[Guide] [ADV] Everything You Need to Know About USB OTG, aka USB Host Mode - Xoom Android Development

So...I've seen a whole bunch of confusion out there about USB Host Mode: Which cables work, which cables don't. I'm going to clear it all up for you right now.
So you know how USB cables have 4 wires/pins, right?
WRONG.
Micro (and some types of mini) have 5 pins. This is because of the host mode ability. However, most Micro cables have 4 wires. Pin 4 is empty, because it's just not needed in normal Micro USB cables.
Here's the breakdown of the pins:
1. Red - V+
2. White - Data -
3. Green - Data +
4. Something else (I've seen blue, brown, pink, you name it) - ID
5. Black - Ground
To achieve Host Mode capability, ID (Pin 4) needs to be shorted to Ground (5).
Pins 1-3 and 5 will always have the same color, but ID's color varies.
I can't seem to find anybody in the US who sells a decent host mode cable. VZW, yeah, but they over charge for it like everything else.
DIY-ing Your Own Hostmode Cable
Supplies:
MiniUSB Female to MicroUSB Male Adapter - This Motorola one has wires on all 5 pins.
Any old USB Extension Cord - All of them work. No difference on what kind you get.
Soldering Iron
Wire Stripper / Cutter
Solder
Heat-shrink
Directions:
1) Cut and strip the extension cable at the male end for extra length. Keep the female end.
2) Snip the mini-micro adapter at the female end, right in front of the plug, for the most length possible. Extra length helps with both physical strain on the Xoom's end, and it's always nice to have in case you screw something up. Remember, you can't uncut wires. :]
3) Next, match colors. Red to red, white to white, green to green, black to black.
3a) Twist each pair together, then add the odd colored wire (Pin 4) to the black pair.
3b) Solder each set together, shield it so as not to cause shorts (Heatshrink is ideal around each wire, but hard to do. Duct tape around each of the 4 small wires, then a large piece of heatshrink around the whole thing works as well.
4) You end up with a male MicroUSB-B to female USB-A cable that is host-capable. Test it by plugging your phone into Xoom! - Host cable into the Xoom, Normal micro cable into the female end of the host cable, other end of that into your phone.
You can ADB if you pull up a terminal. All ADB commands work. It's native to the Xoom. I'm guessing that it was meant to be used with ADB over wifi, or host mode was planned to be a built-in feature from the start.
Mounting Drives
Anybody who's had a past android device and has hacked it most likely saw the /dev/block path at some point.
Every device that I've had - Droid 1, Droid 2, Droid Incredible, Nook Color, Droid Eris - has device names in /dev/block. For example, the Droid 2's /system partition is at /dev/block/mmcblk1p21, and the Xoom's is at /dev/block/mmcblk1p8. To better illustrate, take the command to mount the /system partition as r/w.
Code:
mount -o rw,remount -t ext4 /dev/block/mmcblk1p8 /system
So...
Plug in your drive to the host cable, host cable into your Xoom. If your drive has a light, it should start flashing. If it's a portable Harddrive (think one of those WD or Seagate 500GB ones), it should start spinning up. I've found that the bigger the drive, the longer it takes the Xoom to see it.
Open a terminal, run the following command:
Code:
cd /dev/block
ls
You should see sda and sda1 or sdb and sdb1.
This is your drive.
>>For reference, mmcblk0 is your physical sdcard and mmcblk1 is your internal memory.
>>Also for reference, the Xoom outputs about 5V at 600mA from its USB port. Enough to give your phone some charge if it dies.
Anyway...to mount your usb host drive, run:
Code:
busybox mount /dev/block/sda1 /mnt/usbOTG
sda1 could be sdb1 or sdc1 - it looks like the Xoom keeps a record of what's attached, and increments the letter of the drive each time.
To unmount the usb host drive, it's
Code:
umount /mnt/usbOTG
And that's USB Host Mode in a nutshell. Get it? Shell?
Lemme know if you need clarification on anything.
Updates!
Thanks to Dinomight at his thread, we now have a tool that does most of this for us. Make sure you're running at least Tiamat 1.4.4.
ADB doesn't seem to work over USB with HTC phones. Motorola and LG should be fine, though. I tested with an Incredible and Thunderbolt.

This is awesome !
I've learned a lot ! Thanks mate !

I purchased http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250817547531#ht_4462wt_905 <---that and it works great for me.

Legacy2385 said:
I purchased http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250817547531#ht_4462wt_905 <---that and it works great for me.
Click to expand...
Click to collapse
Yeah, but this is faster.
Sent from my DROID2 using Tapatalk

My question was answered here: http://forum.xda-developers.com/showthread.php?t=1020174

bjarnia said:
My question was answered here: http://forum.xda-developers.com/showthread.php?t=1020174
Click to expand...
Click to collapse
What was the problem?
And yes, an app would be super-useful. Gscript might be able to do it.
Sent from my DROID2 using Tapatalk

Fantastic write-up. Thanks for this.

No problem...though it might be moot with the 3.1 update.
willverduzco said:
Fantastic write-up. Thanks for this.
Click to expand...
Click to collapse

3.1 doesn't support drives, does it?

bjarnia said:
My question was answered here: http://forum.xda-developers.com/showthread.php?t=1020174
Click to expand...
Click to collapse
just bought one.

siscim23 said:
3.1 doesn't support drives, does it?
Click to expand...
Click to collapse
Tested it. Supports cameras (ie DSLR) but not drives natively.

thanks!
Great job explaining OP! This is what I made using an USB extension cable (very short) and a micro USB to mini USB adapter. Ripped opened the adapter and soldered the wires based on instructions and put epoxy in it for permanent seal. Worked great with my camera....and keyboard, but not a flash drive as yet. But still an awesome tool!
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USB Ethernet for USB Tether from phone to Xoom
In the OP for the Tiamat kernel, BRD states that USB tethering has been implemented on 1.4.2.
I just made a USB host cable following this guide.
I also downloaded Gscript lite and tried to follow the few simple command steps in the referenced thread above. But.... nothing. It says, "Select a file ( .sh from sdcard )
Could someone be kind enough to explain to me how to set up/enable USB tethering from my rooted Droid Incredible (running CM7) to my rooted Xoom (HC 3.1, kernel 1.4.2, wireless only).
Thanks, in advance.

cam30era said:
In the OP for the Tiamat kernel, BRD states that USB tethering has been implemented on 1.4.2.
I just made a USB host cable following this guide.
I also downloaded Gscript lite and tried to follow the few simple command steps in the referenced thread above. But.... nothing. It says, "Select a file ( .sh from sdcard )
Could someone be kind enough to explain to me how to set up/enable USB tethering from my rooted Droid Incredible (running CM7) to my rooted Xoom (HC 3.1, kernel 1.4.2, wireless only).
Thanks, in advance.
Click to expand...
Click to collapse
I also would like to know how to do this
Xoomin' along with 1.6 ghz baby!

