i found a usb hub i had, but i couldnt find a charger, but i have managed to find a sony charger i had which powers the hub its 3volt 500ma output? is this safe to use to power other accessories to use on the device (mx2)
Probably not. What kind of stick?
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imito mx2
what voltage would i need?
I believe you'll want 5v
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Hello guys
I have Nexus media importer (not rooted) and when i connect usb stick its working fine but when i connect my external hdd WD 320gb its not working. Anyone knows what could be the problem ? maybe lack of power ? waiting for answers :highfive:
You can connect only device with own power source...
It is possible to use a hub with otg, I have connected a kboard and mouse through a basic 4 port hub as a tester. You should be able to use a powered hub to drive your external HD
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So which do you think is the problem?
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Both the other posters indicated it is likely a power problem. But, not all external HD's will work, powered or not. My WD 750Gb My Passport HD won't mount even powered.
It is indeed a power problem. My usb 2.0 based wd1600 did the same. Since it does not have its own power source, i wired in 5 volts to its usb cable and that got me up and going. There are some usb 3.0 ext hdds that dont need external power to work though. Tassadar got one and said it runs fine with just the power provided by the n7. So you have 3 options. 1. Use an hdd with ext power. 2. Wire in 5 volts to the cable. 3. Purchase an hdd which the n7 can power.
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How can I wire 5v power? You mean by hub with power input?
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Necronhyperion said:
How can I wire 5v power? You mean by hub with power input?
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Click to expand...
Click to collapse
No. I actually spliced a 5 volt power adapter directly into the hdds usb cable (red and black wires). A little solder and a few heatshrinks are priceless.
I was going to upload a pic of the cord, but uploading anything with the xda app is beyond retarded anymore. Startimg to regret paying for the premium. For the greatest android site on the web, it is a shame that their app stinks and riddled with bugs. Kinda ironic.
Edit:Uploaded with a browser.
Sent from my screaming Nexus 7, multibooting Ubuntu-Plasma-bodhi-paranoid-rasbeanjelly-cleanrom-and stock.
Thank you very much.you helped me a lot
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hello guys well i have a nexus 7 that i set up in my car everything working perfect but i cant get the battery to "ac charge" im using this cable
http://www.ebay.com/itm/Usb-type-A-...G-Micro-USB-female-power-supply-/310680595889
the issue is not in the charger because the charger im using when connect to the tablet directly does achieve ac charging but when i plug in the above splitter it looses it, if the cable is meant to separate data from power than why is this happening? how can i get "ac power" or fast charging, I currently have everything connect to a toggle switch that i leave on over night, and i really is not a big deal but i noticed the other day with the navigation on watching videos that the battery is still draining.. using timur kernel
thanks in advance
its obviously the splitter, from the looks of the cable on the micro usb socket its to thin to take the power?
You need to state more info. What kernel? Rom? Only a specialized kernel will allow otg host mode charging.
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If you are completely stock, the tablet will not charge while it is in Host Mode with the OTG cable attached. It can be done with a special kernel, though.
Yup, thats what I said.
I can almost guarantee it is your otg cable,get a samsung compatible otg with power cable.
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-W-Micro-USB-power-for-Samsung-N5100-i9300-i9500-N7100-/130917631296?pt=US_Cell_Phone_PDA_Cables_Adapters&hash=item1e7b4c8540
I have a car install running Timurs usbrom (which I recommend over just his kernel) and its the one Im using without issue.
It is because the otg cable does not have the data cables in the powered end that is split off. They need to be shorted to get full AC charging but it is impossible with an Otg cable as it would not work for any data.
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Kodiack99 said:
I can almost guarantee it is your otg cable,get a samsung compatible otg with power cable.
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-W-Micro-USB-power-for-Samsung-N5100-i9300-i9500-N7100-/130917631296?pt=US_Cell_Phone_PDA_Cables_Adapters&hash=item1e7b4c8540
I have a car install running Timurs usbrom (which I recommend over just his kernel) and its the one Im using without issue.
Click to expand...
Click to collapse
I also have the timurs kernel but i dont see the difference between your cable and mine......
graydiggy said:
It is because the otg cable does not have the data cables in the powered end that is split off. They need to be shorted to get full AC charging but it is impossible with an Otg cable as it would not work for any data.
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Click to expand...
Click to collapse
So what you are saying if im understanding correctly is to achieve true ac charging you have to utilize all 4 cables in the usb passage?
davidadavila said:
So what you are saying if im understanding correctly is to achieve true ac charging you have to utilize all 4 cables in the usb passage?
Click to expand...
Click to collapse
You need to short both the data pins together for AC charging. But if you do that, OTG is gone.
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davidadavila said:
I also have the timurs kernel but i dont see the difference between your cable and mine......
Click to expand...
Click to collapse
You are just using the kernel,usbrom is his full cm10.1 based custom rom. The proper otg cables need to have pins 4 and 5 (ground) together on the tablet micro usb end to activate the ofg and power,that why you need the special cable.Your cable only power the device on the usb end not the tablet,it says no device charging in the description.
Also with Timurs kernel or rom the data wire cross isnt needed,or the otg devices wouldnt work.
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My Galaxy S4 charges.... terribly directly connected through USB into my PC in both USB 2.0 and USB 3.0 inputs.
Am I doing something wrong, is there a way to boost the charge you get from a USB PC input?
Thanks!
Most USB ports on a computer are only 0.5 to 0.75 amps. To charge your GS4 you really need about 1.0 amps, the charger that came with your GS4 is 2.0 amps. So no you can't get a better charge from your computer.
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Check the logo on the USB ports. Look for one with a lightning bolt. My laptop has specified ports that have higher output for charging.
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Some laptops from MSI are supported by their utility called Super Charger. This boosts the power output but also removes connectivity (I believe). So you won't be able to connect your phone and transfer data.
There maybe be a utility that supports your laptop for boosting charging. Best thing to do is Google around for some programs.
If your laptop is old you're probably out of luck.
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There is a cord that is used for external hard drives on laptops it uses two usb ports but plugs into one drive doubling the power. Just a thought. Only thing is they are usually mini usb not micro but an adapter should do it
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Thanks all! I also have another problem!
I read your answers, so I decided to get a 3 amp car charger for my S4! If the original S4 wall charger is 2 Amps, then a 3 amp car charger sounds good, right?
Unfortunately, my phone gains no charge from it in both of my cards, my phones battery just dies slower when plugged into the car.
Any tips? Thanks!
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Most car chargers lie about their ratings so that could be one problem, the other, is most phones see car chargers as a usb port charger instead of an ac charger so the rate of charge is automatically reduced to usb charging. Somewhere on here was a thread on how to modify a car charger so the phone would see it as an ac wall charger and allow it full output. I believe you have to open up the charger and jump a wire over. Search on here or google it and you should find it.
Could be a lot of things. But remember you phone will only allow its self to charge at a certain rate. Thus, purchasing high amperage chargers will provide no benfit.
High amperage chargers are more for tablets that require more power for their larger batteries.
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Mine does that. I have to reboot it while it's plugged up to my car charger. Thought my charger was bad after taking the MJA update. Still looking for a fix....
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Anyone know how to splice a micro usb cable and attach it to the dock do I can charge my tablet? Charging via micro usb port isn't working and up need a way to charge the device
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What's a good recommendation for a powered USB hub for my car? I got an easy cap USB stick for my back up camera for my Nexus 7 car install, but it doesn't get enough power from the OTG cable
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I haven't installed it in my car yet.
But my bench USB-OTG testing has worked quite well so far.
Plugable 7-Port USB 3.0 SuperSpeed Hub with 25W Power Adapter and Two Ports with BC 1.2 Charging Support for Android
https://www.amazon.com/gp/product/B008ZGKWQI/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
If this as an AC adapter, how do i power it in my car?
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would something like this work?
http://www.ebay.com/itm/USB-Hub-4-P...ending-USB-Front-Charging-Cable-/282068157343
or even this?
http://www.walmart.com/ip/Onn-4-Port-USB-Hub-for-Car/36854848
Anyone?
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