make your own USB OTG Simple - Galaxy S II Accessories

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Some high-end Android phones and most of today’s Android tablets support USB OTG (On-The-Go). This enables users to connect standard USB input devices such as keyboards and mice, or even extend storage using a regular USB pen drive. However, only a few Android tablets are equipped with a USB host port (Type A Female connector), while no mobile phone is. Some mobile phone manufacturers ship USB host ports with their handsets while others have them as optional accessories, usually at a premium price.
In order to connect an Android phone to a standard USB device, you need to use a micro (or mini) USB to USB Type A Female convertor, but this should also be an OTG cable. A mini USB OTG cable is available in the market and can cost you around Rs.150 – Rs.300, but finding vendors who actually sell it is not easy. The ones that are available are not guaranteed to work. The case of the micro USB OTG cables is also similar.
USB connector types
In this workshop, we show you how you can build yourself an OTG cable (be it micro or mini) at almost no cost. Do note that the procedure mentioned here will involve hacking into your existing cable, and even a small blunder can potentially damage your cable or the device you use it with. Proceed with extreme caution as we take no responsibility for any damages to your device. Do this at your own risk. Furthermore, do take note of your Android specs and check carefully to see if it has OTG capabilities before trying out this workshop. Phones don’t need to be rooted as the stock ROM usually supports OTG in compatible handsets. Those who have installed third-party developer ROMs should check with the developers if the OTG feature is enabled in the kernel.
Slicing the connector sleeve
Since all phones usually ship with cables, we suggest you opt for a second one from the market to create the OTG cable. For those who are not able to find a similar cable, this workshop will also show you how you can use the same cable for regular and OTG modes. In the following procedure, we'll be using a micro USB cable that we’ll convert to be used with USB OTG.
Requirements:
A standard mini or micro USB cable
Some small, thin wires
A sharp knife
Soldering iron and solder wire
Wire cutter
Hot glue or any quick glue
Firstly, we need to slice open the micro USB connector end very carefully using a knife. The idea here is to cut the outer sleeve (length-wise) into two halves to reveal the connector inside. Be careful not to destroy the outer sleeve as we shall be glueing it back on after the work is done.
A miniature switch
After the sleeve is taken apart, some of you might find a whitish plastic mould covering the connector’s leads. This is for strengthening the cable to connector contacts, and its use depends from manufacturer to manufacturer. Those who have this mould will also have to cut through it to reveal the connector leads. On revealing the connector leads, you will find that it has five leads and not four. The usual four are power, data, data and ground, while the non-connected lead is sense. This lead needs to be grounded before connecting the cable for the phone to switch to OTG mode and sense a USB device connected to the interface.
The difference - circuit
Given above is the pin-out diagram for the micro and mini USB connector.
Pin 1: VCC
Pin 2: data
Pin 3: data
Pin 4 Not connected / unused
Pin 5: ground
In order to get the phone to go into OTG mode, we need to short Pins 4 and 5. You can either choose to short them permanently by soldering them together or soldering two wires to each of the pins and leading those outwards from the connector, which can then be soldered to a small switch. Using the switch, we can switch the cable between normal and OTG whenever needed. If you choose to short it permanently, you will have to cut off the connector at the other end (The Type A Male USB connector) and solder a Type B Female connector to accommodate a USB device. You can also choose to have a male to female USB convertor at that end. Here's what we did:
The connector and the sleeve
We chose to connect a small switch to the leads at Pin 4 and Pin 5 and glue the switch to the wire itself. This way, we could use the cable for both regular and OTG purposes. Next, we glued the connector sleeves back carefully using hot glue. Now the other end of the cable, which has a male USB connector, needed to be converted into a female. For this, we opted for the scrapped USB rear panel connector of a desktop PC. We soldered the wires of the USB connector to create a USB female-to-female convertor. Once done, we now have an OTG cable ready for use. Just to ensure we do not end up frying our phone, we used a multimeter to double-check any cable shortings during the soldering. Lastly, we connected the OTG cable to our Android (the Sony Ericsson Live with Walkman) and used a USB mouse with it. If your cable worked for you and your phone is compatible with OTG features, you can also connect a USB hub to the OTG cable and use a USB keyboard, mouse and pen drive together on the same Android device.
Micro USB Pin points
By following this workshop you can now conveniently use a pointing device to control your apps and games, use a keyboard to type e-mails and messages or use a pen drive to store or access media or large files. If you are lucky enough to find a micro USB connector and a Type A Female USB connector at an electronics store though, you can make your own OTG cable for under Rs.100.

