I connect the mouse to HD2 with a USB hub(afford power supply to USB Device),but it did not work.
Do I have to first connect the cable and then run the Ubuntu?
Is it reqeuired that the USB hub must also afford power supply to HD2?
Excuse for my bad English
Do any one know that?
er... Is there any one know that
I have the same problem, im sure its all wired up correctly, I get lights on the devices but they do not work
To all Devs,
May we request to have USB host enable kernel please?
Thanks.
It's not a software issue. HD2 doesn't support USB Host .
AL1982 said:
It's not a software issue. HD2 doesn't support USB Host .
Click to expand...
Click to collapse
Actually it looks like lack of USB host is a software issue. I read in the Linux development thread that USB host is enabled in the HD2 Ubuntu rom..... What I dont know is whether android in its current state supports USB host. Did I read somewhere that USB host is a feature in the upcoming Android 2.3? I am not sure.
HD2 does support usb host. There are kernels in autobuild system that have usb host enabled.
Once the software is setup, (i know only ubuntu) you need to inject power between hd2 and the hardware you want to connect, because our tiny battery can't handdle the 500ma/5V power output needed for most usb hardware.
Search on ubuntu hd2 wiki, you'll find schematics for power injection cable, and people that have succesfully connected keyboards, mouses, and mass storages.
doloop said:
Once the software is setup, (i know only ubuntu) you need to inject power between hd2 and the hardware you want to connect, because our tiny battery can't handdle the 500ma/5V power output needed for most usb hardware.
Click to expand...
Click to collapse
It's not that it cannot handle the power consumption on its microUSB port, it's because there is no way that it can provide power at all (it is not wired to do that), and that's why you have to provide power for all of your USB gadgets with the Y cable, for which you can find the schematics on the htc-linux wiki.
can this be possible?
Theoretically, HD2 should provide power to USB if is switched to OTG. PMIC that HD2 using it (PM7540) is able to do that.
Hi all.
I heard that zte blade has the capability of USB HOST. Also heard it can't power the usb slave device attached to it. Instead of purchasing a usb power hub, i manually tried making a cable which has the similar function but draws power from PC usb port (don't know how far it works. I haven't been successful).
The description of the cable i made is in the picture attached below.
PLEASE SEE THE PICTURE ATTACHED.
For a device with native usb host (such as galaxy note) i guess the device USB-CABLE coupled with USB-FEMALE-TO-FEMALE-BRIDGE is enough to attach slave devices. But for the devices which cannot give power supply in USB HOST mode i assumed and tried the cable which was described in the picture.
Blade was my handset. My friend had galaxy note. I tried connecting blade as a slave to galaxy note with a NATIVE USB-OTG CABLE. But it said the slave device is high powered and needs seperate power supply. In such case i think the cable i prepared might work (if it works) replacing usb powered hub.
Ok, coming to our zte blade device. I prepared a usb female to female bridge and connected it to usb plug of usb cable. Then i connected only the data + and data - of USB PERIPHERAL DEVICE to zte blade. The VCC +5V (red) and GND (black) are supplied from a PC usb port.
And im sure i connected data+ to data+ only. And similarly (data- to data- only) , (vcc to vcc only) , (GND to GND only).
And i tested it with a usb keyboard and a memory card reader. I tested on cm7.1.0 because i heard this build has kernel supporting usb host (? Is it not?). Im unsuccessful with both tests. When i connected memory card reader the led light in the card reader turned on but i cant see any drive/folder/notification on m phone. And with usb keyboard there is not even NUM LOCK led on. Am i missing the kernel support or something. If so pls tell me what kernel should i use.
And is it the thing i prepared wont work at all.??
Please give me suggestions... Thanks.
WARNING :
This is not a (how-to-make-something) post. If you are experimenting with some cables, make sure that you connect the connections correctly. Changing polarity can brick your device. Im not responsible for anything.
I have an andrid. Stick mx2 imito and I have a powered USB hub but I can't configure how I am meant to to get it to read from the hub. I have 2 ports on the stick, one full sized usb and one mini usb .
And In terms of devices I have my keyboard I want to add
1 external usb hard drive
And if I can get it to work a USB wifi dongle
Huh!
