After talking to alot of people about my modded dock last year alot of people are still having trouble doing this
and getting Red X and Not charging properly etc..have had recent PMs asking for help so i hope this can help you guys..
Decided to Try make a full guide to OTG and Charging at same time for Galaxy tabs.
I only have 7.73G but would guess it should work for all tabs?
If you have a different Tab or Differnet Rom i cant say it would work for you..Not all Roms are the same..At this stage im on Official JB Rom Stock for 7.7..will test other custom roms and report..
I started with my Kinetica Break out Board (Google it if you want to buy one,about $15 when i got mine)
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I stuffed it last year experimenting and burned out a earth of pin 01 but just soldered a wire to the top and all good now
(ignore the black earth wire when looking at my pics,your black wire should go to pin 01 of board).
*instead of using a female usb port for host i use a USB MINI MALE Plug that can go directly to a HDD or Powered HUB.By soldering this directly to the Break out Board it eliminates bad connections and annoying drop outs whilst watching movies from your USB HDD.
This is how it's wired.
OTG USB
Black 01
Green 03
White 04
Red 06
Power Source (must be 2 amps 5v.. if you want it to work properly)
Red 07/08
Black 30
OTG Host
Resistor 20k 13/15
Thats it very easy..
Before connecting your new set up to the Tab be sure to run a test light and check for any shorts or crossed up wires.just apply power to the wires and check the surrounding pins even if you didnt solder to them(just incase you have a short)once this has been checked you are good to go..
First step is Tablet is OFF and kinectica board is pluged in.
Power is applied to your wires and must be 2 amps 5v..
noted i used power from my external battery for this exercise and is 2 amps source...but you can get from power adapter or somewhere else..
Powered Hdd and usb are now connected to break out board.
This part you will see it trigger charge by plugging in the powered hdd.
(Its not the power wires that trigger it.For advanced people Dont try anything with shorting data lines to trigger charge or the 2 resisters that are used in the stock charger,i went that way and fried my tab and break out board once but got it replaced under warrenty not worth playing around with it.ive tryed switches and everything but found the first way to be the safest way after shorting the board.you can never rely on switches to work properly and they can make contact when closed etc damaging you tab so dont bother trying it)
If you got a Red X over your battery Its NOT charging and you shouldnt see one.You need to restart the tab again and need to get rid of the red x properly before going further.
To Get Rid of Red X is tricky sometimes and can be a pain and give you one every time but sometimes it just starts with out one.you need to be patient and just figure out the right time to connect the hdd on start up.when it works remember exactley when you did it and do the same next time.eg count samsung logo flashing etc..then connect it.a bit of experimenting is required here.
Restart the tab with power added and hdd powered but no usb connected.this time put usb in as samsung logo apears.delaying plugging in the hdd seems to work for me and next time it starts you should see its charging on lock screen.
at bottom Right hand corner you will also see a usb symbal and get a message usb device connected.
Now you must check settings/Battery status to see its "AC Charging".
If not another restart will be required untill you get AC Charging.Remember no .5amp 5v sources these may give usb charging instead of AC Charging..
Once this is OK continue..
Now open paragon or what ever you use and mount your drive where you want it im doing mine automatically as recomended and seems to work good with the new Stock JB 4.12 rom....
this pic you can see the hdd is mounted in my files
Hdd Sizes..
im using a 3TB NTFS on this pics and works fine.Have also tryed 2TB,1TB,500GB and all work fine inc multiple drives at same time with powered hub.
Movies can be played with MX player or BS player for the ones that dont play on mx player like some of the blueray rips
Next step is optional..
I wanted to clean it up abit so dug out one of my old USB Host adapters and opened up the plastic case and removed circiut board.
now glued the kinetica board to the case after checking it all works..
glue drying all day before a i close the case but will look a bit neater than wires and stuff everywhere.
I like this better than the dock i did before..
Any questions fire away..
I havent used host for any other purpose than the HDD.
The guys running DanielHKs Roms are 4.2JB
for NTFS Mounting you will need to use Cryo File manager to first make a new folder at /new folder location.
You will need to mount it exactley there..you can not mount it in /storage as NTFS has problems in 4.2 im sure a fix will be around the corner but i ended up going back to stock 4.12 for a while cause wanted to try the new stock rom and so far no complaints.Im still Rooted with TWRP and have DanielHKs Rom Recoverys so when i get some time ill make a back up then swap roms and post up my results using charge and hdd on those roms(PA and CM10.1).
have done this on ICS before and can confirm both host and charge worked at same time.
Will update more pics of my board when the glue dry and case is back together..
Well plugged it in and played around with it this morning turning on and off repeatedley..
went into charge and hdd every time with no red x.
the only time you will get a red x is when you plug in otg host and charge at same time whilst the tab is on.
I did this to look for solutions and found simply restart it will get rid of the red x..dont touch anything just reset it.heres the red x over the battery..
Ive made it sound simple to do and works with no problems but must admitt ages ago when i first started using host and charge together at same time i also had troubles with drop outs and red x s alot.Really i think soldering the usb cable directley to the board fixed all that,now i never got a red x again.also forgot to mention..When you battery is full and 100 percent or so..if you unplug charger and keep watching movie or whatever you were doing you cant plug charge back in when its turned on and hosting it will give you the red x and you battery will continue to deplete..when you want to reconnect charging again you will have to unmount hdd and restart it with everything plugged in again.
