Do i need a custom Kernel to get that capability?? I have a OTG cable that works for connecting a mouse, keyboard, thumbdrive etc and it has a port for power but the tablet does not recharge.
So i'm wondering if i need a custom Kernel or maybe the cable is defective or something.
If you know of one of those cables that work, please let me know.
Thanks in advance.
I have this cable out of China:
treetop777 said:
Do i need a custom Kernel to get that capability?? I have a OTG cable that works for connecting a mouse, keyboard, thumbdrive etc and it has a port for power but the tablet does not recharge.
So i'm wondering if i need a custom Kernel or maybe the cable is defective or something.
If you know of one of those cables that work, please let me know.
Thanks in advance.
I have this cable out of China:
Click to expand...
Click to collapse
I use a Otg Cable with an Usb Stick and a Usb Mouse,works fine with 4.4.2 and 4.2.2 with Stock Kernel
letschky said:
I use a Otg Cable with an Usb Stick and a Usb Mouse,works fine with 4.4.2 and 4.2.2 with Stock Kernel
Click to expand...
Click to collapse
And also charges simultaneously? That's what the OP is asking for.
Slimport adapter outputs HDMI signal and lets you charge the tablet simultaneously, but besides that... nothing else on stock ROM I imagine.
Iknownot said:
And also charges simultaneously? That's what the OP is asking for.
Slimport adapter outputs HDMI signal and lets you charge the tablet simultaneously, but besides that... nothing else on stock ROM I imagine.
Click to expand...
Click to collapse
Bummer! That's what i was afraid off.
Hello I have the same problem! : (
I installed the tablet in my car but you can not use the charger + OTG simultaneously.
You have to wait for someone to change the KERNEL as they did for the Nexus 7.
mannyy said:
Hello I have the same problem! : (
I installed the tablet in my car but you can not use the charger + OTG simultaneously.
You have to wait for someone to change the KERNEL as they did for the Nexus 7.
Click to expand...
Click to collapse
Nice setup! :good: That's exactly what i want to do. I can connect a mouse and thumb drive but no power. I was trying to work-out how to use a switch or relay or something to switch between otg and power but i haven't came up with anything yet.
treetop777 said:
Nice setup! :good: That's exactly what i want to do. I can connect a mouse and thumb drive but no power. I was trying to work-out how to use a switch or relay or something to switch between otg and power but i haven't came up with anything yet.
Click to expand...
Click to collapse
Hi everyone,
I had same problem!
My pad is rooted, 20b, stock kernel, Finally, find out solution.
I bought IBUFFALO usb with AC power around 15USD. 4 Slots for USB 2.0 and 1 double micro usb. Worked with mouse, Bluetooth keyboard, external drive with USB 2.0 only, usb 3.0 not work. Just for your info.
treetop777 said:
... I was trying to work-out how to use a switch or relay or something to switch between otg and power but i haven't came up with anything yet.
Click to expand...
Click to collapse
Difference between normal and OTG USB cable is that OTG has pins 4 (sense) and 5 (ground) shorted and on regular cable pin 4 is not in use. If you put a switch between these two pins you can switch between regular USB cable for charging and OTG for connected devices.
Some apps can be found on Google Play Store that claim to be able to switch between or enable simultaneous OTG and charging, but most are for specific devices or group of devices, none for G Pad 8.3. Most promising is maybe Faux123 Kernel Enhancement Pro (3.77€ and requires Root+Busybox+SuperSU).
Too bad our tablet has no secondary charging port (like Sony has magnetic charging port for example), but least intrusive would be to use powered USB HUB, let it power the connected devices so the battery drain on the tablet will stay low.
Iknownot said:
Difference between normal and OTG USB cable is that OTG has pins 4 (sense) and 5 (ground) shorted and on regular cable pin 4 is not in use. If you put a switch between these two pins you can switch between regular USB cable for charging and OTG for connected devices.
