yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 10.1 Accessories] hamann:
Sorry to dig this up. I read the whole thread and completely lost. I'm looking for the cable that can use a usb drive or thumb drive and charging at the same time. Is this your project? I hope this project is what I'm looking for. I know Iconia A500 can do all that but the Samsung screen just amazing. Thank you.
[Galaxy Tab 10.1 Accessories] drklahn:
Host + Charging

Hi folks,

Thanks for all of the excellent work leading to these custom cables.

I'm trying to build a Host + Charging cable for my SGT 10.1, but haven't yet gotten it to work. I'm able to charge (after installing the Pershoot kernel), but the USB host side doesn't work at all. I've also built one of the standalone OTG cables, but it doesn't work, either. I've got a functional OTG dongle that I purchased from a 3rd party vendor, but I haven't been able to find the difference between my cables and the 3rd party cable.

Has anyone had any recent success creating a Host + Charging cable that allows simultaneous connection to a powered USB hub AND charging of the SGT?

Another question, for anyone who might know: what is the precise nature of the power signal that the SGT needs in order to avoid the red X? My Host + Charge cable doesn't send the right amount of power, so I'm getting the red X. If it's possible, I'd like to build the Host + Charge cable such that the Pershoot kernel is unnecessary.

One thing that isn't clear to me is the stuff that's happening on the software side-- does the stock kernel disable charging when host mode is enabled?
[Galaxy Tab 10.1 Accessories] fpdragon:
Hi all!

thx for the pinout and the circuits...

I need to charge with more than 500mA and have usb host at the same time.

I tried to do the following:

I opened a docking station http://www.amazon.de/Samsung-Origin...2XDI/ref=sr_1_2?ie=UTF8&qid=1329509694&sr=8-2 and tried to solder on the pcb a circuit to charge the tablet. The plan was to be flexible and plug in to this hacked docking either the common USB host adaptor or the SD adaptor. The dock has a 30pin female connector so this would be easy. But how to initiate the 5V for charging...

I found pin 7/8 (V_BUS_1) and pulled it to 5V. (and GND off course...)

The problem is that the tablet does not recognizes the power supply as power supply. Instead it does the usb charging with 500mA max and is recognized as USB device.

So I tried a kind of the "Universal Charging" circuit from the first post. I took 33k and 10k and shortcircuited the D- and D+ as mentioned. Tablet was charging again with full power but the SD/USB devices were not recognized. Ok, this should be clear because it seems that the adaptors are needing the D+ and D- pins but still no solution of the problem.

Next I started to measure...

I noticed that the SD adaptor has 20kOhm between pin 14(ACCESSORY_INT) and GND. Strange... I expected 20kOhm between pin 13(ACCESSORY_ID/USB_ID) and GND.

Can somebody explain what exactly pin 13 and 14 is for?

Is it possible to pull both with 20kOhm to GND and charge full speed and use the adaptors?

Does the circuit "USB Host w/ power" (first post) allow to charge with more than 500mA?

Hope somebody has the time to make it clear...

thx
[Galaxy Tab 10.1 Accessories] mailings:
Hello all

I would like to hack one of this cables to bypas the MHL signals so I can use one MHL to HDMI adapter like this

I have one Galaxy Nexus and one Tab 7.7. What I would like to achive is to be able to use the same MHL to HDMI adapter with both devices.

I have not found in the post the resistor values to enable the MHL out at the TAB and, so far, I have not found the proper microusb pinout for MHL

I would apreciate any help.
[Galaxy Tab 10.1 Accessories] _strauch_:
Is it possible to order a USB host w/ power cable anywhere in the internet or have to build it myself?

I searched on amazon, ebay and some chinese sites like deal extreme but i can't find anything.

I want to use it for my samsung keyboard, so i can charge the tablet and use the host for usb sticks.
[Galaxy Tab 10.1 Accessories] ericlmccormick:
I designed that cable but it was completely theoretical. From what I have read, no one has gotten it to work and I have not even tried myself.

Good luck
[Galaxy Tab 10.1 Accessories] AndreFpolis:
USB Host or Charging

Anyone that make the "USB Host w/ power",

could charging without connect USB Host ?

I don´t need to use simultaneously, but need to use the same cable without disconnect from the tablet.
[Galaxy Tab 10.1 Accessories] zuberio:
I'm pretty sure that won't work. You can find a dual use cable on ebay that has a switch in it for the two modes (OTG Host or Charge).

