No USB devices work without powered hub on archos 70 - Gen8, Gen9, Gen10 Q&A, Help & Troubleshooting

Just a word of warning so others don't do as I did.
If you are messing with USB devices in host mode that require more power than what the Archos 70 can provide (100mA), and require extra power, use a powered hub at your own risk. It has the advantage of providing extra power, however after using one I now am unable to power anything without the hub. It seems that I now have 0mA from the unit. I did have the multi adapter (which was powering the hub) on the wrong (higher) voltage at one stage so it could be that, or there could have been a spike when I was trying (unsuccessfully) to get my usb DVB device to work. So I might have fried it!
This isn't a major problem and the USB port still works with the powered hub if I boot the unit with the hub connected, so I can link up a wireless keyboard/mouse and a usb pen at the same time. It just means that I can't use the usb host function at all if I am not near a plug socket. There are no issues with connecting to a PC in slave mode.
I have been messing around with SDE firmware and various rooting options, and the failure cannot be 100% pinned to the use of a powered hub, as I understand firmware updates can cause issues. The irritating thing is I would have voided my warranty, however I am not sure that I will miss the 100mA of power that much!

So you say, you can still connect devices, but only with a powered hub in between?
So data is still working but power isn't?
You may take a look at this topic: http://forum.xda-developers.com/showthread.php?t=948935

chulri said:
So you say, you can still connect devices, but only with a powered hub in between?
So data is still working but power isn't?
You may take a look at this topic: http://forum.xda-developers.com/showthread.php?t=948935
Click to expand...
Click to collapse
That is correct - I did take a peek at that topic before, and it was more specific to the 101, but I have seen other posts around that suggest that the 70 has similar issues. I can't see a solution, and I would imagine that it is a hardware issue. It would not imagine it was built with the idea that someone would attach a powered hub to it. There are no other issues with the device, and I don't have a problem with the screen powersaver.

Related

[webcam support] USB Host support that YOU can try (now in nightlies)