Some apps can be found on Google Play Store that claim to be able to switch between or enable simultaneous OTG and charging, but most are for specific devices or group of devices, none for G Pad 8.3. Most promising is maybe Faux123 Kernel Enhancement Pro (3.77€ and requires Root+Busybox+SuperSU).
Too bad our tablet has no secondary charging port (like Sony has magnetic charging port for example), but least intrusive would be to use powered USB HUB, let it power the connected devices so the battery drain on the tablet will stay low.
Click to expand...
Click to collapse
Thanks for that - Very good info! Allow me to pick your brain a little more: Looking at the cable i have (in the OP), do you think that by just connecting an external power (red and black) to the cable just before going into the tab would work somehow to give it power.
It's intreging what you said about being able to switch from regular USB (that can supply power) to OTG just by jumping those wires. I'm trying to picture something in my mind to accomplish what we want but the "light bulb" haven't came on yet - any suggestions?
I want to use the tab in the car PERMANENTLY so i need a way to charge it while behind the dash. I would want to use a mouse as well so OTG is a must.
In any case, i'm going outside right know to split open that cable and see how it's connected inside, maybe then the light bulb will come on in my head.
treetop777 said:
Thanks for that - Very good info! Allow me to pick your brain a little more: Looking at the cable i have (in the OP), do you think that by just connecting an external power (red and black) to the cable just before going into the tab would work somehow to give it power.
Click to expand...
Click to collapse
Try it out, you got the cables!
When pins 4 & 5 get shorted the tablet may be configured only to output power, not receive it. I have only OTG adapter cable and the supplied USB charging/data cable, so I cannot test this stuff.
treetop777 said:
It's intreging what you said about being able to switch from regular USB (that can supply power) to OTG just by jumping those wires. I'm trying to picture something in my mind to accomplish what we want but the "light bulb" haven't came on yet - any suggestions?
Click to expand...
Click to collapse
I would buy micro USB male plug, some heat-shrink tubing with glue, switch (3A) and split OTG adapter or HUB. Cut off the male plug fom the adapter, solder on the new plug to the adapter cable as normal USB, solder on the switch to pins 4 & 5 of the plug, check it for continuity and shorts, test it on the tablet, if good - secure the new plug to the cable with heat-shrink tubing.
EDIT: Possible solution with resistor described here
Our device, if it can be tricked this way, may require different resistor from the one used in the tutorial (usually in 36KΩ-200KΩ range).
Ok, I'm chopping it up! I spliced-in the red and black wires from a USB cable into the OTG cable (in the OP) and sure enough the tab gets power. However, it no longer detect the mouse or any thing else (kind of expected). Tomorrow i will try bridging pin 4 and 5 and see what happens. If that don't work, i will try the resistor. :fingers-crossed:
I have read that devices on OTG get polled regularly, but charging is not, i.e. if you start charging and after that short the pins 4 & 5, it will continue charging and you can use your OTG devices. Hope this holds true to the G Pad as well.
Isn't micro USB a "standard"....??
Then GEEZZ why do one manufacturer thinks it's ok to eliminate a pin completely! i assume that when i pay for that cable, i will get ALL 5 PINS even if one is not connected - rip-off! :laugh: This manufacturer not only didn't connect pin 4, it was eliminated completely; stopped me in my tracks! Fortunately, i have an extension that have of all things ALL 5 WIRES CONNECTED! Imagine that! But now, i don't have any time to chop-it-up until tomorrow. With the 5 wire cable, i will short the yellow and black wires but I'll check here first to see if I'm warned against it.
More to come..
Hi manny your car kooks awesome. I have one question. How you connect your speakers from the car with the G Pad. iam also interested to built a GPad in the car !
Sent from my GT-I9505 using xda app-developers app
Yep weneed more info on this as i would like to fit my pad in the van,, how did you get fm radio on there.