Ive clocked up more hours than anybody would beleive as used this to watch movies whilst working at my old job last year.it was shift work and my co worker would take over and use it aswell when my shift finnished.we had the Tab running the HDD and on Charge 24/7 for 7 months straight..
the tab never had a problem charging all that time as was depleating at same time to keep the host connection.once it gets full i unplug it and let it drain.
well im going to change roms now and test it out on different ones..
will post up to confirm which roms are ok..
Tried out danielHKs newest CM ROM...for a short time
Charging and OTG works fine....
If using es file explorer need to change permissions to root access first and remember forever..
Then make a new folder outside of the /storage directory .
It needs to be made at /new folder.
Then use paragon to set manually and mount this location.
This 4.2 is not working properly and won't mount NTFS in normal place.unfortunately you need to make this new folder on every start up.
Aside from that you can charge and access the drive at same time on this ROM..I'm guessing PA would work the same.I found there is a
/usbdisk0 that looks like it could be used but when I try use paragon manually to select that one it over rides my selection and mounts it as /storage/usbdisk0.This won't work as can't be mounted in /storage so this is why I made a new folder.Not 100% sure but looking again /usbdisk0 doesn't show up in CM file manager
Under / . so I'm guessing es file xplorer is showing it maybe its a shortcut link to /storage/usbdisk0 and that's why won't work...will
Have a look further when I got time...
Will try some More ROMs and post up details...I'm guessing they will all work fine now after CM works...
Well my tab still on charge in CM..
Just checked the battery level and notice it says charging but is depleting slowly....
Sorry but CM doesn't work at moment I need more time to find why and re check everything again...
Will test and report....
hi, would it be possible for the usb card reader kit to be used and where could i tap/put for 5v input so it could charge and same time use the card reader?
Really I would have to say No ..
Best bet would be to get the break out board from kinnetica and replace the board inside the card reader like my pics.the problem with the card reader is the 30 pin connector that is soldered to the origonal board is not populated at the charging pins.to remove it or try to populate it i would imagine you would stuff it up and just easier to replace the board with kinetica one.It only cost me $15..
Best investment i ever made.
other way to do it is to open up a old desktop dock and add power to inside it.
search modding origonal desktop dock samsung for more info..
Adapter available now that can simultaneously charge and have USB hosting Galaxy Tab
An adapter is available now for that has simultaneous charging and USB hosting for the Galaxy Tab. See the blurb written by the designer, Roman Wynnyckyj of LAVA Computer MFG. More info on the adapter is available on the LAVA Computer MFG website (I can't post the link since I just joined). Maybe someone else can post a link to the product page: "xxx://lavalink.com/products/usb-host-charging-adapter-for-samsung-galaxy-tab/"
"Well it is possible to charge and have the Galaxy Tab in host mode at the same time. It took us a good while to figure it out but it has been done.
We have built a little cable with 2 usb connectors on the end - one for charging, one for a USB host device such as a usb-memory stick, keyboard, serial port etc. Note, you can also connect a hub.
The circuitry to do this little trick is quite complicated and requires a state-sequential machine (cpu) to cycle the tablet whenever charge power is applied. The unfortunate negative of this is that whenever charge power is applied the tablet will disconnect all host devices, enable charging and then reconnect the attached devices. If charge power is unplugged later on the host mode is not affected. Charge rate varies with battery level. The highest rate (about 1.7 amps will be achieved when the tablet is near or below 10% battery charge. As the battery becomes more fully charged the tablet automatically reduces power draw. Once fully charged the tablet will draw about 700mA with screen full on (full brightness) keeping the battery at full charge.
Roman Wynnyckyj
Lava Computer MFG. Inc.
LAVA: The Source for Ports - Serial Port Experts
"
I wish it were availiable last may when I modded my samsung dock.
its a real headache soldering onto such small pins...
And where to buy this Lava-Adapter in Europe ?
Lava-Adapter in Germany
ElMartinoAT said:
And where to buy this Lava-Adapter in Europe ?
Click to expand...
Click to collapse
We're working on this. Hope we will have it in stock at the end of September.
dreidreizehn.de said:
We're working on this. Hope we will have it in stock at the end of September.
Click to expand...
Click to collapse
Hi
Do you have any news for that?
You could try this: ebay:161048729496
hoopi18 said:
You could try this: ebay:161048729496
Click to expand...
Click to collapse
It's not the same. The e-bay item only offers (supplemental) power to a USB device connected to the tab (a hungry HDD for example).
This can be simply solved by a powered USB HUB.
The device from LAVA does CHARGE the TAB while using it.
The problem is you cannot usually use the tab (with a USB device attached) and simultaneously CHARGE it.
Will the Lava adapter work with Galaxy Note 10.1 with an identical 30 pin connector?
Should work the GT2 Note 10.1
dxx7 said:
It's not the same. The e-bay item only offers (supplemental) power to a USB device connected to the tab (a hungry HDD for example).
This can be simply solved by a powered USB HUB.
The device from LAVA does CHARGE the TAB while using it.
The problem is you cannot usually use the tab (with a USB device attached) and simultaneously CHARGE it.
Click to expand...
Click to collapse
It should work with the Galaxy Tab 10.1 Note. There is a video on YouTube showing it working with the Verizon LTE Note 10.1. Search for "galaxy tab usb adapter host charge". It is one of the videos from LAVA.