USB support and usb audio support were recently picked up by mainstream, so starting from nightly 135 you get all of the below (except for the webcam support). I am leaving the old information for history preservation purposes. The usb mode utility is replaced by Nook Tweaks
IMPORTANT! READ TO THE VERY END FIRST!
Ok, so I know some people want to try the usbhost mode and I am releasing this trial package to gather feedback and see how it works in the wild.
I am not responsible if you fry your nook (see below).
First, you need some hardware, namely microUSB to USB Female adapter. Something like this one. (There are cheaper ones on ebay, but delivery time is about 3 weeks, I got mine for $1.43).
Also an USB gender changer will work.
Then you need a kernel with usbhost enabled. I made a package that you can install onto emmc with CWM, or the same package could be installed on SD card if you use my installer. This package is only for CM7 users that already converted to .32 kernel. If you still run 2.6.29 kernel (ie CM7.0.3) - you need to upgrade to a fresh nightly like -87 or wait longer.
You can get the kernel here: http://nook.handhelds.ru/usbhost/update-CM7-green-usbhost-2-emmc.zip
As you probably know, the Nook Color comes a little bit crippled in a sense that id pin on the OTG controller is not connected and so we cannot rely on it to properly choose mode. Instead I wrote an app to achieve the switching.
The app is ugly as hell, sorry, it's my first attempt at writing an Android app, bear with me, it would become better (I accept free Android programming lessons too! ).
You can get the app here: http://nook.handhelds.ru/usbhost/NookUsbHostSwitcher.apk
The app requires root, so make sure to allow it once asked and make it to remember the setting.
Install the kernel, install the app.
Reboot into the new kernel.
Run the app and you'll see a big "ToggleButton". When it's in Off mode, that means your nook is in usb client mode.
When you press it for the first time it will change to On, that means usb host.
(you can connect your external accessory before or after you enable the host mode).
When you press it again, it will change to Off and switch back to the client mode.
I recommend that before switching the host mode off you first disconnect your accessory, otherwise the internal hub cannot switch off.
(note that in some configurations the host mode enabling did not work for me on the first try and I needed to turn it off and on several times before the device registered. I believe there is no such problem with this kernel, but keep in mind such a possibility)
Addition in v2:
A second button is now added that lets you to force "external" vbus source. When you make it to ON, the battery charger pump is opened and connected to vbus terminals. In this state it is safe to connect nook to a power source, usb host will work and the battery should be charging at the same time.
Even without external power if your battery has high enough voltage (usually when it's full for me), it still somewhat works.
Additionally if you try to enable HostMode and an external power source is connected already, the "external" power mode is enabled (not shown in the app, though). This is to avert a potential disaster from below and to save battery.
Now the important part: When the Nook is in host mode, it drives 5V vbus off the connector at all times. If you connect the nook to a PC in this state, the PC will try to drive it's own vbus. Last time I tried to do this, my usb port in the nook fried! You've been warned! But that was before I had the host mode working and it might have been caused by a number of other things I was doing at the time too. Anyway I am not very keen on repeating this experiment again. If you are curious and decide to try it anyway regardless of the warning, make a comment and tell me what happened
Supported devices (this is important, right?)
Note that only low power devices will work if you don't have an externally powered hub. Don't expect to be able to drive a cdrom or a hard drive out of just nook. 100mA is the current limit. (Current testing shows that if you use ISB hub, even unpowered, it hides this issue).
All keyboards should be supported. (the keymap in CM7 is a bit strange, though, you'll see it).
All mice should be supported too, though I have not tried.
I enabled Xbox and PS3 controllers support, but have not tried.
Usb camera support - I only enabled UVC-compliant cameras (Microsoft Live cameras are compliant for example, probably many others). You also need specially built nigthtly with videocam support (try Camera app).
USB storage - generic support enabled, so should work for you.
Serial port support - only generic support enabled (I guess GPS devices mostly work as serial ports)
USB audio support enabled - not sure if the Android has any idea how to support it.
The kernel is basically normal dalingrin's kernel with USB host support enabled and ipv6 disabled (to keep kernel size below 3M threshold).
Kernel source (for the curious and if you want to build your own kernel with some mode devices support): git://github.com/dalingrin/nook_kernel.git branch usbhost
Enjoy and share your experience.
Just ordered the adapter for this. Thanks so much for your efforts!
So if anything goes wrong, we can revert by just flashing Dalingrin's kernel again, right?
Going to order an adapter now