Since there is only one full sized USB port, I would think that is the solution. That's how it runs on mine anyway. Connect all your devices to the powered hub. Should be straight forward
So I would need a usb cable male to make? To connect to the hub. Do they exist ? I will try find the cable .
i cantget it to work
so the large usb port. i need a cable from that to connect to the hub? usb port
but i dont have a usb port with the same end? male to male etc
Get a USB powered hib
wakkaday said:
i cantget it to work
so the large usb port. i need a cable from that to connect to the hub? usb port
but i dont have a usb port with the same end? male to male etc
Click to expand...
Click to collapse
The hub will come with one male USB to connect to the stick.
http://gadgets.softpedia.com/images/news/How-to-Charge-your-USB-Devices-Quick-and-Easy-4.jpg
Make sure to get a powered hub so that all the devices can be supported properly.
gsurath said:
The hub will come with one male USB to connect to the stick.
http://gadgets.softpedia.com/images/news/How-to-Charge-your-USB-Devices-Quick-and-Easy-4.jpg
Make sure to get a powered hub so that all the devices can be supported properly.
Click to expand...
Click to collapse
this was an old hub i had, i dont have that wire. its a mini usb to full usb type connection isn't it?
Plenty of such options available
Here is another on ebay. Just search for powered USB hub and choose one
http://www.ebay.com/itm/10-PORT-USB-2-0-EXTERNAL-HUB-W-POWER-ADAPTER-FOR-PC-MAC-WITH-cable-SILVER-/370772094009?pt=US_USB_Cables_Hubs_Adapters&hash=item5653bd2c39
gsurath said:
Here is another on ebay. Just search for powered USB hub and choose one
http://www.ebay.com/itm/10-PORT-USB-2-0-EXTERNAL-HUB-W-POWER-ADAPTER-FOR-PC-MAC-WITH-cable-SILVER-/370772094009?pt=US_USB_Cables_Hubs_Adapters&hash=item5653bd2c39
Click to expand...
Click to collapse
ok great, so the port next to the power socket, is the cable i need to attach to and from the imito android stick? so that will be the main one and any other usb devices can go on the hub.
m confused on where i need to connect from on the android stick. which has 1 full sized usb, 1 mini usb otg socket and 1 mini usb (power)
It should also be possible to modify a USB hub to back feed power to the HDMI stick.
You would then power the hub with a sufficiently large USB power supply to power both the stick and all of the USB devices. In most cases, a single 2.1 Amp USB "wall wart" would work to power everything, unless you are really running something outrageous.
My NX003 (Same as MX1) can be powered from either the dedicated USB power jack, or the MicroUSB (OTG) connector.
So to build something like this, here is what I would do:
1. Obtain a USB hub I was willing to modify (destroy, as far as any other use is concerned)
2. Disassemble it.
3. Remove the input (Host) cable or connector.
4. Attach a short cable with a MicroUSB plug. Connect all 4 wires correctly.
5. Find "The diode" - Buy "The diode" I mean the one that that allows USB power to flow from the host to the peripherals when used in non-powered mode, but prevents power from flowing upstream to the host when an external power supply is used. (see referenced link).
6. Remove this diode, and replace it with a wire, jumper, or solder bridge.
7. Ensure all power circuity in the hub can handle 2 amps. Add solder to traces, or add jumper wire if needed to beef up current capability.
8. Reassemble, and clearly mark so that this hub is never used with anything else.
If the HDMI stick were powered via a coaxial connection, but is still powered by 5 Volts, I'd add a lead and coaxial plug off of the +5 in the hub. you'll have 2 wires, but it will still work. (Watch polarity.)
I have done this successfully for a prior, similar project. Reference Here: (Scroll to section about power.)
http://linuxslate.com/N770DockingStation.html
So why don't I actually do this to power my NX003? I did it an easier way. I bought a Tronsmart Prometheus. It has 3 full USB ports built-in.
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Linuxslate said:
It should also be possible to modify a USB hub to back feed power to the HDMI stick.
You would then power the hub with a sufficiently large USB power supply to power both the stick and all of the USB devices. In most cases, a single 2.1 Amp USB "wall wart" would work to power everything, unless you are really running something outrageous.
My NX003 (Same as MX1) can be powered from either the dedicated USB power jack, or the MicroUSB (OTG) connector.