It doesn't work with mine, Galaxy Note 10.1
I've got this Lava adapter, but unfortunately it doesn't charge the tablet while using it. Even if I use an usb hub or the adapter directly.
But the Galaxy Tab 10.1 is charging well while using it...
sent from htc one...
It seems Kineteka (manufacturer of the breakout board seen in the guide) no longer exists. Does anyone have an idea where something similar might be found?
I've got an galaxy Note 10.1 2014 too,and order the lava tl-002 adapter now. It should work, i got a p605,the lte version. I think,the problem is,the p600 (without lte) have a complete different hardware (exynos),i got one before,and some adapters for usb works complete different. In two days,the adapter will arrive and i will report,
Gesendet von meinem SM-N9005 mit Tapatalk
i have installed Samsung Tab2 GT-P3100 in my car,did everything as in diagram for charge and host,but was getting red cross very often,tried one thing and it works for a day already,just connected positive 5v power for host usb socket from main power feed,from 7/8 pin,just left 6 pin not connected,so USB is getting positive lead from main power,not tablet
Great job! I use ready product (TL-002) from Lavalink for connecting my gamepad with the Samsung Galaxy Tab S. It provides OTG/Host Charge for Samsung Tabs. Meaning, you can simultaneously charge and use USB peripherals at the same time. As much as I can see from their specs, there are few elements to consider. Not every Tab supports this functionality (kernel issue), plus, there are 2 components (hardware + 5pin cable) to make a data & charging possible. Cheers!
Related
Just wondering if a typical cell charger can provide enough power to power these three things. (or if it will even work properly)
1 The Phone
2 A USB flash drive
3 HML adapter
What I want to do is connect power to the USB splitter male (I already have a wall plug to USB female adapter) then with the USB female ends I will connect a USB flash drive and then use a male USB to male micro-USB cable to power the MHL adapter. The phone goes to the other micro-USB end of the MHL adapter.
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I want this for two reasons. 1 So I can play media from a flash drive to a TV or monitor and 2 (if this will even work) use it to connect a USB to XLR cable so that I can record with a better quality microphone to my phone.
I realize that the phone being able to recognize and use the flash drive or microphone may be an issue but I can take a chance on that if nobody can confirm if it will or will not work.
BTW: if you have not already noticed, we are finally starting to get some reasonably priced MHL adapters on fleabay now. They are ranging from around 20-26 CAD (one in picture is 26)
I would like to know as well, as that sounds like a great alternative to carrying around DVD's and stuff, maybe even an externally powered harddrive, would need extfat or ntfs support though for large files.
Sent from my GT-I9100 using XDA Premium App
Linux reads NTFS hard drives and flash drives fine, so I am hoping that Android should also.
I was planning on getting the MHL adapter regardless anyway, and the other cables that I would need would only be like 10 bucks. So I am wanting to try it out since, like you say, opens up more options for portability that may replace other devices or at least take up less space.
I was mainly looking to see if I would hear a show stopper of why not to do this, like if this set up could damage something that is connected.
K3VL4R said:
Linux reads NTFS hard drives and flash drives fine, so I am hoping that Android should also.
I was planning on getting the MHL adapter regardless anyway, and the other cables that I would need would only be like 10 bucks. So I am wanting to try it out since, like you say, opens up more options for portability that may replace other devices or at least take up less space.
I was mainly looking to see if I would hear a show stopper of why not to do this, like if this set up could damage something that is connected.
Click to expand...
Click to collapse
You will need a proper usb to go cable to connect the flash drive or hdd, i have connected a flash drive to my phone without any problems..
I would think you would need a custom kernels or ntfs-3G modules for the kernel you are using.
The big thing is if the phone can deal with being charged, output hdmi and connect to a HDD over the same usb port at the same time?
Maybe a powered hub?
Also wondering if there would be enough bandwidth on the bus to support that all.
The big thing that would be good for me is that I could buy a cheap self powered hdd, load it up with movies and stuff and watch it while at work where there's a lot of down time, and being able to charge and use tv out at the same time would mean I could watch the iplayer or something on the tv without having to worry about battery life!
Hey, connect a mouse and keyboard as well and your phone is basically a normal computer!
Sent from my GT-I9100 using XDA Premium App
Good idea. This powered hub is almost as cheap as the splitter cable and should take care of any power requirements.
As for the on-the-go cable, I have different angled micro male to usb female cables already so that I can help take stress off the jack when using it while charging. My USB flash drive does not power up with this cable. I just assumed it needed external power. What is different about the OTG cable, did they twist some wires or are mine just meant for charging if they are not working ? All the pins are present and the cable is thick, so no reason why they would not just connect everything internally.
Thanks for the replies so far.
K3VL4R said:
Good idea. This powered hub is almost as cheap as the splitter cable and should take care of any power requirements.
As for the on-the-go cable, I have different angled micro male to usb female cables already so that I can help take stress off the jack when using it while charging. My USB flash drive does not power up with this cable. I just assumed it needed external power. What is different about the OTG cable, did they twist some wires or are mine just meant for charging if they are not working ? All the pins are present and the cable is thick, so no reason why they would not just connect everything internally.
Thanks for the replies so far.
Click to expand...
Click to collapse
In order for usb to go to work you need a special cable, its got a special pin that's grounded or floating or has a few different values depending, the cables are very cheap on eBay or there's guides on how to make them.
OTG won't work with generic cables im afraid.