cam30era said:
In the OP for the Tiamat kernel, BRD states that USB tethering has been implemented on 1.4.2.
I just made a USB host cable following this guide.
I also downloaded Gscript lite and tried to follow the few simple command steps in the referenced thread above. But.... nothing. It says, "Select a file ( .sh from sdcard )
Could someone be kind enough to explain to me how to set up/enable USB tethering from my rooted Droid Incredible (running CM7) to my rooted Xoom (HC 3.1, kernel 1.4.2, wireless only).
Thanks, in advance.
Click to expand...
Click to collapse
After additional reading I understand that I needed to use a terminal emmulator instead of Gscript. After I type "ls " I don't see any external "sda " devices listed. Fwiw : my phone is charging when plugged in to my Xoom, but there is no indication on either device of a USB device plugged in. Input on what this noob is doing wrong would be appreciated.
Sent from my Xoom using Tapatalk

cam30era said:
After additional reading I understand that I needed to use a terminal emmulator instead of Gscript. After I type "ls " I don't see any external "sda " devices listed. Fwiw : my phone is charging when plugged in to my Xoom, but there is no indication on either device of a USB device plugged in. Input on what this noob is doing wrong would be appreciated.
Sent from my Xoom using Tapatalk
Click to expand...
Click to collapse
Okay...did you do ls /dev/block? That's where sda is. I'll write a script tonight.
Usb tethering has to be done from the phone side. Its meant for wifi xooms to get internet.
To get at your phone's storage, you have to enable usb mass storage from the phone.
Sent from my DROID2 using Tapatalk

oshigeru said:
Okay...did you do ls /dev/block? That's where sda is. I'll write a script tonight.
Usb tethering has to be done from the phone side. Its meant for wifi xooms to get internet.
To get at your phone's storage, you have to enable usb mass storage from the phone.
Sent from my DROID2 using Tapatalk
Click to expand...
Click to collapse
I typed :
CD /dev/block
Ls
(Exactly as written in OP)
I do see the SD card, internal storage, and a lot of other stuff. But no sda1, etc. It seems like the two devices don't recognize the USB connection? But I was very careful to follow your fabrication directions.
When I tried to enable USB tethering from my phone, it says "no USB device connected ".
Thanks for your help.
Sent from my Xoom using Tapatalk

oshigeru said:
To get at your phone's storage, you have to enable usb mass storage from the phone.
Click to expand...
Click to collapse
How do you do this from the phone? I probably won't use it much as I'm primarily interested in tethering, but it would be a good test, and learning experience for me.
Sent from my Xoom using Tapatalk

It is android, right? Then there should be something in the notification bar. Try doing "adb devices" in terminal on the xoom while your phone is plugged in. Take a picture?
Host cable is plugged in to the xoom, right? Not the phone?
Sent from my DROID2 using Tapatalk

oshigeru said:
It is android, right? Then there should be something in the notification bar. Try doing "adb devices" in terminal on the xoom while your phone is plugged in. Take a picture?
Host cable is plugged in to the xoom, right? Not the phone?
Sent from my DROID2 using Tapatalk
Click to expand...
Click to collapse
Yes, Android. Droid Incredible running Cyanogenmod 7.
There are no USB notifications in address bar on either device. But phone is charging.
ADB devices shows nothing when phone plugged in.
Host cable is plugged in to Xoom.
Don't know how to take a screen shot. :-(
Sent from my Xoom using Tapatalk

Related

OTG + charge project. Charge phone while using FLASH DRIVE

Just want to know for something like, connect a external storage and the other usb to charge the phone or something else and still have the other one to charge the phone.
Thanks
EDIT:
Well since this is getting into a project. I will be adding the info here.​
New thread: http://forum.xda-developers.com/showthread.php?p=32618626#post32618626
New info
highvista said:
It looks like it works! Both the phone and my 64GB flash drive are being powered via a USB charger connected to a Y-cable. As far as I can tell, the phone battery isn't being charged and may still be draining a bit--this may depend on the current delivered by the USB charger. But I've been playing music for hours from an attached USB flash drive with my screen on and the battery level is still sitting at 98%.
I've attached ZIP files with a boot image containing the kernel. The yakju boot image was created by replacing the stock kernel in a Nandroid boot image obtained from the Galaxy Nexus described in my sig. The other boot images were created from the boot image included with the Google factory ROM. I can't test these, so use with caution. NOTE!!! Make sure you do a Nandroid backup of your phone before trying out the attached boot images. Things can go wrong and you want to be able to recover.
This was posted earlier in the thread, but credits for the kernel code tweak, along with details, go to the contributor to this thread
http://rootzwiki.com/topic/30615-can-you-charge-usb-host-mode-simultaneously/
Have fun!
10/09/12:
I've added two more ZIP files. These contain boot images with the code modded such that the phone battery is charged when using the Y-cable. NOTE: The phone will think it is being charged any time a USB OTG cable is connected. I haven't figured out a way around this yet. This doesn't really hurt anything, except if you have your phone set to stay on when charging, you could end up running down your battery! Important safety tip.
10/15/12:
I've replaced the previous ZIP files with two new ones. These contain boot images for takju and yakju JRO03C/4.1.1 that provide USB OTG+charging, with the added benefit that you can still use a standard USB OTG cable to connect an external device. As in the stock kernel, the phone will provide power for the external device. In other words, the new kernel in the ZIP archives auto-detects if there is a charger attached via a y-cable and uses it to power the external device and charge the phone, if it's found.
I've also fixed the problem where the phone would show a charging icon in the notification bar if a USB OTG cable was attached without any external device connected to it.
NOTE: THESE ZIP FILES ARE NOT MEANT TO BE FLASHED TO YOUR PHONE. These files contain a file called boot.img that can be flashed to your rooted phone from your computer via ADB with the commands
fastboot flash boot /path/to/<boot>.img
fastboot reboot
You can learn more about using fastboot at http://wiki.cyanogenmod.org/wiki/Fastboot.
12/28/12:
Version V4 is replacing V3. This new version fixes the bug where detaching external power from the USB OTG y-cable or USB hub wasn't detected by the phone. Now, when power is detached, the phone switches to battery power, including supplying battery power to any attached USB devices.
Note that the reverse is not true. If you connect external power when the phone and external USB devices are being powered by battery, the phone will continue to use battery power. The external power is not detected. When in doubt, disconnect and reconnect the USB OTG cable to cause the phone to recognize what's attached.
-----------------------------
12/28/12:
Version V4 is replacing V3. This new version fixes the bug where detaching external power from the USB OTG y-cable or USB hub wasn't detected by the phone. Now, when power is detached, the phone switches to battery power, including supplying battery power to any attached USB devices.
Note that the reverse is not true. If you connect external power when the phone and external USB devices are being powered by battery, the phone will continue to use battery power. The external power is not detected. When in doubt, disconnect and reconnect the USB OTG cable to cause the phone to recognize what's attached.
Click to expand...
Click to collapse
Rotary Heart said:
Just want to know for something like, connect a external storage and the other usb to charge the phone or something else and still have the other one to charge the phone.
Thanks
Click to expand...
Click to collapse
No one knows? what about a usb hub?
Its, like something else.
Sent from my Galaxy Nexus using Tapatalk 2
android01 said:
Its, like something else.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
What does that means?
Rotary Heart said:
Just want to know for something like, connect a external storage and the other usb to charge the phone or something else and still have the other one to charge the phone.
Thanks
Click to expand...
Click to collapse
I believe he is making a reference to your op
I don't understand what op is asking.
Sent from my Galaxy Nexus using xda app-developers app
I think he is wanting to somehow daisy chain the devices having power from the first one provide enough charge current for the last one. Least that is what im thinking he said i dunno though
Ok let me explain it a bit better. Lets say I have a flash drive (external storage, external hard drive, whatever you want to call it) I connect it to my phone with a usb to micro usb adapter. Now I have my ONLY micro usb connector in use, but after a while I'm running out of battery so I want to charge my phone BUT I can't since I can't remove my flash drive (because I'm using it).
Now I'm asking for an adapter or something that can let me connect my flash drive and still be able to charge my phone. like a 2 usb to 1 usb adapter for PC. Or like the adapter to connect 2 headphones in one headphone port.
I hope it's clear enough now. :laugh:
http://www.monoprice.com/mobile/Pro...Id=103&categoryId=10303&subCategoryId=1030303
Connect that to a powered hub, plug flash drive into one of the hub ports. That should work, though i don't use usb otg, so i couldn't say for sure.
Rotary Heart said:
Ok let me explain it a bit better. Lets say I have a flash drive (external storage, external hard drive, whatever you want to call it) I connect it to my phone with a usb to micro usb adapter. Now I have my ONLY micro usb connector in use, but after a while I'm running out of battery so I want to charge my phone BUT I can't since I can't remove my flash drive (because I'm using it).
Now I'm asking for an adapter or something that can let me connect my flash drive and still be able to charge my phone. like a 2 usb to 1 usb adapter for PC. Or like the adapter to connect 2 headphones in one headphone port.
I hope it's clear enough now. :laugh:
Click to expand...
Click to collapse
This is the closest thing i could find.
ttabbal said:
http://www.monoprice.com/mobile/Pro...Id=103&categoryId=10303&subCategoryId=1030303
Connect that to a powered hub, plug flash drive into one of the hub ports. That should work, though i don't use usb otg, so i couldn't say for sure.
Click to expand...
Click to collapse
I thought about this one, maybe I will give it a try. I hope it works.
Thanks
Rotary Heart said:
Ok let me explain it a bit better. Lets say I have a flash drive (external storage, external hard drive, whatever you want to call it) I connect it to my phone with a usb to micro usb adapter. Now I have my ONLY micro usb connector in use, but after a while I'm running out of battery so I want to charge my phone BUT I can't since I can't remove my flash drive (because I'm using it).
Now I'm asking for an adapter or something that can let me connect my flash drive and still be able to charge my phone. like a 2 usb to 1 usb adapter for PC. Or like the adapter to connect 2 headphones in one headphone port.
Click to expand...
Click to collapse
Unfortunately, the answer is no. I've tried several ways to get this to work, with no success. I routinely mount a flash drive using a USB OTG cable and the Stickmount app in order to listen to my music collection. It works great, but USB OTG drains the phone battery rather quickly.
I even cut out a notch on my desktop dock so I could attach the flash drive while trying to charge the phone via the dock's pogo pins. Here's a thread discussing this:
http://forum.xda-developers.com/showthread.php?t=1651757
The USB standard does provide for a method of charging while using USB OTG via a device called an Accessory Charger Adapter. But I haven't found such a device available anywhere.
Sorry to be the bearer of bad news. If you do happen to find another solution, do let us know.
I don't think I have the bits needed to try it, but looking through the spec, I think you can simulate the requirements for the ACA.
Connect a 124K resistor from ID to GND on the micro side. That should tell the OTG host (the phone) to go to Charge/Host mode allowing the B device (memory stick etc) to work AND allowing the phone to charge... You will need to provide a decent 5V power connection. You need to power both the phone and the accessory device from this.
ttabbal said:
I don't think I have the bits needed to try it, but looking through the spec, I think you can simulate the requirements for the ACA.
Connect a 124K resistor from ID to GND on the micro side. That should tell the OTG host (the phone) to go to Charge/Host mode allowing the B device (memory stick etc) to work AND allowing the phone to charge... You will need to provide a decent 5V power connection. You need to power both the phone and the accessory device from this.
Click to expand...
Click to collapse
Ok I understand the resistor and where to connect it, but where I will connect the power source? if the memory stick is using the micro usb port?
Rotary Heart said:
Ok I understand the resistor and where to connect it, but where I will connect the power source? if the memory stick is using the micro usb port?
Click to expand...
Click to collapse
Powered hub. Or otherwise connect to the power lines..
ttabbal said:
Powered hub. Or otherwise connect to the power lines..
Click to expand...
Click to collapse
Ok thanks I will try this one and when I have it done will update the thread.
Rotary Heart said:
Ok thanks I will try this one and when I have it done will update the thread.
Click to expand...
Click to collapse
So? You tried that out? it worked?
caioketo said:
So? You tried that out? it worked?
Click to expand...
Click to collapse
I'm waiting to receive my powered hub... So will let you know.
I'm about to do this too, so if I got mine first, i update here. =D
And it should work, couse it will be the same in specification, so teorically it will work!
caioketo said:
I'm about to do this too, so if I got mine first, i update here. =D
And it should work, couse it will be the same in specification, so teorically it will work!
Click to expand...
Click to collapse
If you got it to work I will love to see it . Mine still on its way home...

