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I downloaded Nook Tweeks, enabled USB host mode and External vBus, but nothing happens when I connect a USB-stick via a micro ubs to usb converter.
Am I supposed to do something else? Or does the USB-stick have to be in some special format?
BrotherZero said:
I downloaded Nook Tweeks, enabled USB host mode and External vBus, but nothing happens when I connect a USB-stick via a micro ubs to usb converter.
Am I supposed to do something else? Or does the USB-stick have to be in some special format?
Click to expand...
Click to collapse
I got the same exact problem. It didn't seem to work at all.I think I'll have to order the adapter to see if the problem is the OTG cable or not
dannghiem0801 said:
I got the same exact problem. It didn't seem to work at all.I think I'll have to order the adapter to see if the problem is the OTG cable or not
Click to expand...
Click to collapse
I ordered some cheap ones from DX, but since there are two of them and none of them works I'm assuming it's the Nook the problem is with.
BrotherZero said:
I downloaded Nook Tweeks, enabled USB host mode and External vBus, but nothing happens when I connect a USB-stick via a micro ubs to usb converter.
Am I supposed to do something else? Or does the USB-stick have to be in some special format?
Click to expand...
Click to collapse
It could be the USB-sticks are trying to draw too much power. The Nook host port will only supply low power USB devices (<100mA) and it is also best to have a fairly well charged battery. Some sticks work and others don't.
If you have a powered USB hub then this supplies the power so there is no problem. So try with a powered hub to at least see if that is the issue.
bobtidey said:
It could be the USB-sticks are trying to draw too much power. The Nook host port will only supply low power USB devices (<100mA) and it is also best to have a fairly well charged battery. Some sticks work and others don't.
If you have a powered USB hub then this supplies the power so there is no problem. So try with a powered hub to at least see if that is the issue.
Click to expand...
Click to collapse
I used the same USB in this chart Nook Color USB HOST Device Compatibility List Sandisk Cruzer 8GB on CM7
I bought the Nook Color is to connect it to my camera via DSLRcontroller but so far still not successfully with USB stick.
Read my thread , it should answer most if not all your questions
[23 Jan 2012][USER/DEV] USB Host Support & Development [CM7/CM9]
I'm hoping to get some free time and update it this weekend with more info and probably a widget
I could never get usb host working on cm7. I have been trying to use RYC usb to control my Nikon Dslr . Once i switch over to CM9 beta it worked first time.
Sent from my Nook Color (CM9 ICS Beta)
Dj-Gutz said:
Read my thread , it should answer most if not all your questions
[23 Jan 2012][USER/DEV] USB Host Support & Development [CM7/CM9]
I'm hoping to get some free time and update it this weekend with more info and probably a widget
Click to expand...
Click to collapse
I have read this thread over and over again. Ill try to run CM9 soon to see if it works
Sent from my NookColor using Tapatalk
CM7 also shouldn't give you any trouble , as long as its FAT32 and you are using a hub
can you explain what exactly have you tried and provide logs?
I didnt use usb hub,just enable the usb host mode in Nook Tweak app and plug my usb via otg cable.
Sent from my MB508 using XDA App
Then you didn't read good enough the thread or the chart..
You need an external hub ( powered or non-powered ) to work with the sandisk cruzer.
Thanks a lot, i ll order one and try it out.
I tried to connect with my camera but nothing happened,I guess I have to try with usb hub as well
Sent from my MB508 using XDA App
I want your experience in psu schematics.This is my plan, I will buy a cheap usb hub,,I will power it with dvd player smps 5V at the same time it will supply parallel to pi micro usb socket.My question is ,Do you cut the upstream power from usb hub when you are connecting the hub? do you left it as it is,,may be a diode is present.
PREMOLIKES said:
I want your experience in psu schematics.This is my plan, I will buy a cheap usb hub,,I will power it with dvd player smps 5V at the same time it will supply parallel to pi micro usb socket.My question is ,Do you cut the upstream power from usb hub when you are connecting the hub? do you left it as it is,,may be a diode is present.
Click to expand...
Click to collapse
While I can't answer specifics on what wires to connect I would recommend taking a look at this great guide to building your own PSU for the RPi http://elinux.org/RPi_5V_PSU_construction. This includes circuit diagram layouts.
Sent from my SCH-I535 using xda premium
I have my Pi powered from one of the normal USB ports. The power comes from the 'power' cable of the USB hard disk that is attached to the Pi. The hard disk's main USB cable is plugged into a powered USB hub.
Attached an image.
Do we need push more mA into her. mines running off my Tab2`s charger at the moment which is 2 Amps..??
lodger said:
Do we need push more mA into her. mines running off my Tab2`s charger at the moment which is 2 Amps..??
Click to expand...
Click to collapse
That should be enough amps as most phone and tablet chargers will provide the 5-5.6V of power needed for the RPi to function properly.
Sent from my SCH-I535 using xda premium
2A will be sufficient to power a couple of peripherils including pi itself.
powered USB hub...
