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Hi,
Saturday I had some time to open the HDMI dock (for Galaxy Tab 7) and mod it to have alternative power input.
After that I was able to use the HDMI output and USB host at same time. The setup is:
- HDMI out for Samsung TV
- wireless USB keyboard
- external HDD connected with a powered HUB
In this setup I was able to use the keyboard and video files from external HDD while watching on TV screen.
The only problem is that the "MTP Application" notification is still there and the tablet is not full powered from external power supply, it discharges slowly the battery.
After some investigation I've seen that on the original charger there seems to be some resistors between USB lines and Vusb and GND. If I connect the original charger (not inserted on power outlet) the tablet is full powered and the MTP Application is not displayed (when I put the tablet in dock). After that if I remove the cable and insert the USB host cable everything is OK and tablet is full powered with USB host and HDMI working.
The docking is powered with 5V/2A PDA DC adapter.
When I'll open the dock again I will make some picture.
Your are welcome for questions and suggestions.
Emil
HOW MUCH?
Cant believe this is my first post on any message board EVER but what better reason! First i would like to know how much would u charge to make the modification for me? I would provide the dock and any other materials that u need of course. Secondly, since the dock works with ALL tab variants(PERSONALLY ONLY TESTED WITH P1000, P7100, P6200, P6210 BUT 99% CERTAIN), u might want to post your development in every other versions forum. I believe this would generate a LOT more interest in this project because there actually has already been a few threads created in which several attempts were made but no one could find the magic combo(plus it could mean a few extra bucks in your billfold!). I waited to post in hopes that u would update with pictures and/or a tutorial but still would rather you perform the actual surgery. Congratulations on accomplishing what samsung should have done from the start...a TRUE multimedia dock! I guess the only suggestion i could offer is if it were possible to actually add a few usb ports into the base of the hdmi dock itself, which is how i feel samsung should have made it originally...definitely not a priority.
Here are a few reference threads if interested & i've already provided a link in each one pointing to your original post for those interested (hope u dont mind!)
http://forum.xda-developers.com/showthread.php?t=1610832
http://forum.xda-developers.com/showthread.php?t=1155065
http://forum.xda-developers.com/showthread.php?t=1149442
Sorry, but I can't do this for you.... It's complicated.
Now I work to found a solution to put an USB connector on the dock and to put a power connector to.
The big problem is that the tab enters on MTP mod when powered this way. As described on other threads there is a way with USB lines to activate full external power.
When I'll have a full modification dock I'll put some pictures and instruction for that.
waiting for pics and further info please...
Galaxy Tab Dock modified
Now I have a full functional dock, modified.
So, after receiving the Galaxy Tab Plus media dock from ebay I've found that I can change the tab fixing part with the one on the old Galaxy Tab Dock.
So, now I have old Galaxy Tab multimedia dock full compatible with my Galaxy Tab Plus.
Then I modified the dock to include standard power jack and standard miniusb connector for OTG.
The USB Host is powered from the external power supply, this helps to not discharge the battery when using tab and slow charging.
I made some pictures with details for connections and modification.
You can view at:
http://www.flickr.com/photos/buzdumil/sets/72157630734690786
There was some work to do...is not very easy. The best thing that can be done is to make a PCB. That PCB, at in my pictures, could be fixed near metal weight. Also there the clips of the case need to be cut, but there is no problem because at same position exist screws for fixing.
The problem with MTP application started when power connected or tab inserted on dock remains. But now is easier to use external HDD, usb keyboard & mouse and television to watch movies.
That's amazing, Emil! That's the dock accessory Samsung should have sold in the first place. After looking over your pictures, I'm ready to go order a soldering iron and get to work!
Hi emil b just letting you know i was playing around with my dock and found how to get rid of the red x from when power is applyd.
First connect power and get red x....
Then disconect the earth and re connect it again..
This forces AC Charge mode...
No resisters or shorting data lines are needed..
So good for being in host mode...
All you need to do is put a on/off switch inline on the earth
Where you supplied power to the dock.
Doesnt need to be inside the dock..
Give it a try and let me know...
Just have to play with it and hit switch a couple of times...