[Discussion] Working OTG Devices

***EDIT***
USB Host DOES work with Flash Drives. For information see post 3: http://forum.xda-developers.com/showthread.php?p=37201971#post37201971
This is now my main focus. So I figure why not everyone post up what devices they got to work with the Kindle Fire 2 and/or what methods it took for you to do so.
3x Different Flash Drives: Not Working However one of their LED's Illuminate
USB Keyboard: Not Working
Logitech M570 Wireless Trackball: Working
I also tried a non powered hub, it didn't work. The Green LED Illuminated but nothing more. When connected to my Galaxy S 3 I can have multiple devices attached at a time. I tore the Hub down and found that it has a blank slot for power. I wired soldered in a 0.75a Samsung Wired Charger to it. It Illuminated the LED, As well as it illuminated the Power LED in Orange on the Kindle but no devices worked on the Hub. I tested the power output of the USB Ports and it was a little more than 5v per port.
Device: Kindle Fire 2
Rooted and TWRP'ed with the Nightly of CM10.1 1-20-2013
Will keep trying. As stated in another thread, that its simply power. After testing these things out, I don't think its power related. Either the kindle just doesn't have the "Drivers" if thats what you'd call it, or it simply can not run anything but a mouse. I hope that is not the case. It will ruin all appeal in my eyes.
If you're rooted, have you tried installing StickMount?
Might work for the flash drives.
I tried, Stickmount tries. You can tell its trying to work something out. So more tests with a cut up usb cable on the OTG cable does in fact show there is a voltage issue. My Galaxy puts out perfect 5v. The Kindle puts out around 2.5v. I tried making another OTG cable but failed. I guess its just not getting connection to the extra pin. So I have a USB Extension I'm gonna split open and power it. So I don't have to hack up my only working OTG.
The main issue I'm having with this is, my current power unit is a measly 0.75a. And It charges the device. So I figure there will still be a voltage issue due to the device charging. So I could cut the red wire going to the device for now. But not sure if the device will realize this somehow and just not work. Thoughts? I've seen this done before when someone made themselves a powered OTG Hub system out of a couple USB Cables.
I'll continue till I'm too tired to think hehe.
***Edit***
Ok couple hours later.... lol I had a USB Extension, I cleanly just slit it down the m iddle and soldered in the two power wires from a samsung micro usb charger. The Power is 5v at 0.75a. So its not much. I know it wouldn't charge my nexus nor Galaxy Tab, but it charges the Kindle, or at least the kindle says it is. I doubt it really is. Anyway I soldered it in, cleaned up the surgery started some testing on my phone first. I connected a Micro USB cable to one end and then the other to my phone, and then the Kindle. It charges, or again says it is (*kindle might require more amperage). So Next I connect the OTG Cable to the other end and connect it to my phone, It charges through the OTG Cable. Next the Kindle, it does not charge the kindle. Possible amperage requirements, I don't know yet.
So onto the test without StickMount, Failure. It acts the same.
Test with StickMount, Well I'll let this screen shot explain most of it:
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It worked! StickMount notification pops up and I found the flash drive in the current location. Inside the SD Card under a folder called /usbstorage/sda1/. Not exactly my first choice, not sure if this can be changed to go into mnt or somewhere else. The Device itself doesn't notice the flash drive. So if you go into System/Storage, it does not show the flash drive. But it is fully functional. I accessed some files without any issues.
So my final consensus: The Kindle Fire 2 currently has OTG/USB Host Capabilities. From the USB Host Diagnostics I ran, its fully functional. However the main issue is Power. The second issue is the device on the most current (1/20/2013 CM10.1 Nightly) rom doesn't have the proper... I don't know the right wording for it, but lets say drivers since I'm a pc guy. I'm sure with more development, it can control any device with the only issue being power related. This takes away from the meaning of "On The Go". Having some sort of 5v power source connected to your device while your trying to use a hard drive or something else is going to be a pain in the ass for most people. For me it really does not matter since the device is going to be setup in my car for media sourcing as well as game play. So a 32gb flash drive and a Xbox 360 controller is all I will be using.
I will be doing more testing with multiple devices but it is 4am right now. One more thing, Bluetooth abilities are possible with a cheap dongle. However for some reason the Kindle recognizes it as a physical keyboard. I have tested this on other devices in the past so I believe it is possible with some more development. But that's far in the future and still of course require additional power.
Goodnight guys.
I have 3 different thumb drives.
Sony 4GB = does not work
SanDisk cruzer slide 16GB = does not work
SanDisk cruzer 8GB = Works
The regular cruzer is probably 5+ years old. I have access to others and will update my post when I get them.
I'm on PowerPoint45 cm 10.1 using chainfires stickmount.
Sent from my Nexus 7 using Tapatalk HD
Nice. The regular flash prob requires less power. I noticed one of mine which was larger almost worked. But would shut off prob to not enough power. But a newer one wouldn't light up at all.
Plans for today: To re build that USB Hub I was messing with last night. I desoldered the USB cable off of it to solder in a Micro USB, But I don't remember if it worked. I then tried to turn it into an OTG direct 4port hub but nothing happened. So I'm sure I screwed something up. But the initial results should be a powered, 4port Micro USB OTG Hub. I just hope I have enough juice to make it work for not only charging the Kindle but powering the devices on the hub. I have a Galaxy Tab Official 2.0a car charger I can try out. I want to be able to have at the least, a 32gb Flash Drive and a 360 Gaming Controller.
Well I got some done today. I found an old phone charger that was 1a. I finally just used my OTG Cable and soldered it in place of the std usb connector on a cheap USB Hub. I'm sure everyone has the same hub I'm using, I have two, one says Microsoft on it, the other says AMD but they are super cheap and are given out everywhere you go:
Its a non powered USB hub, however when opened up there is a bare spot for a power connector. Middle pin is 5v + and the two around it are common Ground -.
Don't be strayed by my crap solder work. I'm using a cheap harbor freight soldering iron and the new charger has very thick wire so it didn't really fit in the small holes. The ground is just directly connected to everything else thats ground related so I grounded it there. That way the two wires aren't soo close together.
I have now successfully tested 3 flash drives, NTFS, Fat32 and some strange Fat32 drive plus my Trackball. As well as this I have successfully charged my Galaxy SIII off of the hub. I wouldn't exactly recommend this unless your running like a legit 2a charger. I only did it to test out power requirements. I think either my cable is damaged too or I'm at the limit of power the small 1a can handle because every once in a while the hub shuts off. I think its just cable related.
Here is everything connected as you can see.
However the tablet it self is not charging. At least the icon on the notification bar doesn't say so. I have tested the voltage here and its 5v. But IDK? Maybe the Kindle wont allow it? BUT, with all my testing, the battery has stayed at 88%. I'm gonna try to kill it some more. Maybe with some transferring files between drives.
lol As I'm typing this, I sit down for a second with the tablet on the carpet floor and just stare at it. I've noticed that some reason the led turns off and on at random times. But I've never seen it say its charging. Well the screen just dimmed but didn't shut off so I get up to check real fast and when I turn it on, it says 88% - Charging! But then instantly goes back to 88% - Not Charging when the screen lights up. And there it goes again (Please bare with me as I'm doing this all this very second.) Looks like it just needs some more amperage. 1a is not enough to power everything and charge the device.
I was worried that the kindle wasn't going to support Charging OTG. Well I happen to have a spare 2a Galaxy Tablet charger and no Galaxy Tab.... I'll try it out and get back to you guys!
nFiniti said:
Well I got some done today. I found an old phone charger that was 1a. I finally just used my OTG Cable and soldered it in place of the std usb connector on a cheap USB Hub. I'm sure everyone has the same hub I'm using, I have two, one says Microsoft on it, the other says AMD but they are super cheap and are given out everywhere you go:
Its a non powered USB hub, however when opened up there is a bare spot for a power connector. Middle pin is 5v + and the two around it are common Ground -.
Don't be strayed by my crap solder work. I'm using a cheap harbor freight soldering iron and the new charger has very thick wire so it didn't really fit in the small holes. The ground is just directly connected to everything else thats ground related so I grounded it there. That way the two wires aren't soo close together.
I have now successfully tested 3 flash drives, NTFS, Fat32 and some strange Fat32 drive plus my Trackball. As well as this I have successfully charged my Galaxy SIII off of the hub. I wouldn't exactly recommend this unless your running like a legit 2a charger. I only did it to test out power requirements. I think either my cable is damaged too or I'm at the limit of power the small 1a can handle because every once in a while the hub shuts off. I think its just cable related.
Here is everything connected as you can see.
*PIC REMOVED BY ME BECAUSE CMON, IT'S A QUOTE, YOU'VE SEEN THE PIC ALREADY!*
However the tablet it self is not charging. At least the icon on the notification bar doesn't say so. I have tested the voltage here and its 5v. But IDK? Maybe the Kindle wont allow it? BUT, with all my testing, the battery has stayed at 88%. I'm gonna try to kill it some more. Maybe with some transferring files between drives.
lol As I'm typing this, I sit down for a second with the tablet on the carpet floor and just stare at it. I've noticed that some reason the led turns off and on at random times. But I've never seen it say its charging. Well the screen just dimmed but didn't shut off so I get up to check real fast and when I turn it on, it says 88% - Charging! But then instantly goes back to 88% - Not Charging when the screen lights up. And there it goes again (Please bare with me as I'm doing this all this very second.) Looks like it just needs some more amperage. 1a is not enough to power everything and charge the device.
I was worried that the kindle wasn't going to support Charging OTG. Well I happen to have a spare 2a Galaxy Tablet charger and no Galaxy Tab.... I'll try it out and get back to you guys!
Click to expand...
Click to collapse
