I am trying to modify a powered hub so that i can charge the nook and power accessories at the same time. There is a picture below with the information i have found out so far. I can see the diode that i am supposed to bypass, and once a jump it as seen in the picture i can charge the nook, but it will then not connect to any devices even when in usb host. Bother usb host and vbus will be selected but if i have the barrel plug connected then any device i have connected to the nook disconnects. Just fyi, the wire connected to the spot where it goes to the 5v on the usb plug, goes nowhere. Its only there for testing purposes.
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Hi,
I bought the nook but live in France. Can i charge my nook with my HTC Desire power supply and cable? The nook usb cable doesnt seems to be "only usb".
Thank you.
You can probably use a standard USB power inverter and generic cable. If it's safe for your Desire, it's almost definitely safe for the NC. However, some cables might randomly not work.
A standard micro-USB and charger will work, but it is slower than the Nook charger. I routinely charge from a powered USB hub at the office.
-- Tom Jupille
Ok thank you!
Hi I am also from Europe and I checked that Nook Color have a multi 220/110 voltage charger
www [dot] goo [dot] gl [slash] JYfSX
You need only plug adapter
Yeah, that what i use for now. As i have my htc power supply alway connected to my wall i wan't to put the NC us power in his box.
I tried one of those cigarette light -> USB adapters for charging the nook in my car. When I plug it in, it wakes up. But it's not charging. Anyone have any idea? I'm using the Nook cable, btw.
Az
azbarber said:
I tried one of those cigarette light -> USB adapters for charging the nook in my car. When I plug it in, it wakes up. But it's not charging. Anyone have any idea? I'm using the Nook cable, btw.
Az
Click to expand...
Click to collapse
It's charging, just slowly. Charging from a standard 500mA USB jack doesn't cause the "Charging" indication to appear in most battery monitors on the NC, but if you leave it there for a while with the screen off and not doing anything you should see the battery percentage go up a bit. It takes about 8 hours for a full charge via USB. It's enough power to either run the NC if you're actively using it OR to charge the battery, not both at once.
Ok so my TF701 will charge just fine while connected to the wall charger, but it wont charge at all while connected to a computer. The instruction manual says it will and the general population of users agrees. However when I plug it into my computer the tablet still shows as discharging.
Yes the USB ports work fine. Tried in 4 different computers, nothing.
Anyone have any idea what is wrong?
Thats done on purpose by Asus. It's been like that since the first Transformer Pad
Tab actually requires 12 to 15v to charge - hence the proprietary charger and connector . A usb port only provides 5V.
It will actually trickle charge over USB but it is extremely sloooooooooooooooooooooooooooow. If you use the tab whilst connected to USB it will discharge faster than it can charge.
The stock charger is actually only 5v, it's a USB standard. However the charger produces something like 40watts as opposed to standard USB chargers of 10-20watts.
I purchased a generic y-cable for this tablet. It goes by several names, but it's supposed to allow you to power a usb device externally while connected to a tablet. With mine, when I first plug it in it starts charging my tablet. But after about 5 seconds my Fire no longer charges from it. This happens on both Fire OS and CM. Is this normal? Is there someway I can keep my tablet charging while connected to a usb device?
Molorius said:
I purchased a generic y-cable for this tablet. It goes by several names, but it's supposed to allow you to power a usb device externally while connected to a tablet. With mine, when I first plug it in it starts charging my tablet. But after about 5 seconds my Fire no longer charges from it. This happens on both Fire OS and CM. Is this normal? Is there someway I can keep my tablet charging while connected to a usb device?
Click to expand...
Click to collapse
I'd be suspicious of the cable if charging stops with no USB device attached. Also make sure the charging brick can supply sufficient current to satisfy both devices.
I have a phone which I want permanently connected to an OTG keyboard and charger. (Mounted in car)
It's connected via a microUSB charging hub. (Pic attached)
The male MicroUSB must be plugged into the phone at all times - it cannot be removed. Likewise, all other components (OTG keyboard and microUSB power cord) must always be connected permanently.
So, the only option I have is to switch the power off at the source, i.e. cut power to the microUSB charging cable going into the whole system. (The power is cut when the car is turned off)
All the OTG charging hubs do not resume charging when the power supply is turned on again. It only recognises to charge the phone when I unplug the male MicroUSB from the phone and reinsert it.
