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Pimping Out Samsung Galaxy Tab 2 7.0 - USB host & cam questions

Hello everyone.
I am currently modding Samsung Galaxy Tab 2 7.0 for car instalation and everything seems to be great except I have problems with two things:
1) As the tab will be also my main music player I would need an USB host from time to time (check: http://www.expansys.si/samsung-usb-adapter-for-galaxy-tab-series-no-30-pin-to-sd-slot-229630/ ). It would be hard to switch that adapter with power supply just for the time I need to stick USB in it so I am asking if anyone knows if it is possible to have both active at the same time: power supply and USB host? Or if anyone has some other interesting idea how to transfer data to tablet asap from time to time? Please note that it will be really hard to reach it when installed.
2) Since the tab has back camera (which is useless to me in cars interior) i was thinking if there is any possible way to get that camera out of the tab with some extender or something? I've been looking at the interior of a tablet and the camera doesnt look to be attach in any other way than just a flat cable. Any ideas?
Thank you guys for your help in advance!
Make love, not war <3
miHah

It sound like this will be a permanent installation.
Instead of €22 for an adapter, I'd rather use a breakout and hardwire:
http://www.kineteka.com/galaxy-tab-connector.aspx
This will also allow you to wire the earphone output also.
Yes, with many devices you can charge and do host mode at the same time.
It's mostly a question of convincing your device to play nicely with a non-standard operation.
You can just bring out the USB leads or hardwire in a hub for more options, like a keyboard.
I'd use a DC converter circuit board hardwired instead of a cigarette lighter adaptor.
Something like this, maybe: http://www.lightobject.com/LM2576-High-Input-7V40V-Switching-5V-Power-Module-Regulator-P549.aspx

I think somewhere in the Tab 10.1 forums, someone figured out the proper wiring for a powered USB host adapter. 90% certain that would also work on Tab 2 7.0

Nexus 7 in car install help

Have nearly completed my car install but came across a few hicups which i hope some can help me with.
First
I have purchased a fiio e17 for the digital to analogue converter but realised that once it goes flat it wont turn on without manual hands on with the power button, even with power fed to it. So i assume that i wont be able to use the e17 am i correct ?, are there no work arounds anyone can think of. Perhaps the headphone dock could power it on once power is detected ??.
Otherwise i will have to get the e10
Second
I have been trying to figure a way if possible to power a usb hub externally and have a usb otg cable Y cable connected to the nexus and only feeding power to the nexus and not the usb hub seen as its already powered. Now i have successfully wired the hub for its own power but find i cannot feed or redirect power to the nexus without using the timur kernel. Is it possible at all to have it feed power to the nexus only without the need of custom kernels ??.
Thanks.

lenovo miix 2 8 please help many questions- please please

Hello guys I need your kind help on the following questions
1- I bought an otg cable and found that it keeps disconnecting a lot, like when I connect a usb hard drive, or mouse, or xbox controller it keep every now and then disconnecting,
2- the sound volume is really low , especially when I play music
3- is there a software that can tell me about lenovo driver or software updates
4- when i press the power buttom to turn off the display youtube disconnects, i was wondering if i can play youtube while display is off, as I like to listen to youtube sometimes and don't care about the screen to be on
kindly please tell me in detail as I am still new to windows tablets especially drivers and software
i was wondering also is there a special forum for win8.1 tablets that is good for getting help

Mouse should be fine, but an xbox 360 controller is rated at 400mA of current draw officially and hard disks regularly peak at 500mA or more, the miix is only rated for 100mA on its USB. You need a mains powered USB hub inbetween tablet and device if you are going to use big power hungry devices like that, or one of those USB cables with split data and power connections and put the power connection to a mains adaptor or battery pack (you can buy battery packs with USB ports for charging phones).
Sound I have no idea.
Does the normal windows update facility not serve your needs? Just check back every few days.
Pressing the power button depending on power plan is putting your device to sleep or hibernate, all CPU activity is suspended in both of these modes.