Quick (and possibly stupid) question: Would gender changer plugs work in combination with a regular micro USB->USB cable?
this is incredible, thanks for all your hard work !!!
Awesome news
Thanks for all your work on this. It just amazes me how much talent is here on XDA.
It also amazes me that Android tablets/phones struggle with something a 10+ year old Windows 98SE laptop can do with ease.
Ordered my cable and can't wait to try transferring pictures from my camera to the Nook!
Has anyone seen a netbook-style keyboard/case combo that would work with the nook? (Bluetooth and/or USB)
Great work man, can't wait to try this out!!
Just built cm7 from source as of 6AM and flashed your kernel, turned usb host on and attached my usb gender changer to my phone's micro usb cord and plugged in a mass storage device. dmesg in Terminal Emulator showed the device properly but apparently android has no idea what to do with it, the light didn't even come on. Encouraged by this minor sign of life, I plugged in a keyboard and it works (though of course the android keymap is close to full retard).
Good job! I think nullghost's idea of adding this to the CM7 pulldown menu is a good idea. Maybe also the power control?
You will need to mount the USB storage yourself.
Glad I though ahead and got an adapter
Working well so far. Will try more accessories at school!
Any advice on what adapter to buy? I was looking at this one:
http://www.amazon.com/USB-Micro-Ada...YMU6/ref=sr_1_1?ie=UTF8&qid=1306940268&sr=8-1
but not sure if it is what we are looking for since one review said it does not work for USB OTG.
Actually, thinking about it, is the USB host mode that is enabled here, different from the USB OTG that i am thinking of?
And since i dont mind being the first to ask a dumb question..
hololight said:
You will need to mount the USB storage yourself.
Click to expand...
Click to collapse
Would this be something done in the terminal, or through the settings UI (aka, it will show up on the same place that the SD card shows up)?
Using my mouse with my Nook at the moment
I went out and bought a gender changer, which seems to work. Thank you a LOT!
No luck with my Xbox 360 controller. It lights up and then keeps on blinking. I tried to assign hardware keys in FPse but it didn't respond to any keypresses.
Also, my Nook froze when plugging my mouse back in.
Dangit! How am I suppose to get any work done when you release something like this. Gonna have to run out and get a gender changer during lunch so I can play around with this!
Thank you verygreen!
-Racks
Yep, keyboard and mouse work!
THIS IS AWESOME!
holo and vg, you guys rock!
Youtube video here:
http://www.youtube.com/watch?v=wxuhCS50-e0
I know...it sucks and it's rotated. I'll get a better one up.
ace7196 said:
Yep, keyboard and mouse work!
Click to expand...
Click to collapse
Both at the same time? Using a hub?
Sorry, haven't tried that yet. But in theory it should (with a powered hub).
ace7196 said:
Sorry, haven't tried that yet. But in theory it should (with a powered hub).
Click to expand...
Click to collapse
Even unpowered hub should be fine. I use unpowered hub and it works with keyboard and mass storage.
Divine_Madcat said:
Any advice on what adapter to buy? I was looking at this one:
http://www.amazon.com/USB-Micro-Ada...YMU6/ref=sr_1_1?ie=UTF8&qid=1306940268&sr=8-1
but not sure if it is what we are looking for since one review said it does not work for USB OTG.
Actually, thinking about it, is the USB host mode that is enabled here, different from the USB OTG that i am thinking of?
Click to expand...
Click to collapse
OTG cable is only needed when hardware is supporting OTG mode natively.
All it does is has an extra connected pin. Nook ignores this signal unfortunately.
Divine_Madcat said:
Would this be something done in the terminal, or through the settings UI (aka, it will show up on the same place that the SD card shows up)?
Click to expand...
Click to collapse
Nook cannot have fully automatic otg mode where you just plug an accessory and it works, then unplug, lug a host and it works.
Instead you need to manually control the mode from the provided app.
This is so awesome, if the nook can support a usb Ethernet adapter i'd be in heaven, I wouldn't have to lug around my Sony UX. Who has the best development community in the world? Nook does!
verygreen said:
OTG cable is only needed when hardware is supporting OTG mode natively.
All it does is has an extra connected pin. Nook ignores this signal unfortunately.
Nook cannot have fully automatic otg mode where you just plug an accessory and it works, then unplug, lug a host and it works.
Instead you need to manually control the mode from the provided app.
Click to expand...
Click to collapse
Thanks for the cable info - adapter is ordered.
As for the mass storage, i guess what i was asking in a round about way; what IS the proceedure to mount a USB flash stick (for instance) so that something like Root Explorer could see the files?
Personally, i am REALLY interested in this for my photography. I would love to be able to connect my nook in the field, and get a sneak peak at what my shots are looking like, without having to haul out a full on laptop. My camera connects as a mass storage device, so assuming that Android could read a mass storage volume, i would be in business.
I hate you guys! =( Always making me spend more money that I don't have! Now I need to go find a good solid case with a usb keyboard!