Thanks for the research and post ericlmccormick. Based on your diagram I put together a DIY for the Universal Charging Inline Cable.

http://xdaforums.com/showthread.php?t=1675042
[Galaxy Tab 10.1 Accessories] shane4581:
So the simultaneous part doesn't work

But has anyone successfully made a cable with possibly a switch in it to switch from Host mode to charge mode without having to unplug the 30 pin from the tab?
[Galaxy Tab 10.1 Accessories] _strauch_:
i see such a cable on amazon and/or dealextreme.com

Von meinem Smartphone gesendet
[Galaxy Tab 10.1 Accessories] THEDEVIOUS1:
usb host, hdmi & charge...AT THE SAME TIME!

Just wanted to point out a thread posted in the "galaxy tab plus accessories" forum. This may have already been done before but i figured it would be much bigger news if so. XDA member "emil_b" claims to have modified the multimedia dock to simultaneously do hdmi out, trickle charge the tab , & serve as usb host! In case some of u may not know, the same dock works with ALL tab variants(PERSONALLY ONLY TESTED WITH P1000, P7100, P6200, P6210 BUT 99% CERTAIN) so if this proves true, this should be shared with all the other tab forums in hopes that it can be made into an actual product.

Here is the original post

http://xdaforums.com/showthread.php?t=1677845
[Galaxy Tab 10.1 Accessories] MRBR7:
Great news.

Can somebody please explain to me the wiring difference between "Universal charging" (with 10k and 33k resistors) and the "Samsung Origonal charger" which is 2 amps.I would like for somebody to post up a wiring picture similar to first post to explain how each works and how is wired different to each other.

Are any resistors used in the origonal charger like the 33k and 10k?

If so what are they?

Thanks...
[Galaxy Tab 10.1 Accessories] zuberio:
'Universal Charging' is an adapter that tricks the tablet into thinking it's connected to the 'Samsung Original Charger' Basically it puts the same voltages on the D+ and D- pins that the 'Samsung Original Charger' does. That's all there is to it.

I made a DIY with pictures for the universal charging adapter here if you want to build one.
[Galaxy Tab 10.1 Accessories] MRBR7:
OK but what i want to know is how is the origonal samsung charger wired to the tab?

If i build my own "usb host with charging" and decided to use my samsung 2amp car charger to charge the tab then are the 33k and 10k resistors used?

Really just need to see exactly how the origonal charger is wired and does it use resistors or not....

Thanks for your reply
[Galaxy Tab 10.1 Accessories] zuberio:
Oh, you want USB Host w/ Charge on your tab 10.1.

I know people are able to do it with their nook, however I don't believe it's possible for the samsung galaxy tab 10.1. Not unless you get a kernel that allows it (maybe). Testing this could fry the charge circuit on your tab. You basically want a powered USB hub and need to mod it so that it sends power upstream to the host device itself (depending on the hub, this could be as simple as shorting a diode). You don't use any 10k or 33k resistors becase you need the D+ and D- lines for data transfer.
[Galaxy Tab 10.1 Accessories] MRBR7:
RE USB HOST AND CHARGE AT SAME TIME>>>>

Thanks to ro_explorer and emil_b

For posting up info about hpw they did this...

Now im the 3rd person to do it???..

Open up dock...

The 12 pin connecter is as follows..

Pin 1 = 30 Shield Connector

Pin 2 = 28

Pin 3 = 27

Pin 4 = 13

pin 5 = 19

pin 6 = 18

pin 7 = 17

pin 8 = 6

pin 9 = 7

pin 10 =3

pin 11 =4

pin 12 = 1+2

(Thanks to who found this not me)

Looking at this you want pin 1 for neg and is the LH pin in picture.

Then you want pin 9 which is 4th pin from RH end..

Solder a Black wire to pin 1 (negative)

Solder a Red wire to pin 9 (positive)

This part is the hardest bit as can short them to the other pins next to them..

Check with test light by applying 5v power to your new wires and

testing the surrounding pins aroun pin 1 and pin 9.

when got this bit correct and no shorts move to next step.

if not try use flux and wire to remove excess solder from surrounding pins.

(i had to do this too!!!) but o.k. now..

Now Glue your wires to the board and make sure they dont come off.

You really wouldnt want to be redoing this soldering part after doing it once..LOL

When glue is dry re assemble the case around your dock with a hole for your new wires to exit.

Basically Apply power to your new wires from 5v power source @0.5amp

a common usb source would do.

plug your origonal wall charger into the dock.

do not plug it into the wall at the other end.

(youve now by passed the power supply)

plug the dock into the tablet and check status of battery and you will see AC charging.

Now remove the wall charger from the dock..

Still is charging!!!!!

(have got to this step and works but need to wait for glue to dry before i can check usb host at same time)

Now plug in your usb host dongle and watch a movie from your powered hdd whilst your tablet charges....