SixSixSevenSeven said:
Mouse should be fine, but an xbox 360 controller is rated at 400mA of current draw officially and hard disks regularly peak at 500mA or more, the miix is only rated for 100mA on its USB. You need a mains powered USB hub inbetween tablet and device if you are going to use big power hungry devices like that, or one of those USB cables with split data and power connections and put the power connection to a mains adaptor or battery pack (you can buy battery packs with USB ports for charging phones).
Sound I have no idea.
Does the normal windows update facility not serve your needs? Just check back every few days.
Pressing the power button depending on power plan is putting your device to sleep or hibernate, all CPU activity is suspended in both of these modes.
Click to expand...
Click to collapse
can u send me link for org with power cable

hykhleif said:
can u send me link for org with power cable
Click to expand...
Click to collapse
I haven't seen an OTG cable with it integrated, but there is no reason why you couldnt use this with your existing OTG cable:
http://www.newtech.cat/w/en/1473-USB-2-0-Cable-Double-Power-Injector--2xAM-AH--1-2m.html
On this cable there is 1 USB socket and 2 USB plugs. The black plug is a normal USB data connection which would normally plug into a laptop or something, you would simply stick that in the OTG cable, the white plug is wired for power only, this would go into anything capable of supplying 5v in a normal USB connector whether that be one of the wall adaptors supplied for charging phones or something like this: http://www.amazon.co.uk/Digital-Additions®-Battery-Extender-Batteries/dp/B002PHC1XU

Best portable setup I have ever experienced (Samsung DEX)

I would like to share with you my setup which is like a dream come true. I have always imagined that one day I'll have single device that I will use throughout the whole day and now it finally is possible.
I bought an opened box HP Elite X3 Lap Dock of Ebay for 230 AUD in a pristine condition for my Galaxy Note 10+ (European, Exynos). Affter I have received it I had some trouble to connect my phone to the Lap Dock - the original HP cable was missing and the one from Samsung did not work. I finally figured it out - It has to be a USB C cable that will allow video transmission, quick data and power transfer - to sum up it has to be at least USB 3.1 Gen 1 that provides 5 Gb/s, 5V, 3A (Gen 2 provides 10 Gb/s). I bought https://www.amazon.de/gp/product/B01GGKYT7M/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1 and viola it works!
It is almost a perfect solution - I have been able to switch from Windows laptop instantly, I have prepared a whole lecture with PowerPoint on this setup, I use it from time to time for gaming (love the PSP games and bluetooth controller). All is extremely compact, premium made and useful. The whole set combines: Galaxy Note 10+, HP Elite X3 Lap Dock, Amazon USB C cable, 8Bitdo, Samsung 45Watt Charger, and couple of extras like additional HDMI cable with micro HDMI adapter, USB C to A cable, USB C hub with HDMI, 2 x USB and USB C sockets and foldable bluetooth keyboard with touchpad. All of these fit well in a 11 inch Apple Macbook Air neoprene bag
Connecting the HP Lapdock to the TV with HDMI (using HDMI to Micro-HDMI adapter) and then connecting phone wirelessly with it allows to display on TVs without Miracast.
In order to get regular size font while using DEX I am utilizing MacroDroid macros: Receive Notification DEX App - Change system font to 1.2 and Remove Notification DEX App - Change system font to 0.8 (my default)
The known issues are:
1. Lap Docks speakers does not work - I had to change in settings of DEX and in Developer Settings not to route sound via USB and now when connected sound is played from the phone
2. Touchpad buttons are not recognized - it works perfect other than that (gestures, zooming, scrolling, two fingers for right button)
UPDATE
Audio via lapdock speakers works! - in order to make it work just plug in the phone to the lapdock without turning it on and then turn it on by holding battery button and power button simultaneously for 10 seconds until it boots. When its on in volume panel chose play via display device and enjoy B&O sound.
There is a bad news too - after updating to Android 10 the touchpad is practically unusable - they have change the way it operates and now it moves incredibly fast up and down an extremely slow from left to right - the only option is to use the phone as touchpad which luckily is very good.
The new whole set consists of:
1. HP Elite X3 Lapdock
2. 11 inch laptop bag - https://www.aliexpress.com/item/327...chweb0_0,searchweb201602_9,searchweb201603_55
3. Magnetic USB C 3.1 Gen 2 Adapter 10 Gbp/s 100W PD - https://www.aliexpress.com/item/32985884761.html
4. USB C 3.1 Gen 2 10 Gbp/s 60W 0.5 meter cable for connecting phone - https://www.aliexpress.com/item/32679851391.html
5. Surface Black Pen Loop Holder for attaching cable to lapdock - https://www.aliexpress.com/item/32886514875.html
6. Samsung 45W Charger - https://www.samsung.com/us/mobile/m...t-charging-wall-charger-black-ep-ta845xbegus/
7. USB C 3.1 5A 100W 2 meter cable for charging - https://www.aliexpress.com/item/33027971950.html
8. Thin, foldable bluetooth keyboard with touchpad - https://www.aliexpress.com/item/32782607699.html
9. 8Bitdo N30 Pro 2 Gamepad - https://www.aliexpress.com/item/4000144168333.html
10. USB C Hub - https://www.aliexpress.com/item/32998985227.html
11. USB C cable 3.1 Gen 2 87W 0.5 meter - https://www.aliexpress.com/item/33010968788.html
12. HDMI to Micro-HDMI adapter for tv out - https://www.amazon.com/Cloud-Relays-Micro-Hdmi-Adapter/dp/B07117G478
13. USB A 3.0 to USB C OTG Adapter - https://www.aliexpress.com/item/32828548648.html
14. Micro USB to USB C Adapter - https://www.aliexpress.com/item/32828469071.html
15. USB C to Micro USB Adapter - https://www.aliexpress.com/item/32884655748.html
16. USB C to USB A Adapter - https://www.aliexpress.com/item/32891979893.html
Updated, matured setup:

I can't get my Aussie exynos to work unfortunately.

You have to turn of lapdock first, give it a 10 sec after it has booted than connect it with a usb c 3.1 gen 2 cable (a short one, cables longer than 1 meter seems mot to work) and it should be fine. I am using a 50 cm UGreen cable, sometimes it is required to hard reset the lapdock when it does not pair properly by holding the power button for 10 sec.

An Update:
Finally audio via lapdock speakers works - in order to make it work just plug in the phone to the lapdock without turning it on and then turn it on by holding battery button and power button simultaneously for 10 seconds until it boots. When its on in volume panel chose play via display device and enjoy B&O sound.
There is a bad news too - after updating to Android 10 the touchpad is practically unusable - they have change the way it operates and now it moves incredibly fast up and down an extremely slow from left to right - the only option is to use the phone as touchpad which luckily is very good.

Maybe we can send a request to Samsung to fix the problem with the touchpad because we are many users with it.
Anyone with the tab s (5e or 6). Can check if having same problem?
Thanks

Can you please check underneath your Lap Dock what the model number is?
E.g. V8H07UT#ABA or Y1M47EA#ABH, etc.
I am having the latter also with a European Exynos Note 10+ and I can't it to fully connect (no display).
Thanks!

I bought the HP Lap Dock V8H07UT#ABA for my Note 10+ Exynos (Portugal) and was never able to have it work. I bought many different cables but didn't change a thing. The same cables used to connect my Tab S4 (Snapdragon) to the HP Lap Dock worked flawlessly.
So you are very lucky to have a working setup!

Ok, I got seriously lucky.
Found the mainboard of the V8H07UT#ABA online, and it arrived today.
Replaced the mainboard of my Y1M47EA#ABH with it, and I now have a working Lap Dock with my European Exynos Note 10+. Happy camper here!