Flash drive on USB Hub

Hi there.
I got my Galaxy S3 about 3 days ago and love almost everything about it.
I've been experimenting heavily with USB OTG, and it's such a great feature to have. I have got a Mouse, keyboard and USB flash drive all working over the USB OTG cable. I can also get the Mouse and Keyboard connected at the same time over a USB hub. However, USB flash drives refuse to work over a hub on USB OTG, even though they work directly from the phone to the USB. This is pretty confusing to me, considering two higher power devices work over the hub.
I've tried two different varieties of hub, both giving the same result and have also tried two flash drives. I'm using an un-powered hub and I honestly don't see how just because I'm using a hub the USB Flash drive isn't working. There is no way that it can have a higher power usage than a mouse/keyboard at the same time.
Just to note, I'm using the hub unpowered externally, it's going directly into the phone. I can't seem to find the power cable to try.
I have the UK (GSM) variant of the phone in blue and am running on the Stock 4.0.4 ICS firmware (i9300XXLF2) and haven't tried to root or anything.
Could someone suggest what might be the issue I'm having, or some things to try?
Thanks
Its a common IT issue that not everything works through a USB hub. Or even US extension cables.
rootSU said:
Its a common IT issue that not everything works through a USB hub. Or even US extension cables.
Click to expand...
Click to collapse
It works through it regularly through a PC.
Both USB sticks. And I've seen a video of someone doing it on youtube. I've also tried both FAT32 and NTFS with the same result.
Can you explain your exact set up please?
rootSU said:
Can you explain your exact set up please?
Click to expand...
Click to collapse
Samsung galaxy S3 connected to a small unpowered USB 2.0 hub, via a standard USB OTG cable. Connected to the USB hub is a single USB flash drive of which I have tried a 16GB (14GB actual) stick formatted in FAT32 and a 128mb stick in FAT32. When I connect the OTG cable, it's recognised by the phone. I then attach the USB hub and nothing is recognised, but it is infact working. I can confirm that because I've tried both a mouse and keyboard separately and at the same time through the hub. I have tried another hub with the same result. I then unplug those and put in the flash drive, the red light on the flash drive flashes for a bit and then dies, nothing is picked up by the phone.
Is the hub connected to a PC or not?
Are you saying:
Flash > Hub > PC it works
Flash > hub > Galaxy it does not?
Dont forget a PC USB kicks out 500mA of power which is about the minimum a flash drive would need. If the PC is not supplying the power to the USB via the Hub, I doubt the galaxy could supply that much.
Can you power the hub using the PC?
Yes, that's what I'm saying.
The hub works with the galaxy, but USB through the hub does not. I can connect a Keyboard and Mouse (Both with lots of lights on them) at the same time to the hub on the galaxy which SURELY takes more power than a single USB.
Everything works through the hub on the pc, and most things work through the hub on the galaxy but not flash drives.
So:
Keyboard + Mouse > Hub > Galaxy it works
Flash Drive > Hub > Galaxy doesn't work.
That's why I'm so confused. And power is going to the flash drive, the light turns on and flashes for a while, but is not picked up by the galaxy. The usb flash drive also works under normal circumstances directly through the OTG cable.
Human input devices take next to no power. A USB flash drive needs More. I believe this is your issue as previously mentioned
Sent from my GT-I9300 using Tapatalk 2
rootSU said:
Is the hub connected to a PC or not?
Are you saying:
Flash > Hub > PC it works
Flash > hub > Galaxy it does not?
Dont forget a PC USB kicks out 500mA of power which is about the minimum a flash drive would need. If the PC is not supplying the power to the USB via the Hub, I doubt the galaxy could supply that much.
Can you power the hub using the PC?
Click to expand...
Click to collapse
rootSU said:
Human input devices take next to no power. A USB flash drive needs More. I believe this is your issue as previously mentioned
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Seriously?
How come I can't just use one USB on the hub then... I'm only plugging one device into the hub, surely that should just be extending it? Or does it constantly try to power all of the ports? Is there any way I can debug the USB port on the galaxy? Or even limit power to just 2 out of 4 ports?
EDIT: I just read that a micro usb port is generally rated for 500mA+, which explains why the usb works normally, is it just the fact that all of the ports are powered?
MicroUsb is rated for 0.5A, that's correct.
However Usb-to-go is not rated for any output power, only for a list of compatible devices.
It may or may not work with other normal Usb-Devices, and could even be damaged if the slave device uses too much power.
(Unlikely with highend-devices such as the S3)
LED's take next to no power, the keyboard too.
Modern (=optical) mice got some electronic but it's not really high either.
Usb-Hubs however take quita a bit of power and flash drives do so too (especially when erasing "overwriting" blocks).
You could try a powerd usb hub , there might even exist some with a battery pack.
If not, it shouldn't be too hard to strap a battery pack to a hub, however that makes it heavier, clunkier and requires charging...
d4fseeker said:
MicroUsb is rated for 0.5A, that's correct.
However Usb-to-go is not rated for any output power, only for a list of compatible devices.
It may or may not work with other normal Usb-Devices, and could even be damaged if the slave device uses too much power.
(Unlikely with highend-devices such as the S3)
LED's take next to no power, the keyboard too.
Modern (=optical) mice got some electronic but it's not really high either.
Usb-Hubs however take quita a bit of power and flash drives do so too (especially when erasing "overwriting" blocks).
You could try a powerd usb hub , there might even exist some with a battery pack.
If not, it shouldn't be too hard to strap a battery pack to a hub, however that makes it heavier, clunkier and requires charging...
Click to expand...
Click to collapse
Okay, that makes sense then.
The hub is tiny and that's the idea, if I could get a tiny battery that'd okay, just irritating really. To be honest, I could do with just two ports, it is just that I sometimes want to use my flash drive in conjunction with another device or something and it's yet another inconvenience to buy another hub.
I may buy a charging pack for my phone, because honestly the battery life is abysmal, do you reckon that I could hook that battery pack up to the hub? Although I don't see that working because the hub in question has a dedicated power input.
Is there a set up you think might work? The idea is to be able to connect some extra storage and keep it fairly compact so that I'm not lugging a load of extra crap around. The hub I'm planning to use is a tiny square, probably about 1.5inches large.
I love the idea of my phone being a mini computer, it really does do just about everything I want, that would make it even better.
EDIT: I've tried a 2 way female splitter, no success there either. I think what I'd really need is a bluetooth keyboard that I can connect to my phone, that also has a usb port I can connect a mouse to, so I can then plug in my stick and use a mouse+keyboard combo.