I would have tried it but for to have a soldering device. I guess soldering device is a must for electronic stuffs.

Geek
Harsha Raj said:
I would have tried it but for to have a soldering device. I guess soldering device is a must for electronic stuffs.
Click to expand...
Click to collapse
A soldering device and a multimeter is a must when a geek is born

Thanks for that tutorial. I'm tempted to have a 32G pendrive in my pocket now

murpheus said:
Thanks for that tutorial. I'm tempted to have a 32G pendrive in my pocket now
Click to expand...
Click to collapse
It works like a Charm..... i wish it could support External HDD.... lol sorry for asking for more GOD

All you need Is
All u need is
Any Spare Data Cable
an old usb hub multi connector sounds perfect
cut the data cable wire and then cut the usb hub wire
join two ends according to diagram
use tape to join and u r done
for perfect job use soldering iron
for amazing job follow this Instructons

karan.champaneri said:
Some high-end Android phones and most of today’s Android tablets support USB OTG (On-The-Go). This enables users to connect standard USB input devices such as keyboards and mice, or even extend storage using a regular USB pen drive. However, only a few Android tablets are equipped with a USB host port (Type A Female connector), while no mobile phone is. Some mobile phone manufacturers ship USB host ports with their handsets while others have them as optional accessories, usually at a premium price.
In order to connect an Android phone to a standard USB device, you need to use a micro (or mini) USB to USB Type A Female convertor, but this should also be an OTG cable. A mini USB OTG cable is available in the market and can cost you around Rs.150 – Rs.300, but finding vendors who actually sell it is not easy. The ones that are available are not guaranteed to work. The case of the micro USB OTG cables is also similar.
USB connector types
In this workshop, we show you how you can build yourself an OTG cable (be it micro or mini) at almost no cost. Do note that the procedure mentioned here will involve hacking into your existing cable, and even a small blunder can potentially damage your cable or the device you use it with. Proceed with extreme caution as we take no responsibility for any damages to your device. Do this at your own risk. Furthermore, do take note of your Android specs and check carefully to see if it has OTG capabilities before trying out this workshop. Phones don’t need to be rooted as the stock ROM usually supports OTG in compatible handsets. Those who have installed third-party developer ROMs should check with the developers if the OTG feature is enabled in the kernel.
Slicing the connector sleeve
Since all phones usually ship with cables, we suggest you opt for a second one from the market to create the OTG cable. For those who are not able to find a similar cable, this workshop will also show you how you can use the same cable for regular and OTG modes. In the following procedure, we'll be using a micro USB cable that we’ll convert to be used with USB OTG.
Requirements:
A standard mini or micro USB cable
Some small, thin wires
A sharp knife
Soldering iron and solder wire
Wire cutter
Hot glue or any quick glue
Firstly, we need to slice open the micro USB connector end very carefully using a knife. The idea here is to cut the outer sleeve (length-wise) into two halves to reveal the connector inside. Be careful not to destroy the outer sleeve as we shall be glueing it back on after the work is done.
A miniature switch
After the sleeve is taken apart, some of you might find a whitish plastic mould covering the connector’s leads. This is for strengthening the cable to connector contacts, and its use depends from manufacturer to manufacturer. Those who have this mould will also have to cut through it to reveal the connector leads. On revealing the connector leads, you will find that it has five leads and not four. The usual four are power, data, data and ground, while the non-connected lead is sense. This lead needs to be grounded before connecting the cable for the phone to switch to OTG mode and sense a USB device connected to the interface.
The difference - circuit
Given above is the pin-out diagram for the micro and mini USB connector.
Pin 1: VCC
Pin 2: data
Pin 3: data
Pin 4 Not connected / unused
Pin 5: ground
In order to get the phone to go into OTG mode, we need to short Pins 4 and 5. You can either choose to short them permanently by soldering them together or soldering two wires to each of the pins and leading those outwards from the connector, which can then be soldered to a small switch. Using the switch, we can switch the cable between normal and OTG whenever needed. If you choose to short it permanently, you will have to cut off the connector at the other end (The Type A Male USB connector) and solder a Type B Female connector to accommodate a USB device. You can also choose to have a male to female USB convertor at that end. Here's what we did:
The connector and the sleeve
We chose to connect a small switch to the leads at Pin 4 and Pin 5 and glue the switch to the wire itself. This way, we could use the cable for both regular and OTG purposes. Next, we glued the connector sleeves back carefully using hot glue. Now the other end of the cable, which has a male USB connector, needed to be converted into a female. For this, we opted for the scrapped USB rear panel connector of a desktop PC. We soldered the wires of the USB connector to create a USB female-to-female convertor. Once done, we now have an OTG cable ready for use. Just to ensure we do not end up frying our phone, we used a multimeter to double-check any cable shortings during the soldering. Lastly, we connected the OTG cable to our Android (the Sony Ericsson Live with Walkman) and used a USB mouse with it. If your cable worked for you and your phone is compatible with OTG features, you can also connect a USB hub to the OTG cable and use a USB keyboard, mouse and pen drive together on the same Android device.
Micro USB Pin points
By following this workshop you can now conveniently use a pointing device to control your apps and games, use a keyboard to type e-mails and messages or use a pen drive to store or access media or large files. If you are lucky enough to find a micro USB connector and a Type A Female USB connector at an electronics store though, you can make your own OTG cable for under Rs.100.
Click to expand...
Click to collapse
hai mate,
may i ask something here??
i didn't see any white colour wire on your diagram and i also didn't see any ocean blue wire on your actual pic.. could you help me here??