Nothing good to report. Connecting the power wire to the OTG cable and shorting the 4&5 pins does nothing different. I can have it charging and when i disconnect power, it then detects the mouse (that's a good thing) but when i plug the power back in, nothing happens! Ideally it would disconnect the mouse and start charging again but no-go. Having the 4&5 pins shorted or not makes no difference.
Still have a couple things i will try before i give up, one is the resistor and the other is a more simple OTG cable.
Will report back.
treetop777 said:
Nothing good to report. Connecting the power wire to the OTG cable and shorting the 4&5 pins does nothing different. I can have it charging and when i disconnect power, it then detects the mouse (that's a good thing) but when i plug the power back in, nothing happens! Ideally it would disconnect the mouse and start charging again but no-go. Having the 4&5 pins shorted or not makes no difference.
Click to expand...
Click to collapse
I understand that you would want the cables all hidden behind the dash in a car and can't be connecting and disconnecting plugs all the time, at the most just flip of a switch should make things work. The resistor trick would be ideal, if it works.
What's the exact sequence you did things in?
- Mouse and charger connected to the tablet simultaneously with pins 4 & 5 not shorted, tablet charging - short pins 4 & 5 - what happens?
- Only charger connected, pins not shorted, short pins and then connect mouse...
- Mouse and charger connected to the tablet simultaneously with pins shorted, mouse working - unshort pins...
- Only mouse connected, pins shorted, unshort pins and then connect charger...
Iknownot said:
I understand that you would want the cables all hidden behind the dash in a car and can't be connecting and disconnecting plugs all the time, at the most just flip of a switch should make things work. The resistor trick would be ideal, if it works.
What's the exact sequence you did things in?
- Mouse and charger connected to the tablet simultaneously with pins 4 & 5 not shorted, tablet charging - short pins 4 & 5 - what happens?
- Only charger connected, pins not shorted, short pins and then connect mouse...
- Mouse and charger connected to the tablet simultaneously with pins shorted, mouse working - unshort pins...
- Only mouse connected, pins shorted, unshort pins and then connect charger...
Click to expand...
Click to collapse
I would have to record in what sequence i do things to remember but it seem i have done every combination possible. I do remember doing these sequences after a fresh reboot of the tablet and BTW i made a simple cable out of a know working (single) OTG cable and splicing-in the red and black from the cable that has 5 wires connected, leaving the pin 4 wire disconnected and extending a pigtail from the black wire so i could short the yellow and black to hopefully force OTG:
- Power plugged in and mouse plugged-in then plug the cable into the tablet - it detects the mouse but does not charge.
- in the above state, shorted the yellow and black wire - no change.
- separated 4/5 then disconnected the mouse leaving power connected (expecting that the tab will then switch to charge but) - nothing. The mouse did disapear but the tab did not start to charge.
- shorted 4/5 (for ****s and grins) and as expected - nothing.
Again with a fresh tablet:
- with (ONLY) power connected to the cable, inserted the cable into the tablet - it started charging.
- in that same state, connected mouse - mouse was NOT detected but the tab continued to charge.
- with mouse plugged in, shorted 4/5 - no change (charging but no mouse detected)
THIS IS THE IDEAL SITUATION BUT JUST HALF WAY:
Rebooting the tablet with both power and mouse connected and cable inserted, the tab starts by accepting the charge (no mouse) but get this, plugging-out power makes the tab switch to the mouse right away! That would be good except that plugging the power back in does NOT make the tablet switch back to power, in fact, nothing happens, the mouse just continues to be detected.
If i had 2 cables, one only for power and the other only for OTG, i could pull one out and replace it with the other and both functions would work; i don't understand why that same "switching" can be recreated within one cable??
This is beyond me, the last thing i will try is following your sequences to the letter and with the resistor, if that doesn't work - i give up! :crying:
budalageo said:
Hi manny your car kooks awesome. I have one question. How you connect your speakers from the car with the G Pad. iam also interested to built a GPad in the car !