I just want this idea to work myself :d
Sent from my GT-I9100 using XDA Premium App
Im sitting here with a SGS2 with a USB kb, mouse, and a flash drive connected to it.
SGS2> (usb to go cable) > Powered hub > Mouse + keyboard + flash drive.
To get random devices to work (not hubs, input devices) you will need to add the device ids, see this thread for more info, more info and some device/vendor ids and a huge list of almost every device/vendor id
Attached is a rules file with logitech and some other vendors, add and expand as needed!
Now I need to buy a micro USB > many micro USB's and a mhl cable!
The powered hub is a must or stuff just wont work due to the power draw.
Im looking at picture of the MHL adaptor, and they all have a USB port for passthough, so we can defo at the very least charge while outputting via it.
The big question now is if you can daisy chain and do MHL and OTG at the same time!
Well, unless on a lucky chance the USB port will work with a splitter, you cant do MHL and OTG at the same time. A real shame
Thanks for the updates and links veyka. It also looks like the OTG cables do not charge the phone with the jumpered pins, so I will have to make sure and mark the OTG cables when they get here.
I should have the rest of my cables arrive in about 2-3 weeks and will post an update of what will or will not work. Sounds like the OTG cable alone should work with the USB to XLR cable for a microphone, as long as I can find a way to get the phone to recognize it. Though it would be nice to charge at the same time as well which the OTG does not support.
Do you know off hand what the headphone jack will accept for inputs ? Will it take TRRS or TRS audio in as well ? I am just looking at more options for XLR to the phone for connectivity without needing a mixer. Then I will use a mixer as well to see how much of a difference the balanced XLR out will make.
K3VL4R said:
Thanks for the updates and links veyka. It also looks like the OTG cables do not charge the phone with the jumpered pins, so I will have to make sure and mark the OTG cables when they get here.
I should have the rest of my cables arrive in about 2-3 weeks and will post an update of what will or will not work. Sounds like the OTG cable alone should work with the USB to XLR cable for a microphone, as long as I can find a way to get the phone to recognize it. Though it would be nice to charge at the same time as well which the OTG does not support.
Do you know off hand what the headphone jack will accept for inputs ? Will it take TRRS or TRS audio in as well ? I am just looking at more options for XLR to the phone for connectivity without needing a mixer. Then I will use a mixer as well to see how much of a difference the balanced XLR out will make.
Click to expand...
Click to collapse
In the end android should support anything linux does, you might need to build a kernel module (driver) or find someone that will for you.
You can get pretty much any input device going with the links above, but other stuff, I dont know im afraid
Hope lives eternal.
No clue im afraid
No problem bud. You have been more than helpful already. I already have a plethora of cables and devices for recording on laptop and PC with Windows and Linux. My Android uses for recording are so far purely just for practicing so that I have it down in case something of interest is created. So ease of use and portability is the main factor.
It also interested me just to be able to find different ways of recording since so much of it is done through software these says. The more knowledgeable I am with cables, signals and processing, the more options that I will have available to me. Though I still like to mic an amp then process afterwards.
Hi All,
I was wondering if anyone had any insights in to this problem I have been having.
Briefly, I have the 4g lte verion on EE's new network. I purchased the official MHL/HDMI adapter which works fine and the video is outputed to my sammy 50inch tv fine. The issue I have is the battery drains while doing so. I belive this may to due to the phone outputting more than it is drawing from the power source. Any thoughts ?
I spoke with Samsung tech and they said a number of people have started to report this issue and they are currently testing/investigating. If this is indeed the case seems a pointless acessory as a long video would possibly drain the whole battery, Im yet to test the full drain time.
Secondly, with a 3rd party docking cradle with spare battery slot which purchased from amazon (http://www.amazon.co.uk/eLifeStore®-Samsung-Desktop-Charger-Docking/dp/B008PPRGFY) also does not charge phone properly. Even with the orignial charger in the ac port (or usb port) . The phone reports as charging but stays the same or decreases. Charged directly from the socket it is fine. Strange!
Any help or thoughts would be greatly appreciated.
Thanks
Ian
It's common. Mine did that too! I switched to my old S2 charger, problem solved
Thanks Ill try that out, any idea why that works ?
lawboffin said:
Thanks Ill try that out, any idea why that works ?
Click to expand...
Click to collapse
No idea man? A design fault maybe? All I know is that my phone took for f#*%ing ever to charge with the USB type wall charger. I pulled it out of the socket and plugged my other other one in that was sitting right next to it and it started charging? Checked a few minutes later and it had climbed considerably so I pulled the USB cable out of the new plug and kicked it under the bed where it now lays resting not to be used again LOL.
USB plug/cord works perfectly fine? So I use it on the computer. My laptop even charges the phone via the USB cable faster than the socket plug (which is usually the opposite - as I am sure we are all aware). So yeah I would say poor design or defective wall plug or both or something? Wasn't going to send my phone back because of it. 2second decision problem solved Samsung phone is great!
Im having exactly the same problem.
I have an s3 on orange and have the same mhl adapter conected to my tv.
I have tried the charger from my s3 which does says its charging when I connect my phone but only for about a minute so I also tried using the charger from my s2 and that just does exactly the same.
An easier way is to buy the official allshare dongle for your hdtv then you can stream anything from your phones screen direct to your tv and can have the phone on charge via pc or wall socket at the same time,
Hope this helps
i suggest you throw away your original charger (slow charge) and its usb cable (loose - actually caused the extsd to become damaged to the point i had to repartition) and buy yourself a cheap usb cable for data (£2) and a 3rd party charger (pref not a usb adapter one - £5) and all should be fine!