This looks good! If you want, once you are done with the testing, I can try and write up a guide with your words on how to do it then let you post that. I did the same for some of the stickied threads. It looks like you're almost done and I think this would be a really good info thread once compiled nicely. Stuff like how to do OTG, what works, what needs a powered HUB, stuff like that. I personally will probably never use OTG, but I see the value and I like what it can be used for.
Best of luck!
That's nice. lol I understand I talk a lot, but when it comes to things I must have, like more than 5gb of memory on a device that should have a few TB . It would be nice for others to try out things to see what works and what doesn't. Because to have a powered USB Device is kinda not the point of OTG "On The Go". But like someone figured out that one of his older Flash drives worked, so hopefully others chime in too.
If you wanna do that, you have my approval. Just make sure it suits what I did, "Dedicated OTG". or "Guaranteed OTG". Since that's what I was mainly working towards. This discussion thread is mainly to locate what works and what doesn't and the main OTG Capabilities of the Kindle Fire2. I don't plan on changing much else to what I have already done except adding a larger psu to the hub so it charges the device while powering the hub and its devices for my own personal gain. I want to keep this open so people can throw up what they have learned as well so the information is out there for others. I personally hate going into a device and not knowing.
nFiniti said:
That's nice. lol I understand I talk a lot, but when it comes to things I must have, like more than 5gb of memory on a device that should have a few TB . It would be nice for others to try out things to see what works and what doesn't. Because to have a powered USB Device is kinda not the point of OTG "On The Go". But like someone figured out that one of his older Flash drives worked, so hopefully others chime in too.
If you wanna do that, you have my approval. Just make sure it suits what I did, "Dedicated OTG". or "Guaranteed OTG". Since that's what I was mainly working towards. This discussion thread is mainly to locate what works and what doesn't and the main OTG Capabilities of the Kindle Fire2. I don't plan on changing much else to what I have already done except adding a larger psu to the hub so it charges the device while powering the hub and its devices for my own personal gain. I want to keep this open so people can throw up what they have learned as well so the information is out there for others. I personally hate going into a device and not knowing.
Click to expand...
Click to collapse
I should get an OTG cable. I have a small flashdrive, not sure about the name or brand since the size made it temporarily misplaced. It's the same size as the wireless receivers though for most modern mice and keyboard so it's SUPER small, which I actually wouldn't mind tucking the cable into my case, plus it's 32GB. The issue on PC, is the transfer rate is a little low, but that may be because it uses so little power, which I'm hoping.
Any good places to get an OTG cable?
Ebay, Amazon (great place for cables)
https://www.google.com/search?q=OTG...29,d.aWc&fp=4a19662fa4882be9&biw=1920&bih=965
Just a quick search. You can also make one, if space is an issue. You just need a MicroUSB and a female USB. Pin 5 gets soldered to pin 4 on the MicroUSB and bam! Making one would help with space issues since you can tuck the wires easier. If you are good at soldering.
nFiniti said:
Ebay, Amazon (great place for cables)
https://www.google.com/search?q=OTG...29,d.aWc&fp=4a19662fa4882be9&biw=1920&bih=965
Just a quick search. You can also make one, if space is an issue. You just need a MicroUSB and a female USB. Pin 5 gets soldered to pin 4 on the MicroUSB and bam! Making one would help with space issues since you can tuck the wires easier. If you are good at soldering.
Click to expand...
Click to collapse
Is an OTG cable special or just F-USB and M-MicoUSB?
If it's just those, then I can go poke around Frys and Radioshack for one.
I don't know anything about soldering, how much is a good kit to get started? I think a friend of mine has one and knows how to use it, so I can ask him, but I realize it's something I should learn especially with the hardware mods I would love to do. If I can't find a cable in stores, or if it's special (I ask that because most employees at frys and whatnot aren't very helpful or knowledgable, so I don't want them giving me something that won't work, but if it's just those ends I'm looking for, I can do that) then I may just look into soldering my own and learning that. I see they're around $50 online but I don't want to screw myself over there.
You can chose a decent soldering iron anywhere from 15 to like 80 bucks. I recently saw some nice ones with adjustable power levels for good price. And tons of different tips. My brother Skorpn has the more expensive one that heats up fast and has adjustable power settings to fit any projects needs. Hr has a nice soldering station I wish I could use more. I however just have a cheap harbor freight iron with a fine tip from radio shack and I use the thinnest silver solder avail there as well. Flux is also a must.
Anyway. Otg mode is accomplished on the micro USB side. They have 5 pins instead of 4. The 5th is used for doing all sorts of things with the right add one tho. If you solder in a small wire to it and jump it to pin 4 which is ground, it turns on otg. Not really hard to do. You can make one decently. Just need a good micro USB cable and a female normal USB cable. Solder them together and then do the otg modifications.
Other than doing it yourself, they are very cheap. But if you have the spare cables, it doesn't hurt to play around.
Sent from my Amazon Kindle Fire2 using xda app-developers app
I've got my USB mouse to work using otg cable, is there any chance using it could damage my kindle, this Mount app I use says it can damage the kindle because of the power output
Sent from my Amazon Kindle Fire2
I don't know what ap your talking about. But no. The Kindle Fire 2 only puts out half the voltage when in OTG Mode. So only certain things will work without additional power. Your mouse will work just fine, especially if its a wireless mouse, since the wireless device doesn't require hardly any power. Some other devices will work too. You don't need a mount app for using devices, only for Flash Drives. And so far out of every one I've used the best one is Chainfire's StickMount. Chainfire is the creator of Superuser.
Anyways, I'm not using a 2a charger to power my USB OTG Hub, and it powers all 4 devices and charges the device with ease. Cannot wait to have this thing installed.
OTG testing
After reading this thread I thought I would have a go and do some testing myself. so I found a USB y cable teamed that with a female to female USB adaptor so it would extend my OTG cable but allow me to pipe in some power (5v off a arduino) off the y cable. I have got my mouse working and USB flash drive but I cant get my Xbox 360 wired controller to work
facelessloser said:
After reading this thread I thought I would have a go and do some testing myself. so I found a USB y cable teamed that with a female to female USB adaptor so it would extend my OTG cable but allow me to pipe in some power (5v off a arduino) off the y cable. I have got my mouse working and USB flash drive but I cant get my Xbox 360 wired controller to work
Click to expand...
Click to collapse
You know the amperage of the power source you are using? It might just be not enough power. Because the device itself will take from it also. Its pretty much splitting it. Which is why I went with a legit Galaxy Tab 2a charger since its one of the most powerful chargers I've come across. I hope it works. Since bluetooth doesn't work on the OTG yet, I need the 360 controller to work. I will be trying a wireless controller and one of those Microsoft adapters soon. Hopefully it works! I'd love to play some video games in the car
nFiniti said:
You know the amperage of the power source you are using? It might just be not enough power. Because the device itself will take from it also. Its pretty much splitting it. Which is why I went with a legit Galaxy Tab 2a charger since its one of the most powerful chargers I've come across. I hope it works. Since bluetooth doesn't work on the OTG yet, I need the 360 controller to work. I will be trying a wireless controller and one of those Microsoft adapters soon. Hopefully it works! I'd love to play some video games in the car
Click to expand...
Click to collapse
You have a good point there, I haven't tested the amperage that comes out of a arduino but I don't think it would be much. I could try and hock up a iPad charger which I think is 2amp.
---------- Post added at 11:08 AM ---------- Previous post was at 10:34 AM ----------
facelessloser said:
You have a good point there, I haven't tested the amperage that comes out of a arduino but I don't think it would be much. I could try and hock up a iPad charger which I think is 2amp.
Click to expand...
Click to collapse
I have just tested the Xbox 360 controller being powered from a iPad charging plug and now joy. It lights up but then goes off
I'm making my own otg cable tonight if the spare usb cable I found works for data and not just charging. Basically I have a female usb port on a cable that I used to splice in with an original Xbox controller plug to be able to use usb sticks as memory cards for my Xbox to be able to install gentoo Linux on my Xbox (original Xbox controllers are usb 1.0 with a proprietary plug type) so I know the female port works fine for data transfers.
Eventually I'll buy some plugs to solder onto both the usb and Xbox cables so I can yank the female plug from the otg cable and snap it right onto the Xbox plug instead of having to constantly re-splice them or buy a new usb extension cable for the female end/buy a pre made otg cable.
Sent from my Vivid 4G using xda app-developers app
---------- Post added at 12:30 AM ---------- Previous post was at 12:27 AM ----------
Oh yeah, the point to my post was that I have three usb hubs, two powered one not, and a ton of stuff to test with my kf2 like a billion usb keyboards, mice, storage devices, and the one I REALLY want to get working, my afterglow Xbox 360 controller for minecraft pocket edition
Sent from my Vivid 4G using xda app-developers app
Support any KF2 ROM Bluetooth Dongles ? (to use BT headset)
avathor said:
Support any KF2 ROM Bluetooth Dongles ? (to use BT headset)
Click to expand...
Click to collapse
IDK how thats going. I don't think anyone is working on it since the KF2 doesn't have bluetooth to begin with. When I connect my cheapo BT Dongle, it doesn't allow me to turn the switch to on. However it does see the BT Dongle and thinks its a keyboard of some sort. Which would be nice because I have a really nice BT Keyboard for Android I wanna use.
Also would be nice to use PS3 Controllers. I'm going to attempt the wireless 360 controller with the adapter one of these days, whenever I can focus some cash in that direction. I really want a wireless 360 controller on my KF2 so I can play some of the higher end games as well as the older Emulated games. Just think its too cool

