Hi all, I have a MK809III tv stick with Android 4.4.2 running. I use it as a mini PC with a LCD screen. I have attached to its USB OTG ports a quadrate 2.0 4 ports USB HUB (google for this and you can see it) , and connected to it, a PS/2 keyboard (using an usbtoPs2 adapter), an usb mouse, a usb ethernet dongle, and a usb sound card dongle. When I use this combo, all works fine, the mouse can drag and select, also wheel works, the keyboard works fine, the ethernet run smooth, and the sound works as player and mic recorder, the only thing not works is to reboot the tv stick, and launch android again (with other MK89III tv stick this also works flawlessly), to get this, I must to unplug RJ45 or usb ethernet. But this last question is not my main problem. The main problem is that I can not make the combo work anyway if I change usb hub model, If I use a 2.0 usb square hub (no name brand) with a little blue led installed, all works fine, but using other hub (I have tested two others), thare is no way to work. The main situation is that the hub stops work, and all item connected not works at all. But commonly, mouse works with a bad behaviour in button response, usb sound disconnects suddenly, or usb ethernet lagg or not works at all. My question is about this behaviour with usb hubs, if there is a special requirements in hardware to match an usb hub with this kind of android devices, or if thare are some drivers that can solve this.
Thank in advance.
Solved
I have solved the two main problems in order to use my MK809III RK3188 as a mini pc with usb hub and rj45 ethernet. The hub must to be a chip on board one, no an all-in-one glued ultra-cheap type, this is a mark of better quality and response, then you can conect keyboard/mouse, usb or ps2 with usb converters, usb sound, and usb pendrives. The ethernet must be an ASIX AX88772C, this a true usb ethernet 100mbps (7MB/s real) device, since I use it there is no lag, no boot errors, no delays or shorts in Tx/Rx. That´s all.
Related
Hi,
i have a Cube U23GT tablet. It supports OTG. The tablet can be charged only trough DC in with an adaptor, so not trough usb port. I have an OTG cable, and if i plug with that a mouse in, or keyboard, it works perfectly. I saw on youtube some videos where people connected mouse and keyboard at the same time to their tablets, for example: youtube.com/watch?v=benblX95ORM
So as i saw this video i thinked: all i need is an USB HUB, i bought one: logilink.eu/showproduct/UA0138.htm?seticlanguage=en
I plugged the HUB in trough OTG and the result was: the LED of the hub lights are on, but then, when i try to plug the mouse OR (not just "AND") the keyboard, it wont work. The infra of the mouse is lights too but the tablet dont detect it, i cant use it.
So can you tell me what can be the problem? Its not a powered HUB i know, but on the videos that i saw (for example what i linked here) arent powered hubs too, and works.
If you can, please help me, thanks!
anybody?
same
benhoze said:
anybody?
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Same here...i think android don't support usb hub...
Hi,
i have a Cube U23GT tablet. It supports OTG. The tablet can be charged only trough DC in with an adaptor, so not trough usb port. I have an OTG cable, and if i plug with that a mouse in, or keyboard, it works perfectly. I saw on youtube some videos where people connected mouse and keyboard at the same time to their tablets, for example: youtube.com/watch?v=benblX95ORM
So as i saw this video i thinked: all i need is an USB HUB, i bought one: logilink.eu/showproduct/UA0138.htm?seticlanguage=en
I plugged the HUB in trough OTG and the result was: the LED of the hub lights are on, but then, when i try to plug the mouse OR (not just "AND") the keyboard, it wont work. The infra of the mouse is lights too but the tablet dont detect it, i cant use it.
So can you tell me what can be the problem? Its not a powered HUB i know, but on the videos that i saw (for example what i linked here) arent powered hubs too, and works.
If you can, please help me, thanks!
[SOLVED] Android Tablet -> OTG -> USB Hub -> Gaming keyboard/mouse not working
Greetings.
I can plug an external-powered 4-port USB hub to Kiano Core 10.1 Dual 3G and it is recognized by the system and USB Device Info app. But as soon as I connect a gaming mouse or keyboard that simulates an USB hub (with mouse and keyboard attached to it so you can bind keys to mouse and clicks to keyboard), the system freezes and only unplugging the hub or waiting some time (if only keyboard is plugged to the hub) can help. After waiting some time, the system unfeezes and the app recognizes the keyboard. About the mouse, it completly freezes the system and only a hard reset helps.
On my Galaxy Note 3 and Xperia P, the hub, mouse and keyboard work without problems.
Both mouse and keyboard work with the tablet if plugged without the hub (mouse is recognized as both mouse and keyboard so I cannot use the on-screen keyboard, but this is another problem).
I have a rooted original rom.
Can anyone help with this?
EDIT: USB pendrives work on the powered hub. The problem may be considered solved, because I found another unpowered USB hub and both mouse and keyboard work on the unpowered hub.
Hi!
Please, give me advice how to find out problem root with some USB devices that can't be detected/used with my android device.
There is device like car rear view mirror with android. Phisung E06 or any of exactly same devices under different Chinese brands. Every device have touchscreen, front view camera, rear view USB (!) camera, one SIM card LTE, GPS and mini USB connector. Rear view camera connector is 2,5 mm mini jack instead of regular USB connector. miniUSB connector is for power supply and for firmware update from PC. These devices are based on MTK MT6735 chip that have only one USB port (as you see there is two USB connectors and only one phisical USB port) and 2 . Android is 5.1 Lollipop. Кernel version is 3.10.65+
I run dmesg in android console and found following. miniUSB port is connected to MT6735 regular USB port whereas USB camera is connected to inter chip USB port that normally used to work with second SIM card. I soldered DIY 2,5 mm mini jack to USB female adapter and tested it. With USB active hub with external power supply and my DIY adapter I successfully connected and used rear view camera, keyboard and mouse . They are work well. However USB card reader and U-BLOX USB GPS reciever are not detected by android. So I used USB Device Info app to check how my devices are detected by kernel USB subsystem. I was able connect hub to hub to hub and plug my devices to any port of them.
-USB Device Info app on the kernel tab view always give correct HUB hierarchy and point of connection hub/port of camera/mouse/keyboard and it's detailed info (vendor, name, etc.).
-USB card reader is shown too connected but none of my SD card recognized. No info in USB Device. No SD Card files in any of subfolder of /storage folder.
-U-BLOX USB GPS reciever was not detected at all. It's power indicator is lit still. GNSS Commander can't use reciever showing it's offline status. (P.S. Reciver is OK. It is used with PC and OTG port of my android 5 tablet)
The question are:
- why SD card is not detected in card reader
- why U-BLOX USB GPS reciever is not detected at all
I expect both of them are requre data to be recieved from host to control usb peripherial device. Unlike, for example, camera or mouse who do not require any data from host.
Please, advice me what log I need to check, what special apps I need to run, what adb and console commands can help me.
Thank you
preloader
could you plz send me the Preloader because I f*ck up my system and format the whole system :S
Hi,
I want to control my Motorola Moto Z Play over USB Debugging with my Notebook. The Problem is that I must confirm that the Notebook is trustable, but my Touchscreen doesn't function. So I must confirm it with a keyobard or mouse after I connect it with the Notebook.
I testet a USB Hub: Smartphone -> OTG Adapter -> USB Hub -> Notebook (usb male to male cable) + Keyboard.
The Keyboard has functioned and my phone was charging, but the confirm button doesnt come. I also couldn't see the phone as an adb device.
Can I solve this Problem or do I have to buy a new screen?
Best regards
motozmod
And what exactly is your laptop?