I still experienced a small battery drain while using the mhl adapter, however, i froze a few apps with titianuim (ones i know run all the time like utter and tasker, paragon ntfs, easy ums, directory bind etc), and put it on min brightness - works like a charm. I know its a effort freezing apps but does the trick with my phone... Since finding that out i actually keep paragon & easy ums frozen till i need them...
just a few thoughts for you....
First:
Major Credit to SDX's FTEN for being first with his very original idea and micro Usb version of this hardware mod. If it weren't for him, I would not have dared to do this.
See his original thread: Self Powered USB Host on the HP Touchpad! and at RootzWiki
SDX Version of this thread
Rootzwiki Version of this thread
DISCLAIMER: I'm not a dev, nor do I play one on t.v. Use the information and links at your own risk. Read and understand what you're doing FIRST is the best bet. I take no credit for the original idea, just ran a bit farther out on the branch before it broke.
Afterwards be sure to check out:
[Tips and Tricks] OTG (USB Host Support) - Requires kernel support
and
My 2 Port 2 Amp OTG Charger & Mod post further down.
This is a difficult modification that requires you to completely disassemble Touchpad (correct tools a plus), cut and dremel out excess material from the back cover (risk of permanent damage) and display frame. You also need to have some soldering equipment plus skill with very small circuit boards/traces (if you want more than a full size power port) and loads of patience (this took several hours over 4-6 separate days).
Still interested? Have a look:
Parts:
- USB-A Female Connector from a USB Extension cable (and it's spare wire)
(or optional microUSB breakout as FTEN used in his original version)
- Small, thin, SPDT switch (single pole double throw) from a Dollar Store toy, ie "DollarTree"
- VPack PRT-08290 (5v Regulator) and it's PDF Reference file
- micro USB (M) connector from a cable or OTG Adapter (if you can't get the Enable switch landed you'll need this cut up into a plug with the ID pin shorted)
( or maybe AppleCable's Powered OTG Cable )
Tools:
- Spudger Tool set (or similar for cracking open the TP)
- Variable Speed Dremel with "Rotary File" bit
- Decent Soldering Iron (ie: Weller WES51) with small conical tip, and small electrical solder (LeadFree compatible recommended)
- Hobby knife Set (ie X-Acto with various blades and handles)
- Hot Glue Gun and sticks
Basic Disassembly/Reassembly: iFixit's HP Touchpad Battery Removal Guide
(You should be confident with the above. Be prepared to break a few of the 7 clips; superglue helps).
The Finished Product:
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Part 0 - Parts, Planning, & Schematics:
My Original sketch of the wiring schematic for the mod
The 3.7v to 5vdc Step-Up Regulator board
My wife's Simon Toy supplied the OTG Enable Switch (she wasn't thrilled)
Here's another option for the switch from my local "DollarTree" store
Here's the Full Size USB-A Extension Cable before and after modifiying
Lesson Learned: Go ahead and strip the Potting Material off the USB-A (F) connector to expose the 4 solder points and remove the wires (or at least the 2 DATA lines). I think you will have better success if you "land" the Data wires and OTG Enable Switch wire to the TP's USB Controller Board first and then connect the leads to the USB-A Connector and Enable Switch since those solder points are more durable.
** Make sure that the cable wiring is "Copper Colored" not silver, etc. The copper wire will solder more easily without damage to the USB Controller Board later on **
Part 1 Pictures (MB Power Leads and Routing):
Part 1 pictures (Sim Slot Modification & Test Fitting):
When it's all mounted up (Later) the connector will stick out the back like this:
Part 1 Pictures (Regulator/Connector Placement and Wiring)
Soldering the Battery leads to the Regulator input (take time to get the length & routing correct)
* See Previous note about soldering Data and OTG Switch wire to USB Controller Board First *
Here the 5vdc to the USB connector is soldered to the Regulator Output & a DC Rtn from the regulator is soldered to the switch's "common".
Part 2 Pictures (Sim Slot/Display frame notching)
Part 3 Pictures (USB Controller Board info)
Part 3 Pictures (USB Controller Board info)
Note: You can skip this step if you just want a full size USB-A power port and don't care about it having working "data" communication and OTG Enable Switch (I screwed up the enable switch solder pad).
Please read the notes in the pictures for this section, they will help avoid my mistakes.
Part 4 Pictures (finished)
Updated: 12-3-12
Additional Reference Info
Here'a an OTG Cable reference schematic that I made to help people make their own OTG cables and OTG shorting plugs. It works as a good reference to figure out how a purchased cable is wired up (some are different).
And here's a picture of the micro-USB breakout board (4pins only) from Sparkfun.com that Ften used in his original mod mentioned at the top of the OP. If you prefer, you can squeeze this into the sim slot without dremeling the back cover to a "paper thinness" and hook up your data and pwr to it, but you will have to make or purchase a male microUSB to USB-A adapter (an OTG one would work since there isn't an ID pin hooked up). I avoided this option because I don't want someone hooking it up to a USB wall charger by accident and possibly killing the regulator
2 Port 2Amp USB OTG Charger & Mod
Here's an update...