JayRayMee.NL said:
Can you please check underneath your Lap Dock what the model number is?
E.g. V8H07UT#ABA or Y1M47EA#ABH, etc.
I am having the latter also with a European Exynos Note 10+ and I can't it to fully connect (no display).
Thanks!
Click to expand...
Click to collapse
Mine is Y7D37PA#ABG and it works fine with european Galaxy Note 10+ Exynos

What kind of USB-C cable are you using? The one that comes with the Lap Dock or another brand? Is Developer Mode enabled ? Thanks.

Currently I am using a cable from Ugreen witch has a proper length and is very well made https://m.pl.aliexpress.com/item/32...detail&spm=a2g0o.cart.0.0.307e3c00rTzEtg&mp=1
It also fits in nicely with a magnetic usb c adapter that I have attached to my lapdock https://www.aliexpress.com/item/32985884761.html?spm=a2g0s.9042311.0.0.27424c4dZXuZyS

Just now I have found one strange thing - I have change the cable I used with and older one which was working fine and now it did not - what did fix this issue was switching the ends of the cable the end that was going into lapdock went to phone and vice versa. I know it should not make any difference since these cables are reversible but it did mabye that will help somebody.

Well, now we got wireless dex!

Upgraded set, now based on Nexdock Touch - https://www.reddit.com/r/SamsungDex/comments/jp7940/my_perfect_mobile_dex_setup_completed/

I am trying to make the Lapdock work with LG V30 - wirelessly I have succeded to make connection as a secondary screen - so the phone screen is projected to the lapdock.
Now I want to be able to use the keyboard and touch pad: I use a ugreen PD100W cable and I can get the notification on the phone that external kb, mouse and sound is detected. no image goes to the lapdock screen. Sound does though on both LG and HP elite x3.
I think the cable might be to blame...
I tried then to connect wirelessly - I can get the image on the lapdock, the kb even works, but I cannot open apps, no mouse is detected (touchpad does not work) Sound too.
Do I need a cable that says 4k on it?

lapdock 1 P/N - Y4T07AA£ABA
lapdock 2 P/N - Y1M47EA£ABU
I bought one then another hoping to make it work, but they have similar behauviour - when connectd via cable, the screen go dark blank, but I can see that it actually works, just a black picture is displayed
Also, anyone knows what is the difference between lapdock models above?

SM-T510 Tab A 2019 10.1 Otg with charge and data?

Hello guys,
Does anyone knows if there is a otg cable/hub that can power the tablet and be able to use data like usb connected at the same time?
Thanks

The 2019 tablet does not need this, since the port is USB type C albeit USB 2.0; I have connected mine to a hub and have pass-through charging and data. OTG is not really a thing any more since USB type C came about.

Prostheta said:
The 2019 tablet does not need this, since the port is USB type C albeit USB 2.0; I have connected mine to a hub and have pass-through charging and data. OTG is not really a thing any more since USB type C came about.
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Click to collapse
Can you share the type of hub you have been used?
Is the charging speed fine?

Kingston Nucleum. This tablet is in my car and the hub receives power from a 12-14v converter providing USB C PD and USB 3.0 fast charge. Ultimately, the hub defaults charging voltage to that of the lowest device connected. In my case a Sandisk SSD and a Meizu HiFi DAC Pro. This generally means that charging is slow, however it depends on your configuration. I'd say that the charging speed is fine, however it only charges when the car is running or in accessory mode and the tablet is always on in that state. As such the excess power it uses to charge whilst running is only a little more than it uses. It might charge faster if I power the hub from the USB C PD port, however I don't know if this is just pure amps or whether it negotiates higher charging voltages. I don't know if the Nucleum hub allows negotiation of higher charging voltages.