Archos USB cable (internal) not attached

So I bought this Archos 80 G9 refurb'd and I opend the tablet only to find out the cable wasn't screwed in. I screwed it in, but now I get no power to the port, or at least it seems. I've been trying to get my wired 360 controller to work (before I screwed it in, it would give brief power then stop giving it) it doesn't give any now.
First image is how the cable was, second is of me typing dmesg | tail to see if the controller is being connected before I screwed the cable in. Now the controller never lights up and dmesg | tail returns nothing about the port .
I'm running PA 3+ 4.2.2 btw
Any ideas?
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EDIT: After a reboot, it lit up for a few again, but not working.... Again.
Sent from my ARCHOS 80G9 using Tapatalk HD
Just tried a USB stick (microSD adapter) with 4gb in it, still nothing
Sent from my ARCHOS 80G9 using Tapatalk HD
I have gotten that same message with a few of my USB items. I think it has something to do with the archos not being compatible with older usb devices? If you have a USB hub try plugging that into the archos and your controller into the hub.
Djirin said:
I have gotten that same message with a few of my USB items. I think it has something to do with the archos not being compatible with older usb devices? If you have a USB hub try plugging that into the archos and your controller into the hub.
Click to expand...
Click to collapse
No USB hub . The X360 controllers not that old though. Also, I don't get msgs related to the USB anymore since I screwed that cable back in. I would assume that cable is the ground, so i don't see how it'd make the port stop working, totally at a loss . I use my friends compute for flashing stuff, hopefully tomorrow i can flash an official firmware and test again.
Sent from my ARCHOS 80G9 using Tapatalk HD
Bump, anyone else with suggestions or an idea on the cable inside?
Sent from my ARCHOS 80G9 using Tapatalk HD
MDMonster said:
Bump, anyone else with suggestions or an idea on the cable inside?
Sent from my ARCHOS 80G9 using Tapatalk HD
Click to expand...
Click to collapse
This is a known problem with the G9 series. Since the USB port slides out, it's connected to the main board with the flexible ribbon cable. This ribbon cable can develop tiny cracks in the connections very fast. This is what probably happened to your G9.
Try searching the forum, because there is a proposed permanent solution explained with pictures. You would need to find a suitable ribbon cable from an optical drive and alter it slightly to replace the original cable. Also, fixing the position of the full USB port so it does not move out also helps.
Just to make sure: You did this after booting?
Code:
echo "1" >/sys/class/rfkill/rfkill0/state
neur0mans3r said:
This is a known problem with the G9 series. Since the USB port slides out, it's connected to the main board with the flexible ribbon cable. This ribbon cable can develop tiny cracks in the connections very fast. This is what probably happened to your G9.
Try searching the forum, because there is a proposed permanent solution explained with pictures. You would need to find a suitable ribbon cable from an optical drive and alter it slightly to replace the original cable. Also, fixing the position of the full USB port so it does not move out also helps.
Click to expand...
Click to collapse
Well I didn't see any form of cracking on the cable when I opened the bugger up
I'll double check though in a few. I'm restoring apps atm, Just got back onto ICS.
Quallenauge said:
Just to make sure: You did this after booting?
Code:
echo "1" >/sys/class/rfkill/rfkill0/state
Click to expand...
Click to collapse
Yes, everytime I wanted to test it after a reboot
MDMonster said:
I've been trying to get my wired 360 controller to work (before I screwed it in, it would give brief power then stop giving it) it doesn't give any now.
Click to expand...
Click to collapse
It is my understanding that the Xbox 360 controller only works with a USB Host (or OTG) cable connected to the microUSB connector. It does not work with the full size USB port on the back (or at least it never has on any of my G9 tablets when I tried connecting it that port).
---------- Post added at 06:07 PM ---------- Previous post was at 05:46 PM ----------
MDMonster said:
So I bought this Archos 80 G9 refurb'd and...
Click to expand...
Click to collapse
The picture you posted does not even look right for the inside of an Archos 80 G9 to me. Or, at least not like any other pictures I've seen of inside of one. The speaker should be further over, not right next to the USB connections.
But, then again, Archos has changed how the G9 models were built several times. Maybe you got a really old one?
55mls said:
It is my understanding that the Xbox 360 controller only works with a USB Host (or OTG) cable connected to the microUSB connector. It does not work with the full size USB port on the back (or at least it never has on any of my G9 tablets when I tried connecting it that port).
---------- Post added at 06:07 PM ---------- Previous post was at 05:46 PM ----------
The picture you posted does not even look right for the inside of an Archos 80 G9 to me. Or, at least not like any other pictures I've seen of inside of one. The speaker should be further over, not right next to the USB connections.
But, then again, Archos has changed how the G9 models were built several times. Maybe you got a really old one?
Click to expand...
Click to collapse
That's possible
I tested the port with my phone, plugged it into the port and it does work fine, but that's all I've gotten to work, storage devices. Are those all that work other than the obvious 3g sticks? Also, I found out an android device needs the ffmes.ko or whatever and xpad.ko for an X360 controller to work... I looked, but never found them on this device, maybe that's why it doesn't work on that port, just guessing
Sent from my ARCHOS 80G9 using Tapatalk HD
Mine seems to be fine.
I've used it with an Apple mini Keyboard. It works directly plugged into the full size port (with a slight angle and some stress on the connector), and it works with a micro-USB OTG adapter cable in the micro USB port, too.
100% plug and play in both cases. (I did turn on 3G in settings)
If my flex cable cracks, or if I open the case again for any reason, here is what I intend to do:
1. Cut a rectangular hole in the outside edge of the slide cover. Remove material as needed.
2. Remove the full size USB socket, or obtain another full-size USB connector, and epoxy it into the slide cover.
3. Point-to-point wire 4 wires (I guess I need a shield, too) from the motherboard to the connector in the slide cover.
4. Super-glue the side cover in place.
The left edge of my 80 G9 will then have all of the connectors at the edge, like it should have in the first place.
Linuxslate said:
Mine seems to be fine.
I've used it with an Apple mini Keyboard. It works directly plugged into the full size port (with a slight angle and some stress on the connector), and it works with a micro-USB OTG adapter cable in the micro USB port, too.
100% plug and play in both cases. (I did turn on 3G in settings)
If my flex cable cracks, or if I open the case again for any reason, here is what I intend to do:
1. Cut a rectangular hole in the outside edge of the slide cover. Remove material as needed.
2. Remove the full size USB socket, or obtain another full-size USB connector, and epoxy it into the slide cover.
3. Point-to-point wire 4 wires (I guess I need a shield, too) from the motherboard to the connector in the slide cover.
4. Super-glue the side cover in place.
The left edge of my 80 G9 will then have all of the connectors at the edge, like it should have in the first place.
Click to expand...
Click to collapse
Well like I said in the last post, it is working, but the one thing I wanna use, the 360 controller, isn't working. I did some looking and there is a driver needed, the xpad/ffmess or whatever. Those from what I read are needed, I did some looking on my tablet and didn't find either
Sent from an Atrix 2 during a smurf invasion!