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
i have buy a Sony mex bt4000U ... http://www.sony.it/support/it/product/MEX-BT4100U
install in rear a Tablet.. http://www.youtube.com/watch?v=5Y1QXAsSUtc
and work whith APP REMOTE http://www.youtube.com/watch?v=AEfG3Zdf7HM
---------- Post added at 11:02 AM ---------- Previous post was at 11:00 AM ----------
I have used this !!
have disassembly and install !!! work whit switch !!
http://www.ebay.it/itm/231182187439?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Related
The most Micro USB to USB converters are not work if you want to use it for OTG converter, because the 4. pin of the micro usb plug is not connected!
The most ebay and computer shop's converters like this!
If you want to use it for working OTG adapter you have to connect the micro usb connector 4. pin to GND (5. pin).
Like this:
I made this mod on my adapter and it works!
First you have to open up the outter cover and carve the plastic around the micro usb pins. You can use multimeter to check the pinout.
After that solder the 4. pin to 5. pin with a piece of wire.
And finally glue back the outter cover.
Video:
So if you have not working adapter you can mod it, if you have suffice experience with electronic and proper tools.
Only do with your own risk!
I have this Usb converter!
With your mod works perfectly!!
just tried it it works perf, thank you!
Weird I got one off eBay from Hong Kong and it works without Modding. Can open files off a USB stick. Got it for £1
Sent from my GT-I9100 using XDA Premium App
Anyone knows how the Galaxy determines to be in home or car dock?
ALexander
hi thanks for great find just built one from a female usb cable vey nice.
WOrked for me too...thanks
skibadee said:
Weird I got one off eBay from Hong Kong and it works without Modding. Can open files off a USB stick. Got it for £1
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
Share the link please
I buy a pair in Dealextreme.com
SKU 50774 o search OTG
It may have a resistor between pin 4 and 5, kind of like a jig,
I remember there was a fun with resistors thread for the sgs1.
I may attack tge free dock I,got from optus.
Sent from my GT-I9100 using XDA App
Vairn said:
It may have a resistor between pin 4 and 5, kind of like a jig,
Click to expand...
Click to collapse
OTG has no resistor, its direct connect to GND.
i bought this one from ebay
(cant post links )
item number 260782021641
and it works with usb drives and i used a mouse in it too
OTG Cable USB (B) to Micro USB (A) Powered with AAA batteries ?
As one knows, Samsung has promised a MHL Cable
You noticed it is not only a cable but a box out of which you may plug in an extra power supply.
The obvious reason is if the passive monitor does not furnish 5V, the phone will rapidly be out of power.
Now you know that to obtain video rather than anything less, Pin 4 (sense) and 5 (Ground) of micro USB (male A) must be connected with a 365K resistance.
I suppose the dock Samsung is selling for I9100 (yes, I have it) is grounded at 1000K as it provides audio with remote, and yes, the dock provides power supply via extra micro USB as well.
I come to my point: If I want to access any USB data On the Go, I need a cable OTG with 2 ports: USB 2.0/3.0 (female, B sided) to a micro USB (male, A sided, grounded but with no resistance = 0K). Many of them exist on the market out there.
But it is quite impossible to use because of lack of power supply in the passive device (let’s say a handy 1T HDD usually powered via Host connexion !
Would it be possible to insert some sort of receptacle for AAA battery in the middle of such a cable to provide for power while you are for a long time out of access to an electric plug ? Does such a cable exist somewhere to buy ? What would be the sheme to mount this ? HELP !
Is it possible to add USB charging cable to USB-host cable? I want to use mouse\keyboard\flash and charge device in the same time.
I also interested how to add power to USB-host cable for devices "High-power device connected".
OTG and Power
thats excactly my question:
is it possible to use otg cable with a trackball or mouse and at same time charge the S2?
give power to usb mouse and charge S2 over a charger!?
Is it possible to use a game controller over usb otg? Would be pretty nice.
Wanna have a S2Play ;-)
anonymous572 said:
Is it possible to add USB charging cable to USB-host cable? I want to use mouse\keyboard\flash and charge device in the same time.