Im looking at all options concerning the modification of this dock. One question that comes to mind is: If I only use the red and blackwires to send power to the USB connector, will I still be able to use the OEM 30 power connector??
OP, I am going to attempt to make this modification myself. Would you be able to provide any additional instructions/suggestions to the pictures up on Flickr?
Thanks,
cypher
mr_esmit said:
Im looking at all options concerning the modification of this dock. One question that comes to mind is: If I only use the red and blackwires to send power to the USB connector, will I still be able to use the OEM 30 power connector??
Click to expand...
Click to collapse
No because the origonal charger has the resisters on the data lines...
you are better to add just power to pin 7(9) and earth to pin (1)30..
then add a otg dongle..
Hello there folks,
I notice that the touch input of my One E8 behaves weird while charging. It responds to some other input for a specific input. For instance when I'm unlocking my phone and I press 3, 8 or 9 is taken as the input, or when I press send on WhatsApp, the menu gets activated.
The issue is not specific to any app and is seen in general throughout the phone while charging. What is strange is that I see this issue only while charging from a USB charger either connecting it to the wall plug or a USB port on my PC (happens in both cases).
I also have a charger that has a direct cable (no USB port) and if I charge with this, I don't see this problem. Any one else seeing this strange issue? Any solutions to this?
Thanks in advance
--Leonard
abhishekl191288 said:
Hello there folks,
I notice that the touch input of my One E8 behaves weird while charging. It responds to some other input for a specific input. For instance when I'm unlocking my phone and I press 3, 8 or 9 is taken as the input, or when I press send on WhatsApp, the menu gets activated.
The issue is not specific to any app and is seen in general throughout the phone while charging. What is strange is that I see this issue only while charging from a USB charger either connecting it to the wall plug or a USB port on my PC (happens in both cases).
I also have a charger that has a direct cable (no USB port) and if I charge with this, I don't see this problem. Any one else seeing this strange issue? Any solutions to this?
Thanks in advance
--Leonard
Click to expand...
Click to collapse
Touch issues occur when the phone receives an incorrect amount of voltage (usually high) from the supply while charging. It's best suggested to use the supplied charger or one of similar readings to not encounter such issue.
Hello there,
I see the problem with the supplied charger even if I connect the cable to a USB port on my PC. But I don't see the problem on a Samsung charger which is a direct one (not having a USB connectivity).
Regards,
Leonard
Sent from my HTC One_E8 dual sim using XDA Free mobile app
You might wanna talk about this to the customer service then. Chat online on the HTC website, or visit a sevice center.
screenshot with the ghost touch https://docs.google.com/file/d/0B8OXMhPXhM0LdTZnblBOd2xtanc/edit?usp=docslist_api
second screenshot https://docs.google.com/file/d/0B8OXMhPXhM0LZEg2ZGNNQ1R1MlE/edit?usp=docslist_api
i have the same problem. i turned on pointer position from developers menu and ghost touches appear mainly near the app drawer icon location. it stays like this until i lock and unlock the phone. also while typing pressing the space bar presses another letter with it. it's almost impossible to type anything. this problem appeared just today without changing anything or installing new apps.
Hello everyone,
I would really like some help advice/experience from other here regarding the HTC U11. I was just using the device normally one day and the screen went black completely. I think the touch screen is dead as well, as it doesnt seem to respond when I attempt my usual pattern unlock from muscle memory. I am sure the device is still working normally as I had... accidentally connected to emergency operators, could still use Whatsapp Web and my PC does show HTC U11 but I am unable to change the option to MTP to transfer my files.
Does anyone have any advice on how I can access my data through enabling usb debugging/ changing the connection mode to MTP? Apart from repairing the screen only.
While I am not sure about the software options. I am attempting to output using a Type C to HDMI hub to output display and use a mouse to access the phone. Since it was rather hard for me to find answers about the compatibility and usage so I was hoping to get some experiences so can quickly attempt this method when the few cables I purchase arrive.