OTG adapter

Bought two OTG adapters on eBay, they arrived from China today. When I attach them they are both recognized by the system. However, when I insert a USB memory stick I receive an error message about "high powered USB device" and the system won't acknowledge the presence of a memory stick. But, if I insert the Samsung OTG adapter I have no problem getting the same memory sticks accepted.
Is there anything I can do to correct this? Or have I just wasted $13? (I'm not gonna cry if that is the case)
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Sent from my GT-N8010 using Tapatalk HD
It is possible the active components in those adaptors plus the USB stick is pushing the consumption over the edge, where the simple Samsung adaptor does not.
I also have one of those adaptors by the way but have not had the same problem so far. Maybe my USB stick needs less power.
Kumabjorn said:
Bought two OTG adapters on eBay, they arrived from China today. When I attach them they are both recognized by the system. However, when I insert a USB memory stick I receive an error message about "high powered USB device" and the system won't acknowledge the presence of a memory stick. But, if I insert the Samsung OTG adapter I have no problem getting the same memory sticks accepted.
Is there anything I can do to correct this? Or have I just wasted $13? (I'm not gonna cry if that is the case)
Sent from my GT-N8010 using Tapatalk HD
Click to expand...
Click to collapse
Try to support the OTG with an external power supply...
Good luck
Galaxyer said:
Try to support the OTG with an external power supply...
Good luck
Click to expand...
Click to collapse
The one with the cord seems to have a connector, but the other doesn't. I suppose the 5V standard is applicable.
Sent from my GT-P3113 using Tapatalk HD
Try connecting everything together then connecting the OTG adapter to the Note. I have the same issue sometimes when connecting any device if the adapter is already connected.
Kumabjorn said:
Click to expand...
Click to collapse
Could I get a link for that one on the left (with the cable)?
Also, FWIW, I have three of the one on the right, and one of them just doesn't work reliably at all; glad I'd bought more than one (they were like ~$2.50 so something told me I should get spares )
did you check if there is a small button to change mode on the hubs ?
aalupatti said:
did you check if there is a small button to change mode on the hubs ?
Click to expand...
Click to collapse
Yes, of course
rtan73 said:
Try connecting everything together then connecting the OTG adapter to the Note. I have the same issue sometimes when connecting any device if the adapter is already connected.
Click to expand...
Click to collapse
Once in a while I had the same issue with the original adapter. With the new ones I don't get the error message but neither is the presence of the USB memory acknowledged. The larger one with cord has a blue power light that goes on. It turns off when I insert the stick but stay on when I insert it joint with the OTG adapter.
Sent from my GT-N8010 using Tapatalk HD
kcrudup said:
Could I get a link for that one on the left (with the cable)?
Also, FWIW, I have three of the one on the right, and one of them just doesn't work reliably at all; glad I'd bought more than one (they were like ~$2.50 so something told me I should get spares )
Click to expand...
Click to collapse
http://dx.com/p/5-in-1-combo-connec...ard-reader-for-samsung-galaxy-tab-10-1-160647
Just remember, it isn't working.
Sent from my GT-N8010 using Tapatalk HD
aalupatti said:
did you check if there is a small button to change mode on the hubs ?
Click to expand...
Click to collapse
The small one has it, I thought it was an ejector button for the card slot. I tried changing it but same difference.
Sent from my GT-N8010 using Tapatalk HD
I have an OTG adapter that's jsut a data-port-plug then a cable leading to a female-USB, I've had a lot of issues with USB devices being classified as "high power" and not working (including an Xbox360 controller, which has been listed on this site as usable without external power) I've tried 5 different hubs, and only 1 will work (3 brand-name (2x Ultra, 1xBelkin) and 2 unbranded from china) that's the one that accepts external power.
I could be wrong but I think they pulled the same trick apple did and an update lowered the power to the docking port, so you HAVE to use a powered hub to do much of anything... (though for the record, none of my 4 USB sticks (1gb, 4gb, 64gb, 64gb) have required external power...)
Kumabjorn said:
Link to reader I'd wanted. Just remember, it isn't working.
Click to expand...
Click to collapse
Oh, that's OK- I make my own kernels and can probably get around that host-mode current-draw issue.
Ashton_Durkhun said:
I have an OTG adapter that's jsut a data-port-plug then a cable leading to a female-USB, I've had a lot of issues with USB devices being classified as "high power" and not working (including an Xbox360 controller, which has been listed on this site as usable without external power) I've tried 5 different hubs, and only 1 will work (3 brand-name (2x Ultra, 1xBelkin) and 2 unbranded from china) that's the one that accepts external power.
I could be wrong but I think they pulled the same trick apple did and an update lowered the power to the docking port, so you HAVE to use a powered hub to do much of anything... (though for the record, none of my 4 USB sticks (1gb, 4gb, 64gb, 64gb) have required external power...)
Click to expand...
Click to collapse
Yeah, it surprised me to get that error on a memory stick, I didn't think they used much voltage.
Sent from my GT-P3113 using Tapatalk HD
So, now I have tried all possible connections to see if I could get the OTG adapters to work. The short answer is that they are rubbish.
I connected older (USB 1.0 and 2.0) memory sticks to no avail. Granted I didn't get the high power error message, but I didn't get anything else either, least of all access to my files. So that was out. I then connected a USB keyboard, again I received the high power error message and couldn't use the keyboard. Finally I connected a portable charger to the larger (5-in-1) connecter, the one with the cable, in order to see if that would help. All it did was burn the inside, took a few moments and then smoke started to come out together with the unmistakable smell of burnt copper.
Anyone, interested in these connectors would be wise to proceed with caution. Yes, the price is alluring, but if value is zero then anything over zero is too expensive.
Sent from my GT-N8010 using Tapatalk HD
Kumabjorn said:
So, now I have tried all possible connections to see if I could get the OTG adapters to work. The short answer is that they are rubbish.
I connected older (USB 1.0 and 2.0) memory sticks to no avail. Granted I didn't get the high power error message, but I didn't get anything else either, least of all access to my files. So that was out. I then connected a USB keyboard, again I received the high power error message and couldn't use the keyboard. Finally I connected a portable charger to the larger (5-in-1) connecter, the one with the cable, in order to see if that would help. All it did was burn the inside, took a few moments and then smoke started to come out together with the unmistakable smell of burnt copper.
Anyone, interested in these connectors would be wise to proceed with caution. Yes, the price is alluring, but if value is zero then anything over zero is too expensive.
Sent from my GT-N8010 using Tapatalk HD
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Looks like the ability to connect a USB stick is questionable. I just got an adaptor, the one that is just cable with female usb on one end. I plug it in and the device says USB connected. Doesn't recognize the card. But I do not get the error about "high power device" that everyone is referring to. It just doesn't recognize the card.
I used two cards. One is an Attache 16gb that has a rather bright light on it. On the laptop, when its plugged in, it stays on, and blinks when being accessed. When I plug it in to the tablet, the light comes on for a couple seconds, goes out, and nothing.
The other one is a PNY 16gb with no light. I tried it thinking the light might have thrown the Attache over the edge. The PNY doesn't seem to be recognized either. No errors. Just no response.
Is there a mount or something I have to do somewhere? Documentation with this thing is less than stellar so if there IS a document that answers this, I haven't found it.
Thanks.
EDIT: I tried with a powered USB hub and it worked. So its definitely a level of power issue. Now the trick is to find a way to have portable power on the hub. I recently tried using one of the portable cell phone power packs but I think it may have been defective as it would not charge up. I had purchased a solar powered USB hub but it worked once then ceased forever to function.