I also interested how to add power to USB-host cable for devices "High-power device connected".
Click to expand...
Click to collapse
it is not possible. usb host can be used one way not two ways.
Sent from my GT-I9100
i do have same problem..is there any suggestions to make sgs2 can read the high-power USB flashdisk via otg??
An USB hub with external power maybe ? I didn't tried this kind of setup, but it should work. I have a hub, but I don't have a OTG cable yet.
blueseeker said:
An USB hub with external power maybe ? I didn't tried this kind of setup, but it should work. I have a hub, but I don't have a OTG cable yet.
Click to expand...
Click to collapse
I've been try this, but still doesn't work for me..I'm also used electrical multi-tester, and the usb flash already has 5V voltage but in my sgs2 still nothing happen (my usb flashdisk doesn't mounted to sgs2)..
Is there any driver/apps do I need to install first before using OTG?? or, is there two kind of sgs2, the one which support OTG and the other one not??
please someone help me...One point I choose this SGS2 is the OTG feature..
PS: sorry for my english
I have the official Samsung desktop dock for the GN with pogo pins for charging. I cut out a notch in the left side of the dock so that I could access the USB port on the phone when it's docked. I'd hoped I could then attach a USB OTG cable and mount a flash drive while the phone charged via the pogo pins.
Unfortunately, the two functions seem to be mutually exclusive. If the phone is in the dock and charging and I attach the cable and flash drive, they are not recognized by the phone. Or, if I attach the cable and flash drive first and mount the flash drive before placing the phone in the dock, charging doesn't initiate when I put the phone in the dock.
Does anyone know if there is some way via software or hardware to force pogo pin charging while a flash drive is attached and mounted via a USB OTG cable?
I will try tomorrow on my self built car pogo charger and usb otg. I have aokp with the fast charge override feature.
subvertz said:
I will try tomorrow on my self built car pogo charger and usb otg. I have aokp with the fast charge override feature.
Click to expand...
Click to collapse
Sounds great! Thanks much. If it works, it'll tempt me to go to AOKP myself.
Any luck on this?
I too want to use OTG functionality while charging phone in the official car dock.
USB OTG + charging
I'm actually trying to get the same get something like this going on a galaxy s2 (the I9100g with the omap processor) or a GN, My goal is to get usb host and charging going through the same cable. By making some changes in the kernel i've got the phone to think its in charging mode while in host mode, but if you check the battery status, it's still draining even though it says "charging" and I've got the a usb "Y" cable connected to a 5v 2amp power source.
I think cyanogenmod (there was a post on this here and a standalone app that eventually rolled into the latest cm7 nightly) has this working on a BN nook color (also TI-OMAP Processor), but I have not been able to verify this.
Does anybody have host+charing working on any device with an OMAP processor?
Sorry for the delay, I had an emergency work trip offshore on an oil rig. I can try it out tonight.
Results. Charging OTG killed pogo charging. I tried mounting in pogo charger with OTG already attached mounted with a basic thumb drive. Charging never started. I tried charging with pogo first, then plugging in OTG, charging stopped. I checked to make sure it was actually discharging by waiting for a few percent decrease.
Sorry, I was hoping it would work too.
subvertz said:
Results. Charging OTG killed pogo charging. I tried mounting in pogo charger with OTG already attached mounted with a basic thumb drive. Charging never started. I tried charging with pogo first, then plugging in OTG, charging stopped. I checked to make sure it was actually discharging by waiting for a few percent decrease.
Sorry, I was hoping it would work too.
Click to expand...
Click to collapse
Thanks for giving it a try. It would be interesting to know if this behavior is built into the hardware or could be modified via software/in the kernel. It's consistent with what happens when using a powered USB hub.
Other than a software mod, I'd sure like to see someone start making and selling an Accessory Charger Adapter as described in Chapter 6 of the USB Battery Charging Specification document from 2010. It's the exact thing needed to use USB OTG and charge at the same time.