[TIP] USB OTG: power usage and other stuff

I'm going for a long trip and unable to bring my laptop, so I need to do everything from my RAZR. I bought a USB OTG cable and a USB Y-cable thinking it would be the final solution.
The main problem with the card readers as some of the USB sticks is that they all want >100mA and RAZR reports being unable to supply that amperage. You can debug this using USB Host Controller and enabling the 'DMesg display mode'.
Simple permanent solution:
buy a cheap unpowered usb hub. Since weight and space are my main concerns I cannot travel with powered hubs.
Complicated temporary solution, requiring root:
Check the dmesg output from the above application or by doing a tail -f /var/log/dmesg in terminal and see what port is being reported as underpowered. Most of the time it will be this: "usb 3-1: rejected 1 configuration due to insufficient available usb power". Of course that's not true since the power is provided by an external brick capable of supplying at least 1 amp.
You have several ways of doing this, I'm using root explorer as an example. Go into /sys/bus/usb/devices/3-1/ , click on the bConfigurationValue file, select 'Text Editor' from the prompt, type "1" into the editor, save and exit.
You will have to do this every time you plug something in so you might make it into a script, something like "echo 1>/sys/bus/usb/devices/3-1/bConfigurationValue".
Other issues: I'm taking two cameras with me, a Canon SX230HS and a Nikon D7000. The problem with new cameras is that they have given up on the Mass Storage protocol and switched completely to PTP (Picture Transfer Protocol).
Simple solution: use an SD Card reader to transfer photos. Use USB OTG Helper to help you with mounting, it's a free one-click solution.
Complicated solution: for Canon I'm using RawDroid. For Nikon I'm using DslrDashboard.
If you can afford it, PhotoMate should also work.
Oh, this should go into the Accessory forum, or maybe not even on this forum, but I was able to ditch the camera chargers (two wall bricks + two chargers) by buying a PIXO C-USB charger. It's one of those universal LiPo chargers with spring contacts. You can plug it into a USB port or USB charger and you can charge 1 cell or 2-cell LiIon/LiPo packs or AA/AAA batteries.
I am still looking for an efficient 2xAA/AAA -> USB high current supply for complete portability, but I might just build one myself. The reason is that you will find batteries everywhere but less so publicly available power sockets.
Hmm, I think that for a cheap USB power, you could use one of those smartphone battery backup usb batteries. The problem I see with AA or AAA is that they are less efficient due the extra space they need because of the packaging of each battery, and the materials (NIMH vs Lithium)
Also, taken from this thread: http://forum.xda-developers.com/showthread.php?t=1349038
You need a powered hub in order for the RAZR to accept it, and I think this is a kernel issue, and cannot be modified just with root (Because of the locked bootloader).
I think that probably what you need, as you stated before, an external source of power, and probably something like this powered usb hub:
http://www.ebay.com/itm/Black-Samsu...o-USB-Host-OTG-HUB-CARD-READER-/160921077532?
It needs to be powered in order for it to work with our RAZR.
Have a look at the entire thread that I posted before, I think it could be helpful.
I am already on my long trip and the non powered usb hub worked perfectly. I already explained how you can 'fool' the kernel into thinking it has enough power, this is a non-issue. The thing with AA/AAA is not density but it is they are readily available in remote areas of the world where there is no power.
I already tested one AA/usb power supply I had for overload and magic smoke came out.
It worked for me. However it depends on how the hub and charger are connected. I had to connect the hub between the female plug of the otg-cable (a y-cable) and the usb stick and the charger to the male otg-cable plug. Connecting the charger directly to the hub didn't work.