Prostheta said:
Kingston Nucleum. This tablet is in my car and the hub receives power from a 12-14v converter providing USB C PD and USB 3.0 fast charge. Ultimately, the hub defaults charging voltage to that of the lowest device connected. In my case a Sandisk SSD and a Meizu HiFi DAC Pro. This generally means that charging is slow, however it depends on your configuration. I'd say that the charging speed is fine, however it only charges when the car is running or in accessory mode and the tablet is always on in that state. As such the excess power it uses to charge whilst running is only a little more than it uses. It might charge faster if I power the hub from the USB C PD port, however I don't know if this is just pure amps or whether it negotiates higher charging voltages. I don't know if the Nucleum hub allows negotiation of higher charging voltages.
Click to expand...
Click to collapse
Nice, i'm using for the same purpose.
In my dash car
I'm also using MacroDroid for automation.
My issue right now is how should i leave the tablet when i turn ignition off.
I Think i will just shut it down, but i don't like to wait 30 seconds to but again when i turn it on.
What do you do in your case?

I'll have to check out MacroDroid. I'm currently set up with AutoMate, however there's a few annoyances which I think need ironing out. Vanilla Android Auto might not be the most exciting, but it's certainly the most friendly for driving safety.
I leave my tablet as-is. AutoMate automatically wakes the tablet into car mode on USB power and goes to sleep when it loses that. My car (Chrysler 300C) has accessory power for 30s (I think I can increase this in the EVIC) after the ignition is turned off which keeps the charger energised, and by extension the tablet. I'm not too bothered about having to boot up the tablet if it does discharge its battery to shutdown. I think it's maybe a week or so for it to do that, likely less when the tablet ages. As long as it charges and runs on the supply happily I think we're good. In that instance, I might have to see whether an auxiliary power bank would be a workable option. Not at this stage though. Bear in mind that most modern car head units still take about the same amount of time to boot as an Android tablet anyway.
I'm having minor USB issues myself, however this is down to the cable I need not being available. A lot of USB C "charging" cables are only pinned for power and not data. This might be part of any USB C issues you might be having. I myself need a USB C male with a tight 90° or 180° turn, out to a USB C female for the hub's pigtail. I might have to make the choice to fabricobble myself a USB cable just for this purpose....
This is a photo of the install, prior to me wrapping it in 3M brushed black steel vinyl.

I'm updating all of my comments in various threads on this. My setup with the Kingston Nucleum hubis having minor issues. The tablet still needs to be powered up before I turn on the car or at least supply power to the hub. It seems that if this is done the other way around, that is, to power on the car accessories (and hence the hub) then it seems to end up staying as the "device in charge" of the USB network. The tablet charges (slowly) but doesn't mount the USB SSD drive or the USB DAC. If the tablet is powering the hub (in charge, so to speak) then applying power to the hub via the car accessory supply has it working as expected. This does mean that the tablet ends up with a power drain when the car/USB power supply is powered down which isn't ideal. I've gotten into the habit of turning the tablet off when I park for long periods of time, however I need to boot it up to "take charge" of the USB hub network before I can start the car. It's a bit of a bummer.
I'm unsure whether this is a tablet hardware/software issue, the hub or whatever. Going into Android settings and trying to alter the default USB behaviour returns the message that it "cannot switch roles" or something along those lines. I'm beginning to think that this might be the USB hub refusing to switch/relinquish power supply roles once it has external power and hence not allowing the tablet to mount drives or see connected USB devices. It's weird behaviour, because you'd imagine that if the hub were connected to a laptop this would be a common action.

If it helps, I've read that OTG function is not included by Samsung for their device's USB ports. I've been trying to connect some together to perform file transfers with no success. However, I have been able to transfer and charge simultaneously between my SM-T510 tablet and PCs with the USB configuration set to file transfer.

Prostheta said:
The 2019 tablet does not need this, since the port is USB type C albeit USB 2.0; I have connected mine to a hub and have pass-through charging and data. OTG is not really a thing any more since USB type C came about.
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How to transfare Battery power from Tab to another Android device?