Anyone knows if its possible to charge via USB, with a device connected?
I connect an adapter microUSB to USB OTG, than connect USB OTG in a USB HUB and than i connect a device in one USB and force in another, is it possible or not??
It may work, since connecting to the pc works.
Title says it all, has anyone tried this?
From what I've read (and the other threads on this topic) - no it can't be done.
It can't be done my friend
I got it to work
psycho1200 said:
It can't be done my friend
Click to expand...
Click to collapse
I used the following and plugged into my TV usb port and had ethernet (verfied with WIFI shut off) and it was charging.
USB 2.0 Ethernet adapter - <amazon.com/gp/product/B003VSTDFG>
OTG with power - <amazon.com/gp/product/B00C452XFO/>
Yup, this now works great for me too! :good:
I bought the Ethernet adapter Nvidia Recommends (same as browncoatdave's)
http://www.amazon.com/Plugable-Gigabit-Ethernet-Chromebook-Specific/dp/B003VSTDFG
And just whatever Y cable could find that didn't look uber cheap.
http://smile.amazon.com/gp/product/B00CXAC1ZW/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1
What I have plugged into the shield
jjprichards said:
Title says it all, has anyone tried this?
Click to expand...
Click to collapse
1) 3 Port USB Hub
2) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Wired Network Adapter
3) Micro USB Host OTG Cable with Micro USB Power
4) Smart Touch Mini USB TouchPad Keyboard
5) Full Size trackball mouse
6) Charging cord
I am charging the battery with ethernet, keyboard and mouse plugged in.
No Problem. But this is also after the kitkat update which added the charging while ethernet is plugged in.
solidsn said:
1) 3 Port USB Hub
2) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Wired Network Adapter
3) Micro USB Host OTG Cable with Micro USB Power
4) Smart Touch Mini USB TouchPad Keyboard
5) Full Size trackball mouse
6) Charging cord
I am charging the battery with ethernet, keyboard and mouse plugged in.
No Problem. But this is also after the kitkat update which added the charging while ethernet is plugged in.
Click to expand...
Click to collapse
trackball mouse, why? gives me flashbacks of the 90s...
solidsn said:
1) 3 Port USB Hub
2) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Wired Network Adapter
3) Micro USB Host OTG Cable with Micro USB Power
4) Smart Touch Mini USB TouchPad Keyboard
5) Full Size trackball mouse
6) Charging cord
I am charging the battery with ethernet, keyboard and mouse plugged in.
No Problem. But this is also after the kitkat update which added the charging while ethernet is plugged in.
Click to expand...
Click to collapse
Did you plug all the devices in a particular order? I noticed that if I plug in my charger AFTER I plug in the OTG cable into the shield, then it is not charging. But when I plug in the charger into the OTG cable and then plug it into shield, it is charging.
Is your hub powered? What exact model is it? I am asking because I have very similar setup to yours but the shield does not detect USB devices connected to the hub - it's this one: http: // esperanza . pl/esperanza-usb-2-0-hub-4-porty-ea116,182,437.html
I can connect one usb device directly to OTG cable and it works, but when I connect a hub, it no longer works.
There is a cheap way to do this if you have the soldering skills, and are willing to try it.
Get a cheap USB "Travel" hub.
Open it up, and replace the Upstream USB cable with an OTG cable (A scrap Micro-USB cable may or may not work. The connector must be Properly wired for OTG).
Remove the main power diode in the USB hub, and solder jumper the 2 pads where it was. A Multimeter in continuity mode can help you find the right component, but it takes some experience. There usually is not much in a cheap travel hub, so I can usually find them just by looking, but like I say, only try this if you have the experience, and you know what you are looking for.
Power the hub through it's 5V power jack (if it has one), or you can add a power only micro-USB socket. (Only connect the (+) and (-) power pins, do not connect the data lines. Connect it to any one of the Full size USB port's power pins. Observe polarity.)