Hey guys, it seems ive got power issues with my pi, everything works fine if i just use the two usb ports, but as soon as i plug in my powered usb hub i get keyboard errors, bluetooth dropping, and wifi connection issues, all symptoms of low power. anyone having this issue with thier Raspi & powered usb hub?
justanotherlurker said:
Hey guys, it seems ive got power issues with my pi, everything works fine if i just use the two usb ports, but as soon as i plug in my powered usb hub i get keyboard errors, bluetooth dropping, and wifi connection issues, all symptoms of low power. anyone having this issue with thier Raspi & powered usb hub?
Click to expand...
Click to collapse
Exactly how do you have everything plugged in?
Assuming power to pi from one source, hub to the USB port and your accessories all to the hub: See if you can get your pi to boot with the hub plugged in to the accessory port but nothing to the power micro USB.
I suspect the hub may be causing issues by backfeeding power through the accessory port. This test will tell.
powered USB hub...
cjdalessio said:
Exactly how do you have everything plugged in?
Assuming power to pi from one source, hub to the USB port and your accessories all to the hub: See if you can get your pi to boot with the hub plugged in to the accessory port but nothing to the power micro USB.
I suspect the hub may be causing issues by backfeeding power through the accessory port. This test will tell.
Click to expand...
Click to collapse
You guessed correctly to how i had it all set up. I did exactly what you said, tried booting, but got nothing. i dont think its backfeeding, any other suggestions? this one leaves me scratching my head.
justanotherlurker said:
You guessed correctly to how i had it all set up. I did exactly what you said, tried booting, but got nothing. i dont think its backfeeding, any other suggestions? this one leaves me scratching my head.
Click to expand...
Click to collapse
Are you using seperate power for usb hub ?If it is so you should cut the power terminal from usb hub to pi.See that you are supplying good current to the hub.
I recently got a 1 terabyte usb 3 external hard drive. I want to use it directly on my note2 via otg to backup my files and free up space on my device and microsd while I am away from my pc. I noticed my battery gets discharged really fast from powering up the drive. I was wondering how I could provide an external power to the drive or the note 2 itself while the drive is connected to the note2 via otg. Thanks guys.
Zerolemom battery. Other than a bigger battery I dont know of a different way.
sent from my Provari with a mini rda!
I've had a couple if external hard drives that have two usb connectors. I read somewhere that once the drive starts and spins up, you really only need one connection.
If thats the case, and you do have a two usb connection cable for that drive, you could maybe connect one to another power source (computer usb, wall adapter, etc).
Don't know if any of that will actually work, but the theory sounds good in my head.
Sent from my Mental 'Note' II.
I have an external hard drive also but my Note 2 doesn't recognize it as a memory drive. It's powered by an ac adaptor so I dont see why it won't establish a connection.
Double0EK said:
I have an external hard drive also but my Note 2 doesn't recognize it as a memory drive. It's powered by an ac adaptor so I dont see why it won't establish a connection.
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Click to collapse
I also had that problem but I used paragon ntfs&hfs+ app and my phone recognized my external hd.
XyonNYC said:
I've had a couple if external hard drives that have two usb connectors. I read somewhere that once the drive starts and spins up, you really only need one connection.
If thats the case, and you do have a two usb connection cable for that drive, you could maybe connect one to another power source (computer usb, wall adapter, etc).
Don't know if any of that will actually work, but the theory sounds good in my head.
Sent from my Mental 'Note' II.
Click to expand...
Click to collapse
Too bad my seagate backup plus only has 1 usb connection.
siakgayyem said:
I also had that problem but I used paragon ntfs&hfs+ app and my phone recognized my external hd.
Click to expand...
Click to collapse
Thanks I'll try it tomorrow.
You can get a USB hub, and do some modification on it.
When I was using my nexus s, I do this:
http://www.androidcentral.com/android-advanced-usb-otg-nexus-4
Just Solider + & - input in your usb hub (input), power your external hard drive with your power bank... So it won't suck your battery
128Gig
siakgayyem said:
I recently got a 1 terabyte usb 3 external hard drive. I want to use it directly on my note2 via otg to backup my files and free up space on my device and microsd while I am away from my pc. I noticed my battery gets discharged really fast from powering up the drive. I was wondering how I could provide an external power to the drive or the note 2 itself while the drive is connected to the note2 via otg. Thanks guys.
Click to expand...
Click to collapse
I have mounted a 128Gig USB drive. No Problems! I will try to mount my 2Tb drive to my note via a Volcano external drive unit.
---------- Post added at 08:24 PM ---------- Previous post was at 08:21 PM ----------
Same issue for me. It says blank memory device. I have a thermaltake 2 bay drive that is powered. I guess that it has to supply its own buss voltage. So much for the 2TB drive mounting.
Or you can get a powered USB Hub. So that the hub powers the HD and not your phone.