Thank you.. very clear & easy tutorial...

karan.champaneri said:
It works like a Charm..... i wish it could support External HDD.... lol sorry for asking for more GOD
Click to expand...
Click to collapse
You can use OTG to run External HDD, all you need is to separate HDD's power and give it External 5Volts from any cigarette car charger, HDDs consume 1Amp at the most and 5.2 Volts are suitable for it
old HDDs that have Mini-USB with those 2 end USB male wires dont need moding just plug the power on a 5V supply, let the HDD start and plug the Data+Power to OTG cable, but becareful to unplug OTG first before you unplug the power, its not a safe way but it works with my HDDs ( tested on SGS2 :good:

Related

Adding USB to the Xoom dock

I just got done modding my dock for USB. I know a number of people have already done this, but I did it slightly differently.
First, since I don't care about reversing this mod, I removed the speaker jack from the pcb. This way, I could use the factory hole for my usb cable.
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Next, I de-soldered the existing USB pins from the pcb, and used a crimper to attach them to my new usb cable. The tabs on the pins (that hold them in place inside the white shell) are the perfect shape for crimping. So the pins become crimped splices. (You generally get a more durable connection with crimping than soldering, so I like this approach.)
And here's the finished product:
Slightly more detail can be found here: Adding USB to a Xoom dock
-Jim
BeagleBoy said:
I just got done modding my dock for USB. I know a number of people have already done this, but I did it slightly differently.
First, since I don't care about reversing this mod, I removed the speaker jack from the pcb. This way, I could use the factory hole for my usb cable.
Next, I de-soldered the existing USB pins from the pcb, and used a crimper to attach them to my new usb cable. The tabs on the pins (that hold them in place inside the white shell) are the perfect shape for crimping. So the pins become crimped splices. (You generally get a more durable connection with crimping than soldering, so I like this approach.)
And here's the finished product:
Slightly more detail can be found here: Adding USB to a Xoom dock
-Jim
Click to expand...
Click to collapse
This is great for productivity related activities. A nice addition. How simple is it for the non-mechanically inclined? Or, better yet, can I pay you to make me one? Cost of dock, mod and shipping?
I did something similiar, but instead put a USB connector on the base. It looks nicer than it really is. The hole I cut was a bit too big so I filled it with hot glue and then put black electrical tape to make it look nice. Also the USB connector is purposely not flush with the housing as I have a 4G dongle that I plug in and I wanted room for it to stand straight up.
Oh and like you I no longer have audio out. Not a big deal as you can still use the headphone jack and I use BT to connect my audio.
Probably the best way to do it would be to mount a Mirco-AB socket in the back of the dock. Then you'd have the best of both worlds: you could plug a standard cable into the dock, and connect it to your pc; or you could plug in a OTG cable, and use it in host-mode.
I might try that with my second dock (that I have at work).
-Jim
Pity Motorola didn't release one with it in the first place
When I started the project I thought about putting both a micro-usb and the full-sized USB host connector with a switch to toggle between the two. Honestly though I hardly ever use the micro-usb to connect to my computer. I either use WiFi or simply plug a microsd into my laptop to transfer large files. So I gave up on that idea.