Voila! You now have 4 Full size USB ports, it will charge your device, and provide power (Up to the rated power of the AC adapter) for your USB devices.
I did this years ago in the Nokia 770 days. It was one of the first consumer devices that supported USB OTG. Article still exists here:
http://www.linuxslate.org/N770DockingStation.html (Scroll down to the "Electronic Components" Section)
Would this work?
Would this: SODIAL(R) Micro USB Host OTG Cable with Micro USB Power plus this: Anker® Unibody 3-Port USB 3.0 and Ethernet Hub
Give me the ability to charge tablet, use Ethernet and additionally connect USB mouse and keyboard, and possibly charge Nvidia Game Controller?
Or would it just be a waste of time and money
i like to use my nexus 5/7 to connect to my computer at home through VNC but it draws up quite a bit of power. Is it possible to have a OTG cable that'll connect to the MicroUSB port of the phone and then two cables come out, one that has female MicroUSB port to charge the phone, and a second cable that's a female USB port so I can connect a USB mouse to?
Thanks
tracerit said:
i like to use my nexus 5/7 to connect to my computer at home through VNC but it draws up quite a bit of power. Is it possible to have a OTG cable that'll connect to the MicroUSB port of the phone and then two cables come out, one that has female MicroUSB port to charge the phone, and a second cable that's a female USB port so I can connect a USB mouse to?
Thanks
Click to expand...
Click to collapse
I have not tried this myself but read on other devices that OTG Y cables will do what your asking.
http://www.amazon.com/Micro-Cable-Power-Nexus-Galaxy/dp/B00CXAC1ZW
Be warned that sometimes the specific device will not support concurrent charging. The cable link above specifically mentions the Nexus 7. Read the reviews.
Sent from my Nexus 10 using XDA Premium HD app
I have that cable, it does charge the phone but stick doesn't get mounted. I haven't tried to make it work or anything because I don't use it.
Greetings!
Hope this is the right place to post this. I've installed ElementalX kernel in hopes of charging my Nexus 7 (2013 - Android 6.0.1) while having USB devices plugged in (charge during or plugged in after). My ultimate goal is to have a USB accessory permanently plugged in (mouse, SD, whatever) and be able to plug in my charging cable whenever needed without unplugging the OTG cable.
When I was on stock, any USB device plugged in functioned normally (as expected). After going over to ElementalX, the USB port only recognizes charging and not devices, even if I'm not using charging and plug a mouse or thumbdrive directly in, it reads nothing anymore. I've tried plugging the charge cable in before and after plugging in the devices, nothing.
I've tried several OTG cables and adapters, USB devices, tried wireless charging + device, still the same issue persists. If I disable the OTG feature, the USB port works again for devices (just not simultaneously with charge of course).
I've tried various builds of ElementalX, Kangaroo, Glitch, anything that has Nexus 7 OTG+Charging support (haven't had luck installing Timur kernel without crashing). Not sure what I am doing wrong or if there is something I am missing.
Any help would be appreciated.
KITPUNK said:
...Not sure what I am doing wrong or if there is something I am missing.
Any help would be appreciated.
Click to expand...
Click to collapse
Hi, you write about "several" tested OTG cables and adapters but "OTG + charge" requires a specific Y-OTG cable with extra power connector. Do you really have so many of them? The only one I have and EX kernel with "OTG + charge" mode work flawlessly for me. Note on the attachments :
- "OTG + charge": ENABLED
- the charging icon: ON
- OTG mouse cursor: YES (internal screenshot does not capture cursors, hence a pic)
In case it has something to do with your system configuration, please do RESTOCK + addons where "Install ElementalX kernel?": YES and then select "OTG + charge" mode.
k23m said:
Hi, you write about "several" tested OTG cables and adapters but "OTG + charge" requires a specific Y-OTG cable with extra power connector. Do you really have so many of them? The only one I have and EX kernel with "OTG + charge" mode work flawlessly for me. Note on the attachments :
- "OTG + charge": ENABLED
- the charging icon: ON
- OTG mouse cursor: YES (internal screenshot does not capture cursors, hence a pic)
In case it has something to do with your system configuration, please do RESTOCK + addons where "Install ElementalX kernel?": YES and then select "OTG + charge" mode.