Can I set up a tasker task to simulate this unplugging and plugging, say when the battery is less than 50% - so that when the car is on it charges the phone.
I've done some research and there seems to be a usb bind/unbind command I could potentially use?
Thanks for the help.
brownah92 said:
I have a phone which I want permanently connected to an OTG keyboard and charger. (Mounted in car)
It's connected via a microUSB charging hub. (Pic attached)
The male MicroUSB must be plugged into the phone at all times - it cannot be removed. Likewise, all other components (OTG keyboard and microUSB power cord) must always be connected permanently.
So, the only option I have is to switch the power off at the source, i.e. cut power to the microUSB charging cable going into the whole system. (The power is cut when the car is turned off)
All the OTG charging hubs do not resume charging when the power supply is turned on again. It only recognises to charge the phone when I unplug the male MicroUSB from the phone and reinsert it.
Can I set up a tasker task to simulate this unplugging and plugging, say when the battery is less than 50% - so that when the car is on it charges the phone.
I've done some research and there seems to be a usb bind/unbind command I could potentially use?
Thanks for the help.
Click to expand...
Click to collapse
You can cut 5v wire (to phone and not to hub-> needs 5v to operate with all usb devices) and put switch on, so when you need to charge just turn on the switch. So you have modified cable from hub to phone. Really simple solution. I've done it couple of times to fix friends tablets (aka 10 inch nav displays) + Phone charging + Auto android HUR + USB drive(for music collection), all shares same active powered hub.
Good luck.
Hello guys
I recently changed from S9+ to S21 and I have a question : I usually use my desktop computer to charge my phone during night while I sleep. (with data USB cable)
I have no problem when the desktop is on (under windows) : my phone charge (with USB cable) and I can transfert photos.
When my computer is off, when I plug the phone, the screen show the charging screen for 2 seconds and stops
I have no problem with my S9 to charge when the computer is off. (I know that there is an option in the bios to keep USB charging when computer is switched off)
It looks like the USB power is too low, and the S21 doesn't want to charge with it.
Maybe ther is an option in the phone to authorize this kind of charging ?
yan74s said:
Hello guys
I recently changed from S9+ to S21 and I have a question : I usually use my desktop computer to charge my phone during night while I sleep. (with data USB cable)
I have no problem when the desktop is on (under windows) : my phone charge (with USB cable) and I can transfert photos.
When my computer is off, when I plug the phone, the screen show the charging screen for 2 seconds and stops
I have no problem with my S9 to charge when the computer is off. (I know that there is an option in the bios to keep USB charging when computer is switched off)
It looks like the USB power is too low, and the S21 doesn't want to charge with it.
Maybe ther is an option in the phone to authorize this kind of charging ?
Click to expand...
Click to collapse
There isn't such an option in the OS as of now. It's possible that the S21 battery amp requirements are more than those of S9
Do you think the computer's USB port has a lower supply when the computer is turned off ?
We don't know what kind of computer you have, or what it's USB port capabilities are. That's something you can try to figure out, looking at your computer or manual for the computer's motherboard. Also check the BIOS settings, sometimes you can control the power state of the computer when it is "off" and whether power is still supplied to the USB ports (e.g., to allow the computer to boot up when it detects mouse or keyboard USB inputs).
As an example, my MSI motherboard has a feature where you can install software to set the USB ports to a high power output state, so you can power USB devices using more than the standard output current.
My Dell laptop has a USB port with a special symbol that means it's for high-power output for charging phones etc. So it can handle charging modern phones, and puts out more than 0.5 amps, but only for those USB ports with the special symbol (lightning bolt).
You'll need to just find out more information about what your computer is capable of.
I have a MSI gaming pro carbon X370 ( the optional wake by USB is on, without that, you're right, the USB are totally off and nothing will charge)
I did more investigations .... I tried all my USB cables and all USB ports and finally find 1 combination that works.
Only 1 of 12 USB cables worked ( the one took from an external HDD ) even the original cable supplied with the phone didn't work and nor a 100W Ugreen cable...
And only the front USB work. The different USB directly on the motherboard doesn't work with this phone, despite I always used them to charge many devices...
for information the working cable is a KAIBAO revision 3.0
Finally it doesn't work with this cable : it take longer before the phone stops to charge, but it stops too ...
Hi,
You need to check the power requirements of your new phone.
Thank you.