From what ive read a couple of people have done this and works..

Tried from galaxy tab 7.7

Good luck..

will post up more info when my glue dries and try it out properly..

also got to post up some pics of my soldered wires..

---------- Post added at 02:17 AM ---------- Previous post was at 01:22 AM ----------

O.K. update..

charges fine with usb host watching movie from usb hdd...

Update doesnt require the origonal wall charger to be plugged in.

just connect usb dongle but do not connect hdd yet..

plug in power source to new wires and comes up as charging.

then connect hdd via usb port and apply power to hdd.

go to usb mass storage device and mount the drive..

open your directory and select a movie..

now play movie..

go to bottom RH corner and select settings..

then select battery status..and will see battery is AC charging.

Yes It WORKS>>>>

Can not just connect powered hdd and power and expect it to all work need to follow this exact order..

Power first then Usb hdd second...

Anyway maybe im not the 3rd person but not many people have given a run down of how to do this and Ive tested it and Works..

Now i can enjoy movies out on the road travelling and not have to worry about charging probs...
[Galaxy Tab 10.1 Accessories] MRBR7:
Hope this explains it!
[Galaxy Tab 10.1 Accessories] MRBR7:
O.K. Been away for a few days on the road since i posted this...

Have tried it out and found Need to set to "Flight Mode" to best save battery power..

Using the new power source ive found after watching for 4.5 hours 2 full length HD movies from Hdd via usb otg host

Ive only lost 10% battery.At first was a bit bummed out as loosing power but realised actually this is very good.

Never needed to disconnect the Hdd the whole time and kept a good enough charge to continousley watch anything for ages..

Got my Break out board today..

Will look at weather the line out works at same time..
[Galaxy Tab 10.1 Accessories] MRBR7:
edit
[Galaxy Tab 10.1 Accessories] elempe:
Tab 2

Maybe someone already knows - is schematics mentioned in this thread valid for Tab 2 (P5100) too?

Now I'm interested in charging it from regular USB port.

What I know - it charges from some noname 2A car charger, I don't think in this charger are some resistors to connect data wires.

Maybe it is enough to cut data wire from computer to tab?

Cheers :)
[Galaxy Tab 10.1 Accessories] MRBR7:
I .
[Galaxy Tab 10.1 Accessories] splotz:
HDMI, USB Host, Audio out Charging

Does someone know if it is possible to have with TAB 10.1 or Note 10.1

HDMI, USB Host, Audio out and charging at the same time?

Like a "real" dock.
[Galaxy Tab 10.1 Accessories] nilesat:
impressive

that is really brilliant

cant wait to try it

thank you
[Galaxy Tab 10.1 Accessories] easy2boy:
Thank you gonna try now to own my cable
[Galaxy Tab 10.1 Accessories] shuiguo:
Thank you for sharing, very detailed, This stuff is so interesting,
[Galaxy Tab 10.1 Accessories] rorzad:
really good stuff
[Galaxy Tab 10.1 Accessories] androidfr33k:
Thanks so much for the great thread you started.

I would only need this dongle for two reasons, 1) to run a mouse or keyboard and 2) Most important to use the Rx/Tx/gnd/Vcc to jtag a completely bricked Samsung Galaxy Tab 2 7 inch or any other series with the same configuration pinout.

Can Jtag be done with this cable and the right tools/software?

If the board is dead and you power the PCB though the dongle and use a micro controller board to access the boot area would it not be possible to recover it this way?

I was able to do tis with my Android WM8652. Save both Uboot and CFE etc.

With the WM8652 I would power on and in a terminal such as putty hold down the CTRL + C + Enter to get to a command prompt before it actually finished the kernel boot.

I am guessing if it won't power up at all then no way to use this method unless the PCB board itself could be powered through the dongle then access it though the Tx/Rx.

If its just a NAND flash like a flash drive then I don't see why this method would not work?

Thanks
[Galaxy Tab 10.1 Accessories] jaoropez:
I have no idea how to solder things, and this stuff seems intense, been looking around at the many DIY threads. Does anyone have a usb host+charging cable/dock they would be willing to sell? tab is getting old, maybe one of you has moved on and has above mentioned accessory lyeing around? Am willing to pay reasonable amount, as I would like to be able to hook up my tab to my dslr and have my tablet be powered/charging so I can create timelapse that controls the dslr when in usb host mode. thanks in advance
[Galaxy Tab 10.1 Accessories] KrisPerry:
eg