1) Are these type C to HDMI cables generic? I have seen some articles saying there are type C to hdmi with MHL and others with digital output and I confused if those I bought will work with the U11. (Seller says works to Macbook, Xiaomi, Huawei P20)
2) Are these adapters simply plug and go? Do I have to unlock the screen or install any firmware (as I clearly dont have a screen haha..)? Does this apply for both the HDMI output and using a mouse
3) Would I specifically need a SMART TV with HDMI to get output out or any monitor with HDMI would work fine?
If anyone have a working U11 and using HDMI to Type C would really love to hear from you!
Thank you for any advice/experiences in advice!
I am using my USB to USB-C Cable form my Nexus 5X, which works flawlessly with that one.
With the Pixel, however, I don't get it showing up in Transfer mode (as a drive).
When using PTP mode it becomes visible, but of course only showing picture folders.
Cable works 100% fine as far as I know, also with the Tool-All-In-One etc.
Any idea how enable USB-Transfers from PC to Pixel3?
fronten said:
I am using my USB to USB-C Cable form my Nexus 5X, which works flawlessly with that one.
With the Pixel, however, I don't get it showing up in Transfer mode (as a drive).
When using PTP mode it becomes visible, but of course only showing picture folders.
Cable works 100% fine as far as I know, also with the Tool-All-In-One etc.
Any idea how enable USB-Transfers from PC to Pixel3?
Click to expand...
Click to collapse
When the pixel3 is connected did you look in the settings to see what USB mode is selected? You might need to change the mode to File Transfer. Also you have to unlock the phone after connecting it before it shows up. I'm not near a computer so I can't give the exact details.
EDIT: When the phone is connected go to Settings/Connected Devices/USB. Then in the section "Use USB for" make sure File Transfer is selected.
Thank you for the reply.
There's a "Yes" to all of that: USB mode is "Transfer Files", set directly via Setting but also checked on unlocked screen.
PC explorer shows Pixel3 in PTP mode (images folders only), which vanishes completely when switching to file transfer mode.
With Pixel 3 we are able to change which device controls USB connection, - i can't change this for this connection, it stays in "This device" (P3), "other device" (does this mean PC?) fails and reverts to "this device".
Is this a setting relevant only for Phone-to-Phone connections?
My Pixel 3 is doing this now with Android Auto after I got the February update. I can't change USB mode and Android Auto only launches on my phone instead of my car head unit. If I try to manually change the the USB mode to anything other than charging it immediately resets like nothing happened. If I change the control type to "other device" it reverts to "this device" and grays out the option.
I have tried a few cables, two different cars, and enabling USB Debugging but nothing helps. I think Google did this and we might have to wait on a fix.
As a follow-up, I've seen some people with this issue fix it by getting a USB C cable that is 65 ohm, or getting a USB 3.1 SS+ cable. I have one on order and will update when I receive it.
zeropants said:
As a follow-up, I've seen some people with this issue fix it by getting a USB C cable that is 65 ohm, or getting a USB 3.1 SS+ cable. I have one on order and will update when I receive it.
Click to expand...
Click to collapse
Thank you!
So this is a confirmation that this indeed is a bug needing some fix?
I did a quick look around and couldn't really find such a cable - what would I search for specifically?
I did not get confidently lucky with 65 ohm, USB 3.1 or SS+ terms..
(Also, i am quite sour about Google not including an USBCtoA connector.)
fronten said:
Thank you!
So this is a confirmation that this indeed is a bug needing some fix?
I did a quick look around and couldn't really find such a cable - what would I search for specifically?
I did not get confidently lucky with 65 ohm, USB 3.1 or SS+ terms..
(Also, i am quite sour about Google not including an USBCtoA connector.)
Click to expand...
Click to collapse
From my view it's a bug, but I don't have much to confirm with, just personal experience. I'm going to re-check Apple Carplay too to make sure it's not a vehicle fault.
Another failure.
So far I've tried 4 cables, including a USB-C 3.1 cable. I've tried 2 different cars with Android Auto support. No combination has enabled AA on the cars head unit.
I plugged my Pixel 3 into a laptop work USB 3 support and it connected to file transfer.
As a follow up, my wife's iPhone XR connects to Car Play almost instantly.
I found out my issue is specifically with Android Auto, and I have since fixed it. I had to remove all system updates to Android Auto and let it update and setup from scratch.