Something like this
http://www.amazon.com/gp/aw/d/B005P2BY5I/ref=mp_s_a_1_1?qid=1378183838&sr=8-1&pi=SL75
Sent from my SPH-L900 using xda app-developers app
Also pnce you get it powered up you might need to format it. I am unsure if this phone can read ntsf. Everything of mine is formatted to fat32 and exfat. So if you get it powered and it shows no memory or something it might be the format.
sent from my Provari with a mini rda!
xKrisx said:
Or you can get a powered USB Hub. So that the hub powers the HD and not your phone.
Something like this
http://www.amazon.com/gp/aw/d/B005P2BY5I/ref=mp_s_a_1_1?qid=1378183838&sr=8-1&pi=SL75
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
::This::
I do it all the time at work. A small usb hub that plugs into the wall for power will keep your phone from draining so fast.
Sent from my SGH-T889 using xda app-developers app
DjRenigade said:
Same issue for me. It says blank memory device. I have a thermaltake 2 bay drive that is powered. I guess that it has to supply its own buss voltage. So much for the 2TB drive mounting.
Click to expand...
Click to collapse
I solved this issue by using Paragon exfat ntfs hfs from playstore.
The solution that comes to my mind is to just connect both devices to a computer, laptop, or netbook, open 2 windows and drag n drop.
But that powered hub does look like something fun to play with.
Sent from my SCH-I605 using xda app-developers app
i've been using chainfire's app to do some timelapses, and it's pretty awesome.
But is there a way i can charge the nexus 7, at the same time as i have it connected to the DSLR?
Like is there a cable or something?
-Skandix
I took a look at the app you're using and it appears you use a USB OTG in order to connect the camera to your Nexus. There is in fact a variation of the OTG which is an OTG y or OTG power adapter which as a leg for power and a leg for data. Here is the first result on Amazon so you can see what I'm talking about:
http://www.amazon.com/Micro-Cable-Power-Nexus-Galaxy/dp/B00CXAC1ZW
The only thing is that you need a Kernel which supports USB host while charging. Once you've got that and the cable, you should be able to continuously connect to the camera while maintaining full charge on your Nexus.
Nexus 7 (2013) with OTG and charging at the same time.
NO MODE NEEDED
[Little Intro]
I bought a Nexus 7 (2013) to use as a personal computer.
I admit, I've ****ed up the device a few times experimenting with kernels and stuff.
The thing is, you just need it rooted to use USB reading. Then you think: ok, I'm using USB and external HDs, I'm using mouse and keyboard, a external all-in-one Card Reader, and even a device that communicates with an XBox Wireless controller, but using as a computer the battery will go quickly.
I've tried two Android Cyanogen's distros and ****ed up the device 6 times. So I kept the default kernel rooted, plugged into the USB Hub device and said: well, **** off.
The thing is, when using the device I've noticed it was charging, but not saying it was charging.
[Explanation]
With my little technical knowledge of electronics I can explain what happens here.
The kernel does not support the use of OTG and charges at the same time: that is theoretical, saying that in software is not the same that measuring that.
So, what if the system charges but it just do not know?
Even if the both sides have the same potencial difference (I guess that is called voltage in english, a term disregarded in my born language, sorry about my english by the way), what if one side is providing a larger current? In theory the other side will charge, if it is a battery.
So, what actually happens is that the Nexus 7 charges, but the system level software, that, in theory, do not permit that, just do not show what is actually happening.
Obs.: I've tested the USB-Hub into my computer and it accuses overvoltage, and then when plugged to my computer I need to turn off the external power of the gadget. So, it is probably because of the specific gadget I'm using.
[Little things]
That could, may, just be possible with some specific equipment, so I will post the exactly equipment I'm using, and how I'm using it.
I ask you guys just try without the power loop I'm using to know if it is necessary, and the Nexus 9 guys to test if the same happen with it.
[The equipment]
My USB-Hub: www.dx.com/p/7-ports-powered-usb-hub-678
My OTG cable: www.dx.com/p/micro-usb-male-to-usb-female-w-usb-male-otg-cable-black-170927
[How do I connect it]
I connect the OTG cable by the male micro-USB into the tablet, loop the power with the male-USB into any USB port of the hub and connect the female-USB into the default hub main port - that one that is not the default USB-like format.
I power the USB hub and that's it. I'm using a Logitech dual transceiver with mouse and keyboard, the default microsoft XBox USB gadget, a generic all-in-one card reader and a 4GB Seagate external HD plugged into the hub.
[A final little thing]
Yes, it does not charge quickly, and yes, sometimes the battery level will be consumed a little bit. But it works well generally, without any mode needed.
It seem that is not the same as in powering mode. I'm thinking in to build an image that permits to choose between on or off in the USB out port. Can someone guarantee me that this is what the Cyanogen kernels do?
Kernel mode differences
Just to be clear, the "original" kernel mode can't know that it is charging and accessing the OTG at the same time, even doing it.
Maybe, and just maybe, the other kernel modes just let the kernel know it, having no difference to the original kernel. That's a big maybe, but a possible one.
I'd expect someone to confirm that the kernel modes "cut off" the voltage, and because of that may charge faster. Someone?