My CrazyOnDigital 2 port charger doesn't have the data pins shorted (D+ and D-) like the stock HTC unit. This causes any "Android" phone to charge at the lower 500ma Max "Charging USB" rate vs "AC Charging" (explains my slow charging when travelling), but a bonus is that it allows me to pass data b/w the 2 ports like a simple hub.
- If the D+ and D- pins are shorted when an OTG USB cable is plugged in, the phone/device will go into "AC Charging" mode, but not allow OTG devices to work, but if the phone is still connected and the data pins opened back up, you retain "AC Charging" mode and have USB OTG functions.
(I'm thinking that a simple on/off switch installed across the data pins of my charger will give me a dual mode charger).
AC CHARGING / USB CHARGING (Data Pass Through) MOD 12-1-12
- I got tired of having a 2 port 2 Amp charger that only allowed 500ma "USB Charging" with Android & OTG. See pix:
Since breaking my power button and not knowing where to find a replacement part, I am very interested in what you are doing here.
I was considering finding a way to install an SDHC card in the same spot you've done your USB port. Do you imagine that there would be any additional complications?
I'd also like to add a power switch via the battery.
Sent from my SAMSUNG-SGH-T989 using xda premium
-SGA- said:
Since breaking my power button and not knowing where to find a replacement part, I am very interested in what you are doing here.
I was considering finding a way to install an SDHC card in the same spot you've done your USB port. Do you imagine that there would be any additional complications?
I'd also like to add a power switch via the battery.
Sent from my SAMSUNG-SGH-T989 using xda premium
Click to expand...
Click to collapse
In case you not aware there is an app called Button Saviour that can mimic all your hardware buttons including power.
Edit which I have just realised is of no help whatsoever if your Tablet is off . Best of luck.
-SGA- said:
Since breaking my power button and not knowing where to find a replacement part, I am very interested in what you are doing here.
I was considering finding a way to install an SDHC card in the same spot you've done your USB port. Do you imagine that there would be any additional complications?
I'd also like to add a power switch via the battery.
Click to expand...
Click to collapse
My suggestion for the power switch would be to get another TP off Ebay to rob for the switch (probably the only way I will get another USB board to finish my OTG mod 100%). I saw the guts of a 16gb (no screen assy) go for $41 the other day.
As for an SDHC card, don't know. You'd probably have to connect it the same way as the OTG connector (pwr & Data). You'd still need the switch or OTG plug to get the TP to check the bus, the 5v step up to pwr it, some sort of micro-Sd "socket (so there's room for the switch) and an app like "StickMount" to mount it for use. Ultimately, it'd still be OTG but without the option to connect anything else. I'd recommend the OTG port instead.
Edit: I updated Part 4 pictures with a fillet around the port and added a link to the OTG Tips & Tricks Thread (Evo3D)
i saw the orig post you referred to in your OP..
altho i like it very much and admire your work, i will never
be qualified to attempt it..
i just wonder why the cable still has to run outside from your new usb port to the micro usb port.
is it stupid to ask why it could not permanently connect from the inside and use a switch for charging / data transfer ?
again, i will never be able to do this so you could ignore this post..
also, from your evo 3d thread, i see that someone uses a 4 port 12000mah
battery charger for data... is this correct?..
i use a solar powered 4 port hub but would like to see a battery charger modded to charger / data transfer w/ a switch..
the solar hub of mine doesnt last so long
thanx foryour reply..
amkaos said:
i just wonder why the cable still has to run outside from your new usb port to the micro usb port.
is it stupid to ask why it could not permanently connect from the inside and use a switch for charging / data transfer?
Click to expand...
Click to collapse
Look closer at the USB Board post pictures. If the OTG switch wire is connected to the board internally, then no external setup is needed. I damaged the board just enough that I couldn't finish it until I can locate another board.
Others may not be willing to attempt the board soldering and choose only a full size power port (or microUSB) that needs the external cable that provides power back to the otg device plugged into the original port.
Sent from my "Up all night, Sleep all day" EVO3D!
mpgrimm2 said:
Look closer at the USB Board post pictures. If the OTG switch wire is connected to the board internally, then no external setup is needed. I damaged the board just enough that I couldn't finish it until I can locate another board.
Others may not be willing to attempt the board soldering and choose only a full size power port that needs the external cable that provides power back to the otg device plugged into the original port.
Sent from my "Up all night, Sleep all day" EVO3D!
Click to expand...
Click to collapse
thanx for the explanation.. i get it now..that makes so much sense
do you know what i was speaking of relating to the mod to a battery charger to switch between charge / otg ?
if possible to do , i could attempt that mod
amkaos said:
also, from your evo 3d thread, i see that someone uses a 4 port 12000mah
battery charger for data... is this correct?..
i use a solar powered 4 port hub but would like to see a battery charger modded to charger / data transfer w/ a switch..
the solar hub of mine doesnt last so long
Click to expand...
Click to collapse
I'm not sure what u mean by this. Post some links or quote the post and I will see if I can figure it out.
Sent from my "Up all night, sleep all day" HP CM9 Touchpad
shoot... sorry i thought i did link...
http://forum.xda-developers.com/showthread.php?t=1916638
to me , this is interesting because the OP shows a modded OTG cable to connect the mini port on his solar hub to the micro port of his evo3d..
this eliminates one cable:: from hub mini port to OTG usb..
he does say how it works but i dont know if the mod would be exactly the same for our HPTP..
i have that same self powered hub and it works fine.. just not much run time.. maybe 700mah.. iirc
secondly post #2 in that thread speaks of his 12000mah charger. it seems to me like he modded it to do OTG..
this would be good because of how much run time it would have..
could be great if he put on the charger a switch for charge / data transfer if it would need a switch to use like that..
anyway your current mod is soo ambitious but i saw you modded a wall charger ..
thanx again
OK I see what he did with the charger. It uses an adapter (host) cable to go from the main hub port to the PC (mini-USB to full size USB-A).