I finally managed to get my Pixel 3 recognized for file transfer.
Device manager showed a problem with the Portable Device - MTP device (yellow attention sign). I tried to update that driver, failing, even with the one from google directly .
However, i got the hint that missing system update (Windows) might be the culprit.
So I checked, installed the 2 it showed, and .. .. Pixel 3 showed up in device and file manager.
My Samsung S9 has had some screen damage and the touchscreen mostly does not work.
In order to navigate it I must use a mouse that I connect to the phone using the supplied USB C- A adapter.
I wish to get my phone repaired but I wish to backup all the data upon it first.
If I plug my phone directly into my PC, it asks for my permission to allow the PC access. However, since the touchscreen does not work properly, I cannot press the button to accept.
I could not plug both the mouse and PC simultaneously.
So I bought a USB-C hub. (Actually I've bought several, none of them have worked, this latest one is the most expensive and I had hoped it would work - (https://www.amazon.co.uk/gp/product/B07ZVKTP53/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1).
It has a separate port for USB-C Power Delivery and a separate one for data.
I plug the attached USB-C cable from the hub into my phone, and then I plug my mouse into a regular USB port, my charger into the USB-C PD port, and another USB-C to A cable from the USB-C Data port on the hub into a USB port at the back of my (new) PC.
Now my computer does not recognise my phone at all, nor does my phone seem to acknowledge it is connected to a PC. The mouse still works upon the phone and it charges fine through the PD port. If I plug the phone straight into the PC, it is recognised, so I do not think the problem lies there. The hub seems to block communication between the phone and PC.
I would like to backup my data and get my phone repaired. If anyone can solve the USB-C Hub issue or propose another solution to my problem then I would be grateful.
A mouse and keyboard will take priority over anything else in a hub.
I'm betting the hub's power is 2000mA or 2.0 Amps.
What does your fone charger state its power is? Add the mouse, keyboard, and fone's milliamps together. If it's more than the hub's power pack supplies....
In this situation, I would use Vysor, this will defo solve your problem, it allows you work with your fone on your pc/lappy by providing a lovely window that is a duplicate of your fone screen, you'll be glad you found this!!!
I can provide an old cracked version I used for my emergencies, if there is no objections?
Then you'll only need the mouse to use as your finger
Google Vysor. case closed lol.
Pachacouti said:
A mouse and keyboard will take priority over anything else in a hub.
I'm betting the hub's power is 2000mA or 2.0 Amps.
What does your fone charger state its power is? Add the mouse, keyboard, and fone's milliamps together. If it's more than the hub's power pack supplies....
In this situation, I would use Vysor, this will defo solve your problem, it allows you work with your fone on your pc/lappy by providing a lovely window that is a duplicate of your fone screen, you'll be glad you found this!!!
I can provide an old cracked version I used for my emergencies, if there is no objections?
Then you'll only need the mouse to use as your finger
Google Vysor. case closed lol.
Click to expand...
Click to collapse
Hi
Thanks for your reply
It's not a battery hub, but just a USB-C hub (check the link). Power comes from the PD USB-C port which is hooked up to my phone's original USB-C charger.
It also fails to work even when a mouse isn't attached to it.
I will look into Vysor. Also thought about the possibility of using a standalone bluetooth mouse which would free up the cable.
Your fone will suck the life out of a poorly powered hub, by using vysor, your pc/lappy mouse will work your fone using vysor, best app I've ever seen for working with broken screens, just plug phone direct into lappy, vysor works if you've no screen at all!!!!!
Use
Vysor
www.vysor.io
...Njoi
Dont pay for mouses/hubs in this scenario. Just pay for a top quality tool. I would place this as my number one android tool for ANY fone.
Again, if all your doing is data recovery (saving your stuff) I have a patch for an earlier version to unlock full version I swear by, you could use this once if only to try before you buy
The hub supports 85W fast charging directly from mains, which is what it is getting.
How do I enable USB debugging specifically for the app?
I have enabled it in developer options but when I connect my phone via USB to my computer as per the Vysor app, another window pops up on my phone asking to allow USB debugging. Ask there is no mouse attached to the phone at this point, I am unable to allow it.