Ok I'm guessing this will work similar to the galaxy tab 2. Is there anyway to switch between USB charging and ac charging eg for most tabs it's just a matter of shorting the Data pins
[Galaxy Tab 10.1 Accessories] mr_esmit:
Ever get around to this?? I know it been a year, but you can never lose hope ;)
[Galaxy Tab 10.1 Accessories] mr_esmit:
Got another question. Let's say I added a female usb (a type) plug to the OEM samsung dock (w/HDMI) and later connected an externally powered usb hub to that connector, would I be able to access any peripherlas connected to the hub and charge the tab and use HDMI all at once???
[Galaxy Tab 10.1 Accessories] eddai:
Thanks for the useful info !
[Galaxy Tab 10.1 Accessories] shapiror06:
What is the possible cause of the red X over the battery when wired for USB Host w/ Power, and the USB host works fine but the tablet does not charge?
[Galaxy Tab 10.1 Accessories] _strauch_:
anyone checked this cable? http://www.ebay.com/itm/OTG-USB-Ada...-Tab-Note-8-9-10-1-10-1N-10-1V-/360569066713? I hope it is not toooo offtopic :).
[Galaxy Tab 10.1 Accessories] Aliendex:
Hello people,

I need to make a box that contain a "full-optional" docking station for my P3100, is this scheme a good start?

Because i need 2/3/4 usb host ports at the same time I decided to buy/dismember/integrate a USB HUB with an external power supply, so i put it in the scheme to make clear that component is in the dock and not outside!

What do you think? Does it work in a Galaxy Tab 2 7.0 P3100? :highfive:

Sorry for the white (DATA- ) cable
[Galaxy Tab 10.1 Accessories] renatobs:
Hey, did you buy the cable? I am interested in it too!

Thanks in advance,
[Galaxy Tab 10.1 Accessories] Andromepat:
Hey guys,

I want to use my Tab as a retro game console. I use the 7" Tab's Dock with the 10.1 holder, everything fits and HDMI output works fine. I can plug my XBOX360 Wireless USB Receiver into the dock and this works too. But HDMI needs power to work.

Is it possible to mod a 30pin-to-USB cable as shown in the opening post, wiring diagram "USB Host with power" and use this one plugged into the dock. Don't want to open the dock and mod it inside.

Add: So I worked through the whole thread (puh) and think, that these posts by THEDEVIOUS1 and MRBR7 in combination with emil_b's photos will lead to success.

---------- Post added at 05:00 PM ---------- Previous post was at 04:53 PM ----------

Have not tested this, but it's just a 30pin-to-USB and a hub - all in one cable. Don't think there can be any issues.
[Galaxy Tab 10.1 Accessories] bobn4burton:
So I'm interested in a USB Host (OTG) plus charging. From the first post and the bit of thread scanning...it appears this is possible. Couple questions:

1. Does the 30 pin connector pin-out and possible cable options from the first post work on the Galaxy Tab 2 10.1?

2. When doing USB Host + Charging, does the tablet charge in slow mode (trickle) or does it charge in fast charge mode?

3. Where is the best place to buy the 30 pin connectors in the US if I was going to make my own cable?

Thanks...!!
[Galaxy Tab 10.1 Accessories] MRBR7:
Yes the charge and host at same time Does work..Ive confirmed it here already as have many others..

It charges as "AC charging" which is full speed (not trickle)..

Yes will work with most tabs only one i know of that wont work is older model origonal 7"

10.1,8.9,7.7 works..

Best place to buy 30 pin plug is online from "Kinetica"..

My advice would be to buy a "Break out board for Galaxy tab"..from Kinetica site..

Or can modify a Dock but Break out Board would be easier to solder as bigger....

have fun and post up some pics when you do it..
[Galaxy Tab 10.1 Accessories] Andromepat:
@MRBR7: I thought about something like the diagram attached. (° = Port no.)

ASCII wiring diagrams rule! ;)
[Galaxy Tab 10.1 Accessories] bobn4burton:
Cool...thanks for answering my questions so quickly! I guess I have one more question before before I start buying parts. There isn't anyway to get USB Host + Charging with a standard cable (or even one from ebay)? Perhaps using a normal OTG cable with a kernel mod or something (ala Nexus 7)?

Just wanted to verify there wasn't an easier method before I start modding up my own cable...

Thanks again...
[Galaxy Tab 10.1 Accessories] Andromepat:
That's what I'm aiming at. Cutting a standard data cable in two and then applying a "circuit" (it's just putting the right wire together and adding one resistor) according the wiring diagram in the opening post. Would be nice, but I'm quite afraid of breaking my Tab.
[Galaxy Tab 10.1 Accessories] MRBR7:
Yes that looks like it would work..

The only issue i can see how ever is PIN 8 is not populated by the origonal docking station.