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Thanks for the reply,
I did the full RESTOCK with all the addons as you suggested, I enabled the OTG+Charge again and these are my test results:
"OTG+Charge = enabled" + Y-OTG + Mouse = Mouse does not work.
"OTG+Charge = disabled" + Y-OTG + Mouse = Mouse works.
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"OTG+Charge = enabled" + Y-OTG + Charger = Charger works.
"OTG+Charge = disabled" + Y-OTG + Charger = Charger does not work.
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"OTG+Charge = enabled" + Y-OTG + Mouse + Charger = Mouse and charger work! However, as soon as I unplug the charger, the mouse stops working. I also tried with a thumbdrive and it has the same results.
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I do have 3 OTG Y cables and an adapter that I have purchased from user recommendations in the ElementalX thread and from Reddit and they all yield the similar results.
I'm going to investigate other cables, maybe I just had bad luck with the ones I got? If you have had success with a particular cable, mind dropping a link?
KITPUNK said:
...I'm going to investigate other cables, maybe I just had bad luck with the ones I got? If you have had success with a particular cable, mind dropping a link?
Click to expand...
Click to collapse
I made the cable. I think all your Y-OTG cables, apart from power, also Y-split data lines which is counter-productive. If you use a PC USB port for power then the data lines will interfere with OTG mouse, flash drive, etc. If you use a smart QC charger for OTG power, the data lanes are active and OTG will not work. Even some dumb chargers would ruin OTG because they may short out both data lines to signal high charge current capability this way.
Here is a simple test for your Y-OTG cable with a mouse. Disconnect it from N7 and disregarding the micro-USB, connect the USB-A male into a PC port. If the mouse works it means data lines are Y-split too and you need a workaround. Find a non-QC charger, make a USB data-separating adapter or mod one of the Y-OTG cables by cutting off both data lines from the USB-A male plug.
The mod is really trivial, cut off the white and green cables...
EDIT to your edit...
""OTG+Charge = enabled" + Y-OTG + Mouse + Charger = Mouse and charger work! However, as soon as I unplug the charger, the mouse stops working. I also tried with a thumbdrive and it has the same results."
Well, this is the expected behavior, so there was nothing wrong all along
k23m said:
I made the cable. I think all your Y-OTG cables, apart from power, also Y-split data lines which is counter-productive. If you use a PC USB port for power then the data lines will interfere with OTG mouse, flash drive, etc. If you use a smart QC charger for OTG power, the data lanes are active and OTG will not work. Even some dumb chargers would ruin OTG because they may short out both data lines to signal high charge current capability this way.
Here is a simple test for your Y-OTG cable with a mouse. Disconnect it from N7 and disregarding the micro-USB, connect the USB-A male into a PC port. If the mouse works it means data lines are Y-split too and you need a workaround. Find a non-QC charger, make a USB data-separating adapter or mod one of the Y-OTG cables by cutting off both data lines from the USB-A male plug.
The mod is really trivial, cut off the white and green cables...
View attachment 5183599
EDIT to your edit...
""OTG+Charge = enabled" + Y-OTG + Mouse + Charger = Mouse and charger work! However, as soon as I unplug the charger, the mouse stops working. I also tried with a thumbdrive and it has the same results."
Well, this is the expected behavior, so there was nothing wrong all along
Click to expand...
Click to collapse
Is it expected that as soon as I unplug power from the OTG, it all disconnects though? Just seems contrary to everything I've seen online. I can plug in and mouse and it works, plug in power after and works. Unplug power and its all offline and I have to reset for it to work again.
I tested the cable on PC, doesn't move the mouse. I checked the power line and there is only a positive and negative line inside, no data lines.