It looks like he spliced the micro-USB OTG cable (pin 4&5 shorted) to a mini-USB cable, and made a custom OTG Host cable. He mentions he disconnected/broke the +5v wire to prevent it charging the phone due to the small battery in it. I wouldn't do that myself, but I'd also ideally want a 3000-4000mah Solar Hub to modify for OTG & keeping the phone/tablet charged.
Have a look at my OTG cable schematics in reference post 9 above, particularly cable 1.
Sent from my "Up all night, sleep all day" HP CM9 Touchpad
mpgrimm2 said:
OK I see what he did with the charger. It uses an adapter (host) cable to go from the main hub port to the PC (mini-USB to full size USB-A).
It looks like he spliced the micro-USB OTG cable (pin 4&5 shorted) to a mini-USB cable, and made a custom OTG Host cable. He mentions he disconnected/broke the +5v wire to prevent it charging the phone due to the small battery in it. I wouldn't do that myself, but I'd also ideally want a 3000-4000mah Solar Hub to modify for OTG & keeping the phone/tablet charged.
Have a look at my OTG cable schematics in reference post 9 above, particularly cable 1.
Sent from my "Up all night, sleep all day" HP CM9 Touchpad
Click to expand...
Click to collapse
hi
so his phone supports data / charging at the same time?
but to mod an OTG cable for hptp and the mini usb port Hub, we just need to replace the usb end?
and leave pins 4 and 5 as they are?
How else would you make it instead..
I looked everywhere for a better self powered hub whether replaceable battery or not and would have liked to find something better.
thanx.. maybe I can try to make one
I thought I'd throw this out here to whoever is interested in a similar install.
It's been a long while trying to figure out how to get my nexus 10 working otg without draining the battery. So, what I did was eliminate the battery all together and run it with a regulated power supply soldered to the positive and negative pins inside where the battery clip would normally go. Everything ran smooth without any errors whatsoever, then came time to test it all out by plugging the otg cable. what do you know, it worked flawlessly.
I'm able to run a usb hub with 3 flash sticks and 1 ssd hd. Hub must be powered separate with the power plug. This is a perfect setup for my situation since the tablet is installed in my truck and I wasn't too happy with the idea of having a lithium battery inside on hot summer days.
I'm pretty sure this method could even work while keeping the battery installed inside connecting the leads to a double throw relay along with a separate plug that would separate the two power sources.
Testing also passed while plugging it to the pc foe file access and debugging mode.
Hope this helps some people. Don't be shy if you need to ask any questions on this project.
Later
A pc usb port puts out 5v 500ma wich barely keeps the Nexus10 battery level
The ac charger puts out 5v 2amps
I hope your power supply is putting out same amps..
Sent from my Nexus 10 using XDA Premium HD app
Asylum01 said:
I thought I'd throw this out here to whoever is interested in a similar install.
Hope this helps some people. Don't be shy if you need to ask any questions on this project.
Click to expand...
Click to collapse
Hello Asylum,
I'm indeed interested in your setup, since OTG+charging is not possible with traditional methods (even pogo cable doesn't work along with OTG).
If I clearly understood, you opened your nexus, removed the battery and directly soldered cables + and - ?
Is it a complex operation ? (in particular to open the nexus and close it without tearing it down).
Do you have a photo of your installation ?
Thank you for your help :cyclops:
LeDuke
I'm also interested in this setup and would love to see pics!
Not to sound like a d1ck or anything, but I have a alternative. Just make a otg cable with a male and female USB ends and just hook up the male end to power lines. Them you can just use a regular USB wallwart to profile power to your drive.
I used this method to run a 1tb external HDD.
http://www.dx.com/p/usb-3-0-female-...able-w-adapter-black-20cm-289081#.U4Sx-ii5IrM
Anyone use this or buy from this site? Seems cheap enough *lol* and free shipping to us Canucks! :laugh:
I think it would be the same with those listed on eBay, I bought OTG USB 3.0 and it works pretty good.
thanks for the info...
enroh said:
http://www.dx.com/p/usb-3-0-female-...able-w-adapter-black-20cm-289081#.U4Sx-ii5IrM
Anyone use this or buy from this site? Seems cheap enough *lol* and free shipping to us Canucks! :laugh:
Click to expand...
Click to collapse
i bought one of these from mobilepower on amazon, but it doesn't work. wanted it to power an external harddrive, but it was a no-go. my notepro recognizes that a usb connector was added, but doesn't mount the harddrive, even with the power pack attached.
however, i did get a usb2 otg cable and that works (pictured below). i don't know what the difference would be, perhaps i just got a dud with the usb3.
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-liquidquick
I've got one coming in in the next 21 days (HK shipping, lol) so I'll tell you what's what when it arrives over here.
In an effort to find a way to lighten my travel load just a little (normally travel with tablet and my macbook pro) for trips where I'm really not going to need the laptop I decided to try out using a 4-port USB 3.0 hub.
Just got it yesterday so I haven't put it through its paces just yet.