You can only get Pin 7..but ive done it and can confirm it works.

If you use a break out board you could use pin 8 aswell.

---------- Post added at 05:36 PM ---------- Previous post was at 05:30 PM ----------

Ever pulled apart a cable and looked at soldering wires to it?

Its alot harder than it looks..

seriously Buy a Break out board from kinetica they dont cost much...

or mod the dock..you will definatley need a magnifying glass or wear magnifying glasses to solder it

its still pretty small and the pins are close togther.

after finnished soldering the wires clean up the solder by cutting down both sides of the board with a razor blade.

I did this then tested with a test light the surronding pins by applying power to the new wire and testing the neigbour pins for short circuit.

after this you are good to glue the wires with contact cerment or silicon them in place.

---------- Post added at 05:39 PM ---------- Previous post was at 05:36 PM ----------

you could do it but seriously the standard 30 pin plug is not something i would like to attempt to solder...

maybe you could use a microscope lol...Its so small and the pins are so close togther.
[Galaxy Tab 10.1 Accessories] bobn4burton:
Not to beat a dead horse here...and please don't think I doubt what you are saying...

But I was just about to place an order for a connector breakout when I decided to call up and talk to someone from Kinetica as I figured they'd probably be pretty knowledgable on the subject. Interestingly, the guy I talked to claimed that they've tried tons of stuff trying to get Charging + OTG simultaneously and they can only get it to 'trickle' charge, not full speed ac charging. When he wired power into the aux power inputs and usb data into the usb data pins...he still gets a red x and it just trickle charges.

So if you are really getting yours to work with a full speed AC charging + OTG at the same time...did you wire yours EXACTLY as shown in the first post? Any slight differences at all? Could this be dependent on the firmware version? What hardware and firmware version is your tab? Have you tested by verifying the battery still charges even under heavy usage (watching a movie or gaming for an hour or two)?

Guess I'll just order one of those breakout connectors and try for myself...but it was disappointing to hear the findings from the guy at Kinetica...he seemed like he was pretty knowledgeable in the area.
[Galaxy Tab 10.1 Accessories] MRBR7:
Sorry if i sound like a Broken record saying the same thing over and over but That is how i did it and its definatley AC charging.

Ask the kinetica guy to try add a "externally powered HDD" with only 5v power on pin7 and earth to pin 30..then see what it does...

*Remember to power the drive and your 5v source to Dock/Breakout Board before turning the Tab on...Then Turn it on with everything connected.Dont touch anything,Let it load up into a lock screen and the lock screen will tell you its charging.I will also point out this was done on a 7.7 Tab with origonal ICS Rom..and also worked on Honeycombe...

If you cant Repeat what ive done there maybe a reason such as Kernal changes to newer JB roms...

Theres a Thread about USB Host with charging at same time for galaxy S3 with a mod to resistance value to allow power to travel in 2

directions whilst in usb host mode,this allowed it to charge and host at the same time.

When the S3 was running ICS it worked but when JB OTA upgrade came along it suddenly wouldnt work anymore!..

So if you guys are running the Tab 10.1 or Tab2 7" on JB or running a JB Based Rom I cant garentee it will work..

Other than that it should work on most samsung tablets..
[Galaxy Tab 10.1 Accessories] ArturS13:
This scheme works?
[Galaxy Tab 10.1 Accessories] MRBR7:
Had a look at this before..

Its good, Just had a thought..

If you are going to open up the USB powered hub,

Then why dont you steal power from either its output or input and send it to the tabs power wires.

no need for that additional cable to charge it.

Also I did on one of my updates cut a USB mini cable in half and solder it directley to the break out board.

This eliminated the trouble of usb host cutting out whilst using it in a vehicle driving over bumps etc or getting knocked by kids running around etc. this usb mini cable can be plugged into most usb powerd hubs as the data cable or directley to powered hdds.

only the 30 pin samsung plug to fail..I also put a elastic band around the Hdd to hold the USB mini cable inplace to stop possible disconnects.

After this mod i had many months of trouble free motoring.I use my Tab on the road a bit and access music and family pics etc from hdd so needed to charge at same time as it goes flat using the Hdd.
[Galaxy Tab 10.1 Accessories] MRBR7:
http://xdaforums.com/showthread.php?p=42055329#post42055329

To everyone thats asked me for help with OTG and Charging at same time..

ive made a guide on how to do it in 7.7 tab section.

plenty of pics and explain a little about how to do it..

I wish someone had done this a year ago when i was learning it..
[Galaxy Tab 10.1 Accessories] markq4:
this thread is informative thanks
[Galaxy Tab 10.1 Accessories] gulstein86:
Thanks dude..:good: