Hey folks.
I've been thinking about this for a while and I wonder if it is technically possible.
Basically I want to build my own desk dock. It should have HDMI output, charging and USB otg for connecting peripherals.
I'm not sure if it's possible this way, though.
I was thinking of using an otg y cable (with female usb and female microusb) as a base. The regular female USB would be hooked to an externally powered USB hub (just for the sake of having more than 1 USB port available). The female micro USB would be connected to a slimport HDMI adapter (to allow using it with a monitor or TV.
If anyone knows about the technical possibilities please let me know. Maybe someone has tried something like this before?
Thanks in advance
Sent from my Nexus 4 using xda app-developers app
If I'm not wrong - n4 can't do usb otg and slim port hdmi at the same time.
What a pity!
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Related
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
Sent from my Nexus 7 using Tapatalk HD
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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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.
Sent from my SGH-I727 using xda premium
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.
Sent from my Nexus 7 using xda premium
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.
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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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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?
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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......
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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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Guyz is there any way for hooking up The Long-Range Wireless USB adapter (Device ID:AWUSO36H) with my Nexus 7 with the help of OTG cable... Any suggestions to TRY.....!!
Try it... That's my suggestion....
Sent from my SPH-D710 using xda premium
Did anyone manage to use a usb thumb drive with the regular OTG? I have one laying around in my room and AFAIK I need a custom rom to make the OTG feature to work. Since I am waiting for the official CM 10.2, I still run stock, I just wanna know if I have to buy the Y type...
Sent from my Nexus 4 using Tapatalk 2
The Nexus 4 cannot output 5v through the micro USB port.
The Y cable is your only way.
Look for the one with a male and female micro USB also with a female USB.
Sent from my Nexus 4 using Tapatalk 4
You should be able to use the cable you have but you would need to run it through a powered USB hub
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Can someone tell me if this could work with OTG on nexus 4?? http://viewitem.eim.ebay.gr/I9500-I...B-Host-OTG-HUB--CARD-READER/161105862553/item
no it will not the nexus 4 simply put does not put enough power out to power anything
OfficialTylerBig said:
no it will not the nexus 4 simply put does not put enough power out to power anything
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Click to collapse
If you answer to my post i have to thank you but i also have to comment that this hub has AC plug in for power!!!
http://forum.xda-developers.com/showthread.php?t=2181820&page=80
Look at post #795. If your linked device is like marhensa's, it should work. However, it's hard to determine exactly.
Of course you need to flash ziddey's kernel for any OTG to work.
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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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