Here's a test setup I just tried using a USB keyboard, mouse, 500GB hard drive formatted exFAT, and a usb SD card reader. Test setup is powered by an Anker Astro2 9000mah battery and utilizes this USB OTG cable and this USB 3.0 hub.
At first the setup was a bit finicky. I had plugged everything in (the wire for the hard drive is the piggy back style where it has an additional connector for power) and the hard drive would not show up in file browsers. It wasnt until I unplugged all but the hard drive and ran the hub off of the tablet's power that the drive showed up. I then plugged back the power source and everything was fine after that as I inserted the keyboard, mouse and card reader. Further testing is needed but at least I know I can copy files from my DSLR cards to my HDD as a backup at my leisure back at the hotel on my next trip.
All of this is more proof of concept kind of stuff for me. When I travel I will be using a bluetooth keyboard and mouse that gets left in the hotel room along with the hard drive and hub. I'll carry around the tablet wherever I go but it's nice to know that in a pinch I can use it back at the hotel as more than just a tablet if I need to.
does that y-connecter power the tablet or the drive? my drive does not require power attached (its a USB3 WD Passport Ultra 500GB) but I need to power my tablet with the drive connected as i barely get over 3 hours of 1080p playback till I need to plug in.
if your cord doesn't I need to find one that does - if one exists...if not i may switch over to a Surface Pro 3 as it has USB3 fullaize and a sep. power connector...will buy a power inverter for my vehicle
muzzy996 said:
In an effort to find a way to lighten my travel load just a little (normally travel with tablet and my macbook pro) for trips where I'm really not going to need the laptop I decided to try out using a 4-port USB 3.0 hub.
Just got it yesterday so I haven't put it through its paces just yet.
Here's a test setup I just tried using a USB keyboard, mouse, 500GB hard drive formatted exFAT, and a usb SD card reader. Test setup is powered by an Anker Astro2 9000mah battery and utilizes this USB OTG cable and this USB 3.0 hub.
At first the setup was a bit finicky. I had plugged everything in (the wire for the hard drive is the piggy back style where it has an additional connector for power) and the hard drive would not show up in file browsers. It wasnt until I unplugged all but the hard drive and ran the hub off of the tablet's power that the drive showed up. I then plugged back the power source and everything was fine after that as I inserted the keyboard, mouse and card reader. Further testing is needed but at least I know I can copy files from my DSLR cards to my HDD as a backup at my leisure back at the hotel on my next trip.
All of this is more proof of concept kind of stuff for me. When I travel I will be using a bluetooth keyboard and mouse that gets left in the hotel room along with the hard drive and hub. I'll carry around the tablet wherever I go but it's nice to know that in a pinch I can use it back at the hotel as more than just a tablet if I need to.
Click to expand...
Click to collapse
enroh said:
does that y-connecter power the tablet or the drive? my drive does not require power attached (its a USB3 WD Passport Ultra 500GB) but I need to power my tablet with the drive connected as i barely get over 3 hours of 1080p playback till I need to plug in.
if your cord doesn't I need to find one that does - if one exists...if not i may switch over to a Surface Pro 3 as it has USB3 fullaize and a sep. power connector...will buy a power inverter for my vehicle
Click to expand...
Click to collapse
Doesn't power the tablet, it's meant to power the USB devices.
I'm no electrical engineer but I would imagine that once the tablet goes into USB HOST mode there are limitations as to where power is going to go and that the power is going to go to the external devices not the tablet. Still I've seen mention of cables existing that will power both but have yet to see any concrete evidence of them. Would have loved it if this one powered both ways but I simply have no need to work for hours on end with a hard drive connected to my tablet.
I would imagine that with power going to the hard drive with this cable though your video playback time would increase substantially, perhaps even double to 6 hours.
For me I just use mircoSD cards with my video content on them that I'll swap in/out of the tablet as needed.
I have yet to find evidence that anyone has successfully powered the tablet with one of the y-adapters while using another device. I prefer to use my external drive as it doesn't require power connection and is 500GB. Maybe I will have to go the pricier microSD card route and limit the amount of media I have on it.
Not ideal if you ask me. Not that the SP3 is perfect but at least power and USB3 are separate ports and at least 128GB though the one I am looking at is 256GB.
muzzy996 said:
Doesn't power the tablet, it's meant to power the USB devices.
I'm no electrical engineer but I would imagine that once the tablet goes into USB HOST mode there are limitations as to where power is going to go and that the power is going to go to the external devices not the tablet. Still I've seen mention of cables existing that will power both but have yet to see any concrete evidence of them. Would have loved it if this one powered both ways but I simply have no need to work for hours on end with a hard drive connected to my tablet.
I would imagine that with power going to the hard drive with this cable though your video playback time would increase substantially, perhaps even double to 6 hours.
For me I just use mircoSD cards with my video content on them that I'll swap in/out of the tablet as needed.
Click to expand...
Click to collapse
Yeah I wish there was a better solution. I have a Kingston MobileLite collecting dust over here. I wished that it worked well but it just plain doesn't. Large high res video file playback is hit and miss and the software that Kingston put out for Android is ****e. In theory this thing would be perfect for what you want, a separate device that you could power and use to share your hard drive wirelessly to the tablet to stream. In practice . . useless as far as I'm concerned. I dunno, perhaps all I need to do is re-encode my library of files to a format that will work with this device combo but I'm just not motivated to do that.
Sent from my SM-P900 using Tapatalk