How to get otg cable to work?

I''ve gone through two otg cables and I'm sure none of them are broken. Is there a certain configuration/app for I need to use it? Really wana store my anime into a usb to watch for later when I'm on the bus or something where wifi isnt available?
kirbymaster101 said:
I''ve gone through two otg cables and I'm sure none of them are broken. Is there a certain configuration/app for I need to use it? Really wana store my anime into a usb to watch for later when I'm on the bus or something where wifi isnt available?
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Click to collapse
Hi, I have also bought one OTG recently. I am on MoKee ROM. I just plugged my pen drive to OTG cable, and otg cable to my phone. It just worked! it detected USB as external storage ( SD card ). Nothing else I did!
kirbymaster101 said:
I''ve gone through two otg cables and I'm sure none of them are broken. Is there a certain configuration/app for I need to use it? Really wana store my anime into a usb to watch for later when I'm on the bus or something where wifi isnt available?
Click to expand...
Click to collapse
I just plug in its auto detect .If yrs dont detect then its either yr cable faulty or yr rom could have messed up yr phone or the device you are connecting to cannot detect yr phone .There is no special sofware /application to use otg .
I agree w/ post #3. Your phone should read it automatically. I plug mine in and can pick it up immediately with the Root Explorer app.
Use debugging in developer options?
well my 3rd otg cable doesnt work so it must be my rom. anyone else using pacman rom with otg cable working?
otg inop
I had same issue bought a cable couldn't get it to recognize any usb device I bought usbfm app on playstorw and just started trying different things , it turned out to be me and not cable I used it on various 4.2,4.3 and 4.4 roms key is to be in right usbdrive directory mine was usbdriveA
As I said in my earlier post, I was able to locate the flash drive connected to my USB OTG with Root Explorer. It will be listed under storage.
kirbymaster101 said:
I''ve gone through two otg cables and I'm sure none of them are broken. Is there a certain configuration/app for I need to use it? Really wana store my anime into a usb to watch for later when I'm on the bus or something where wifi isnt available?
Click to expand...
Click to collapse
If you want actual help, then you need to always provide sufficient details, such as what hardware you are trying to plug into the OTG . Any ROM should work, most likely you either are trying to use a device that draws too much power or your have a cable that's not Samsung compatible.
DigitalMD said:
If you want actual help, then you need to always provide sufficient details, such as what hardware you are trying to plug into the OTG . Any ROM should work, most likely you either are trying to use a device that draws too much power or your have a cable that's not Samsung compatible.
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Click to collapse
I am trying to put a 64gb strontium usb into my s3. I dont think it is the cable since I ordered one online that was meant for an s3. I see youtube videos of people using otg cables that get notifications that its connected even if theres nothing plugged into the otg cable. However I dont get any notifications or message with/without a usb device connected to the otg cable. I'll see if I can test the cable on my friends phone some later time to make sure if its the cable's fault. The main problem I have is whether I'm SUPPOSE to get a notifcation or not since people who posted in this thread are giving me mixed answers, some do get the notification, some do not. I'm just wondering if I'm the former or the latter or even if its just broken for sure.
I don;t think you get any notification unless a USB device is attached, I will check that tomorrow with my S3. Additionally, I don;t think the S3 can supply enough power for a USB device of more than 32 GB the power to the USB port is very limited on phones, about 100 ma vs. 500 ma for a standard PC USB port. You can check whats going on by looking at a LOGCAT on terminal if you are using a rooted ROM. This article / video may also be helpful.
http://www.androidnz.net/2012/06/samsung-galaxy-s-iii-connectivity-demo.html?m=1
DigitalMD said:
I don;t think you get any notification unless a USB device is attached, I will check that tomorrow with my S3. Additionally, I don;t think the S3 can supply enough power for a USB device of more than 32 GB the power to the USB port is very limited on phones, about 100 ma vs. 500 ma for a standard PC USB port. You can check whats going on by looking at a LOGCAT on terminal if you are using a rooted ROM. This article / video may also be helpful.
http://www.androidnz.net/2012/06/samsung-galaxy-s-iii-connectivity-demo.html?m=1
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Click to collapse
okay some good and bad news.
Good news is tested out my wireless mouse and it works. Bad news is when I try to use my 64gb stick I get a folder in storage called usbdisk0 but its empty? Anything to fix this? Using es file manager.
Make sure your device is formatted either FAT32 or exFAT
DigitalMD said:
Make sure your device is formatted either FAT32 or exFAT
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Click to collapse
GOOD news, tested out my 8gb usb and it worked. Kinda depressed my 64gb usb doesnt work though. Anyone have any tips to make this 64 usb work. I'm fine with the 8gb but it would be awesome to make the 64gb card work. it is formatted as fat32. I dont think my phone can supply enough power since my 64 gb usb doesnt even light up when plugged in.
kirbymaster101 said:
GOOD news, tested out my 8gb usb and it worked. Kinda depressed my 64gb usb doesnt work though. Anyone have any tips to make this 64 usb work. I'm fine with the 8gb but it would be awesome to make the 64gb card work. it is formatted as fat32. I dont think my phone can supply enough power since my 64 gb usb doesnt even light up when plugged in.
Click to expand...
Click to collapse
Get one of these and use the external power for any devices that the S3 cannot power on its own.
http://www.amazon.com/gp/product/B00GD8AWKG/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1
DigitalMD said:
Get one of these and use the external power for any devices that the S3 cannot power on its own.
http://www.amazon.com/gp/product/B00GD8AWKG/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1
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So, its a poweerd usb hub + card reader basically? This looks awesome but do I need to like plug it in the wall or will it work portably?
kirbymaster101 said:
So, its a poweerd usb hub + card reader basically? This looks awesome but do I need to like plug it in the wall or will it work portably?
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Click to collapse
NO, you only have to attach outside power for devices the S3 cannot power , like a hard drive. and the aux power can be your USB charger
For the comments made about a USB OTG not having enough power to run some devices. They make USB OTG cables which can do this due to an extra extension which allows for a power source to be used. The cable I have has a male and female plug. All I do is plug in the device which needs a little extra power to the USB port, attach the male cable to my phone, and plug a power cable, like the one that came with my phone, into the female plug. It allows me to run my older WD ext HD which need its own power source. Here are a few pics I took of my USB OTG cable. It works great and didn't cost an arm and a leg either.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
The beneifit of this http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
is that it accommodates various card sizes plus has 3 USB ports, all work at the same time.
DigitalMD said:
The beneifit of this http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
is that it accommodates various card sizes plus has 3 USB ports, all work at the same time.
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Click to collapse
link gives me 404 error.

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