report that this cable does NOT support USB OTG AND CHARGING AT THE SAME TIME. It is not just your device.
Apparently, there was some miscommunication between me and by business associate in China that lead me to believe that this cable would function this way but it only functions as a USB OTG OR CHARGER CABLE. Language barrier didn't help since I do not speak Chinese and he does not speak English very well. If you read the description, the functionality of this cable is not very clear and obviously written by someone with English as a second language. And also, I can see how the photos can be misleading as well. He went and listed this product on our Amazon account to sell before he even sent me a sample for me to test out and I'm kinda mad at him for doing that.
I was pretty excited at the prospect of it doing OTG and charging at the same time, but now im dismayed that this cable cannot do it. This whole thing was a waste of time to try to bring a product like this to the US that bares little benefit other than being a 2 in 1 cable that can replace a regular USB OTG cable and a Charging cable (albeit a very short charging cable). Sorry that I got your hopes up guys
I do want to clarify exactly what this cable does though: Basically all it does is switch from Charging mode to USB OTG mode depending on how you have it plugged in. If you plug the cable into the mobile device only, the blue light will turn on, letting you know that you can use the USB OTG port. However, once you plug the other end of the cable into a charger, the blue light will turn off, and the cable goes into charging mode. The USB OTG port will not work or light up again until you remove the cable from your charger.

hey there everyone, i'm trying to understand this a bit more. i have the same cable, but my understanding is that it wont work unless the kernel supports it. does anyone know if this is possible to actually fix in the Nexus 9 kernel? i really need this for a project

OTG and recharging shield tablet at the same time possible???

Anybody knows if its possible to connect usb OTG host and charge the tablet at the same time, i found out a way to enable adoptable storage on USB drives so im planning to offload my console games(borderlands, half-life,etc) to an external hard drive cause i only play them at home when im in console mode, and if it is possible anybody knows where to get one from a reliable seller?

Haha just bought an adapter on amazon.

Niii4 said:
Haha just bought an adapter on amazon.
Click to expand...
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Does it work charge and enable usb host at the same time? The current one i have acts weird, if i leave tablet alone, usb plugged in host mode as adopted storage my k1 charges, but if i start using it, even on light usage, battery discharges even if it indicates it is charging

Haven't tried it yet. I'll let you know ASAP when I've tested it.

This thread is a little old but still applies:
https://r.tapatalk.com/shareLink?ur...share_tid=2949321&share_fid=3793&share_type=t
USB OTG and Y cables?
Sent from my SHIELD Tablet K1 using Tapatalk

Okay, they one I've got is damaged. Gotta send it back.
The ones Exile suggested I've one of them. Though, they connect all to big female USB! So you'd need another USB cable (Big male USB to micro male USB for the tab).

I've been using this one, and it works pretty well for charging and using OTG at the same time. But it won't recognize USB devices unless the charger is plugged in, probably because it has a built-in hub.
https://www.amazon.com/Adaptor-Powe...=1474901496&sr=1-1&keywords=usb+otg+cable+hub

Thank you for the replies and suggestions, looks like the one im gettting is the same one by @primaleph

Y OTG cables do NOT work with the Shield. I tested a bunch and it's either charging or gamepad but never both simultaneously.

Niii4 said:
Y OTG cables do NOT work with the Shield. I tested a bunch and it's either charging or gamepad but never both simultaneously.
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Click to collapse
Well actually they do, very2 slow, i hooked the OTG i bought to my charger, my tablet and my printer, then started doing some typing work while listening to some tracks on spotify max volume and at about 20% brightness,, after i finished and checked my battery it went up from 95 to 97, also tried the same with a usb attached, so for light loads it does charge but for gaming, even i lose charge when playing games such as vain glory while the tablet is directly charging so im sure its still gonna drain but probably not as fast as not charging at all, or another thing is not all OTG Y cables are configured the same me and @primaleph just got lucky with the ones we got and yours are probably the not compatible ones

A printer?
Anyhow, it doesn't show the lightning symbol if two devices like charger and gamepad are simultaneously connected. Whereas, using just one of the devices works.

Niii4 said:
A printer?
Anyhow, it doesn't show the lightning symbol if two devices like charger and gamepad are simultaneously connected. Whereas, using just one of the devices works.
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Click to collapse
Yeah i use an app called printershare, it allows me to use printers directly via usb connection cause i still own those old printers with no wifi connection costs 10 bucks for the license though, i tried with my old usb gamepad and it also charges and gamepad works, i think you need a more powerful charger, i use a tronsmart quickcharge 3.0 with a 2nd port with a max of 6.5V 3amp output which i use to charge it in OTG mode, 5V 2amp chargers should work but sometimes the power cuts out on The devices being connected, happened to me while on a boat trip, boring 2hr ride, me and GF wanted to listen to some music but we both own over the ear headphones not those little earphones, i charge my shield with a powerbank that provides 5V 2A output, plug it in the OTG and use a usb soundcard with with two audio jacks so we both could listen and throughout the trip there are times the soundcard would lose power which was pretty annoying,

Heres a screen recording where it is charging and i attach devices one by one to my shield tablet

https://www.youtube.com/watch?v=x3miSU6FpDg
i bought this one , it work not enough quick and don t know if i did well,
i use mode 1 , plug hdd then plug charge, in video they use mode 2

A71 5G no hdmi only with MHL adaptor

AH man what disappointment tried my USB C hub with HDMI and nothing quick google search and you need a MHL adaptor what a step back
do they even make USB C MHL adaptor adapters
takes me back to my note 3 - 4 days those adapter can't even keep phone charging while consuming power as far as I remember it was and issue back then they only charge in "USB charging" mode speed 500 ma or less
have they advance with USB C ??
https://us.community.samsung.com/t5/Other-Mobile-Devices/Samsung-Galaxy-A71-5g/td-p/1348322

I do see MHL to HDMI cables on Amazon. But I am not sure if any of them work. I am personally looking for one so I can use it in the car so my kids can watch what I mirror off my A71 5g.
If anyone comes across a cable that works, please let me know. TIA

ATT-Half said:
AH man what disappointment tried my USB C hub with HDMI and nothing quick google search and you need a MHL adaptor what a step back
do they even make USB C MHL adaptor adapters
takes me back to my note 3 - 4 days those adapter can't even keep phone charging while consuming power as far as I remember it was and issue back then they only charge in "USB charging" mode speed 500 ma or less
have they advance with USB C ??
https://us.community.samsung.com/t5/Other-Mobile-Devices/Samsung-Galaxy-A71-5g/td-p/1348322
Click to expand...
Click to collapse
You shouldn't be too surprised if you're looking for old technology and get flashbacks of your old devices, what do you expect? I remember cables was a thing on my S3..
Its 2020, not 2012, who uses wires when we can easily go wireless? Spend that money you're wanting to buy wires with on a cheap Chromecast if your TV doesn't already have it built in. You can get a used one for like under $10, $5 probably.. I can sell you my 1st gen CC, for $5 if you want..
Then look for the "cast" feature in settings and there you go. That let's you cast a video on your TV screen while you can be doing something totally different on your phone, like browsing the web or something. Now if you want to mirror your phone screen so the exact image appears on the TV, thats possible too..

This may not help the individual question, however, it may provide info for someone.
I have casted my Note 8 using a Chrome Cast and Roku. The Roku Ultra worked much better as there was no lag.
I also cast movies from my PC Windows 10 to my Smart TV via Web/Internet and that works great. Problem with Roku is that Roku does not support AVI format movies. So, I can play AVI movies from my Note 8 or PC to the TV.