[Q] OTG with external power/USB hub

I'm looking to be able to use my external HDD (1TB WD passport) on my phone via OTG. As I understand, ntfs support varies with kernels etc but I'll cross that bridge when I come to it as I think there's a more fundamental problem.
I've got an OTG cable, and my mouse, usb pen drive, keyboard etc work with it. The HDD doesn't, because the phone can't provide enough power to operate the thing. I thought I could get around this by connecting it via my usb hub (which runs off external mains power) but when I connected this up to the phone and plugged the HDD in nothing happened. Likewise, the mouse and pen drive etc could also not be recognised by the phone when they were each plugged in via the hub (one at a time, I wasn't trying to run 8 things at once!) even though they worked perfectly when the phone itself was powering them when they were directly plugged into the OTG cable (if that makes any sense).
So, assuming it was a problem with the hub, I instead tried the method in this thread http://forum.xda-developers.com/showthread.php?t=1828032 and made my own y type cable so that now rather than the phone providing power to the OTG peripheral, the power now comes from a standard USB phone charger. I'm fairly confident that I did all the soldering correctly and there weren't any short circuits.
When I tried using this, I had the same issue as with the hub. None of the mouse, the pen drive etc could be recognised with the modified OTG cable, which was odd as physically nothing had changed from the point of view of the peripheral plugged into the OTG (the data cables connecting it to the phone were unchanged, and it was still getting 5V power, just from the wall rather than my phone) which makes me think perhaps the problem is a software one where the phone only recognises a USB peripheral/begins USB host mode if the peripheral is actually draining power, since the power leads running from the phone side of the OTG cable are now just an open circuit.
Just to confirm I hadn't just snipped a data cable by accident when modifying the OTG cable, I re-soldered the OTG cable to how it originally was and it worked the same way it had previously. This means all the data cables are still intact, so I think it must be a software issue.
I thought maybe a way of testing this would be to modify the y cable and connect the red and black power cables coming out of the phone to each other via a fairly hefty resistor (so you still get power flowing from the phone even though the USB peripheral is powered by the wall). But it seems a bit dangerous!
Has anyone else had trouble with this? I've read around on forums and for a lot of people USB hubs and y type OTG cables seem to "just work", although I've not seen anyone with an i9300 reporting success. I'm running the latest version of liquidsmooth, but have also tested on CM10.1 and have the same problem. It might be an AOSP thing that stock samsung firmware will fix?
Let me know your experiences!
TLDR: I'm pretty sure I've got a software issue where my i9300 only recognises a USB peripheral/begins USB host mode via OTG if the peripheral is actually draining the phone's power, and so doesn't work when a USB hub or externally powered (y type) OTG cable is being used.
Thank you!
It apparently only supports 500GB regardless of power source
Sent from my GT-I9300 using Tapatalk 2
rootSU said:
It apparently only supports 500GB regardless of power source
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Really? That's odd - is that an android limitation or samsung? Either way it still seems weird that my y cable/hub didn't work for the mouse/keyboard, is that something you'd expect?
Sorry I didn't read that part.
I have a portable passive hub. Kb and mouse working fine...
Sent from my GT-I9300 using Tapatalk 2

Otg and power same time

I thought I'd throw this out here to whoever is interested in a similar install.
It's been a long while trying to figure out how to get my nexus 10 working otg without draining the battery. So, what I did was eliminate the battery all together and run it with a regulated power supply soldered to the positive and negative pins inside where the battery clip would normally go. Everything ran smooth without any errors whatsoever, then came time to test it all out by plugging the otg cable. what do you know, it worked flawlessly.
I'm able to run a usb hub with 3 flash sticks and 1 ssd hd. Hub must be powered separate with the power plug. This is a perfect setup for my situation since the tablet is installed in my truck and I wasn't too happy with the idea of having a lithium battery inside on hot summer days.
I'm pretty sure this method could even work while keeping the battery installed inside connecting the leads to a double throw relay along with a separate plug that would separate the two power sources.
Testing also passed while plugging it to the pc foe file access and debugging mode.
Hope this helps some people. Don't be shy if you need to ask any questions on this project.
Later
A pc usb port puts out 5v 500ma wich barely keeps the Nexus10 battery level
The ac charger puts out 5v 2amps
I hope your power supply is putting out same amps..
Sent from my Nexus 10 using XDA Premium HD app
Asylum01 said:
I thought I'd throw this out here to whoever is interested in a similar install.
Hope this helps some people. Don't be shy if you need to ask any questions on this project.
Click to expand...
Click to collapse
Hello Asylum,
I'm indeed interested in your setup, since OTG+charging is not possible with traditional methods (even pogo cable doesn't work along with OTG).
If I clearly understood, you opened your nexus, removed the battery and directly soldered cables + and - ?
Is it a complex operation ? (in particular to open the nexus and close it without tearing it down).
Do you have a photo of your installation ?
Thank you for your help :cyclops:
LeDuke
I'm also interested in this setup and would love to see pics!
Not to sound like a d1ck or anything, but I have a alternative. Just make a otg cable with a male and female USB ends and just hook up the male end to power lines. Them you can just use a regular USB wallwart to profile power to your drive.
I used this method to run a 1tb external HDD.

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