So to build something like this, here is what I would do:
1. Obtain a USB hub I was willing to modify (destroy, as far as any other use is concerned)
2. Disassemble it.
3. Remove the input (Host) cable or connector.
4. Attach a short cable with a MicroUSB plug. Connect all 4 wires correctly.
5. Find "The diode" - Buy "The diode" I mean the one that that allows USB power to flow from the host to the peripherals when used in non-powered mode, but prevents power from flowing upstream to the host when an external power supply is used. (see referenced link).
6. Remove this diode, and replace it with a wire, jumper, or solder bridge.
7. Ensure all power circuity in the hub can handle 2 amps. Add solder to traces, or add jumper wire if needed to beef up current capability.
8. Reassemble, and clearly mark so that this hub is never used with anything else.
If the HDMI stick were powered via a coaxial connection, but is still powered by 5 Volts, I'd add a lead and coaxial plug off of the +5 in the hub. you'll have 2 wires, but it will still work. (Watch polarity.)
I have done this successfully for a prior, similar project. Reference Here: (Scroll to section about power.)
http://linuxslate.com/N770DockingStation.html
So why don't I actually do this to power my NX003? I did it an easier way. I bought a Tronsmart Prometheus. It has 3 full USB ports built-in.
-
Click to expand...
Click to collapse
Thank you for the informatiom, but its a bit too technical for what i want... but i appreciate you efforts in writing this.
my stick can also power via both usb ports (mini) i have connected the cable from the stick to the hub which has been powered to the mains and it works, but the problem i have is when i put another usb device in the hub, it doesnt detect it e.g. keyboard wireless and i don't think the device has enough power to run my usb 2.0 portable harddrive (not main powered) - how can i get this to work? i have tried connecting this directly to the stick, but it just makes a beep sound. im guessing its lack of power... and i was hoping a hub would help.
my hub is powered 3.5 or 4 watts i believe...
Strange
Wakkaday,
This is very strange. On my MK802III I connect the powered USB hub (4 ports) to the full USB port.
I connect my bluetooth keyboard, 1 TB HDD and USB ethernet to the hub.
I power my Android stick using the 4rth port in the USB hub.
If I want USB audio, I replace the Ethernet/HDD with a USB audio peripheral.
All my peripherals work right out of the box. The only thing I am considering now is to have a separate power supply to the Android stick so that I can use all 4 ports on my hub.
It seems your device is not supporting the peripherals? Are the working when you connect directly?
gsurath said:
Wakkaday,
This is very strange. On my MK802III I connect the powered USB hub (4 ports) to the full USB port.
I connect my bluetooth keyboard, 1 TB HDD and USB ethernet to the hub.
I power my Android stick using the 4rth port in the USB hub.
If I want USB audio, I replace the Ethernet/HDD with a USB audio peripheral.
All my peripherals work right out of the box. The only thing I am considering now is to have a separate power supply to the Android stick so that I can use all 4 ports on my hub.
It seems your device is not supporting the peripherals? Are the working when you connect directly?
Click to expand...
Click to collapse
I'm also trying to use a powered 4 port usb hub with my android stick, but it doesnot recognises the hub. Do i need to have any usb host drivers or change any setting to get it work? My stick is on Android ICS.. Thanks in advance
I'm installing a 2013 Nexus 7 into my car. I plan to load Timur's ROM on it. I have an OTG cable. I've also purchase a USB Y cable and a USB hub which i'm waiting to be delivered. Will a USB Y cable separate power and data? meaning will one USB port have power and the other data? seeing as I want to connect the data to a USB hub, the hub itself will need 5V power too.
I've sketched up a little idea which is attached below. Can anyone tell me if such a thing will work?
The idea is to have +12v ignition wire and ground from the car going to a 12v > 5v converter. The output of that converter will then provide charging power to the Nexus via the + and ground wires on the OTG cable. This leaves the + and - data cables untouched. Then the idea is to take the + and - data cables directly to the USB hub. And seeing as the USB hub also requires 5V power through its main feed USB, i can provide the same 5V power thats coming from the 12v > 5v converter.
This is just an idea, not sure if it will actually work. Other thing I can do i just stick with the Y usb cable.
Any suggestions and comments would be greatly appreciated.
Thanks
Using active USB hub with +5V You do not need Y-cable, just standard OTG cable.
I'm using this config with ElementalX kernel with N7 as external navigator/videoreg.
I'd suggest to browse through "InDashboard install" threads in "N7 2013 -> General" board for other tips and tricks.