I am thinking about putting a small USB hub inside so I can have two or three USB host ports. I am thinking of USB 4G dongle, hard drive and possibly mouse/keyboard. If I can get that to work I also thought about tearing apart the USB-Ethernet dongle I have and putting an ethernet port on it as well. Maybe I just need to put all of that in a nice black box that could sit under the dock since I am running out of space on the back.
I've been thinking about converting my Droid X home dock into a Xoom dock lately. Looking at the USB/HDMI spacing on it I don't see why it wouldn't work. The only downfall of course would be needing to fit this into something more stable than the DX dock and then the lack of power to it. I've read some horror stories with docks and connector pins though so that might not be to huge an issue.
Anybody gone down this road?
The xoom only charges via the barrel connector or the surface pins. So any dock that has a USB connection that lines up would be fine for USB, but you won't be able to charge a xoom on any dock not designed for it.
Sent from my Nexus One using Tapatalk
Just finished my micro USB add on.
Sent from my Xoom using xda premium
Getting the audio AND other USB ports
Re huckfin's idea of a usb hub in the xoom dock, does that mean you could connect one of the hubs o/p ports back to the xoom pcb and get the audio back, as well being able to use the other hub outputs for other functions at the same time?
aitken88 said:
Re huckfin's idea of a usb hub in the xoom dock, does that mean you could connect one of the hubs o/p ports back to the xoom pcb and get the audio back, as well being able to use the other hub outputs for other functions at the same time?
Click to expand...
Click to collapse
I do not think so. There is only one connection to the Xoom and I think it can only do one or the other. I am guessing the yellow wire tells the Xoom to configure the port for audio instead of data. The idea behind adding a USB HUB was so I could plug multiple items into my dock, such as mouse, keyboard, hard drive and 4G dongle. I get all of my audio over bluetooth so the USB port was well worth the sacrifice.
Hello,
From what I read, there are only 4 cables on a standard usb (5 for the mini usb), and on the picture I see 6 cables. Could you explain which cable is to connect to which cable and what are you doing with the cables that are not connected?
Thanks
Thanks HuckFinn it is a pity that would not work.
Maybe ICS will give us a proper USB port!
aitken88 said:
Thanks HuckFinn it is a pity that would not work.
Maybe ICS will give us a proper USB port!
Click to expand...
Click to collapse
It is not that the Xoom does not have a proper USB port. It has one port that can be used as a device port, host port or when using an unmodified dock, audio. Since it is one physical connection I do not think it is possible for it to do more than one of these functions at a time. When it is being used as a host port you can use a hub to connect multiple devices, but the Xoom port is still only being used as a host.
Regarding the connections, coming from the USB connection in the dock are six wires. The yellow wire is the odd wire that I am assuming tells the xoom to port audio out of the USB connection. I have not done any testing to confirm this. I know the brown wire triggers the host mode when tied to the black wire. The other wires, black, red, white and green are the standard USB connections, -, +, d+ and d- .
I bought this one on eBay yesterday. Hopefully it works to transfer data to the computer.
Let us now how it is. It looks nice
Sent from my Xoom using xda premium
I would be very careful using this dock. In the pictures it appears that it uses the very thin charging plug. I would be scared that any misalignment could damage either the dock or the pin inside the xoom.
HuckFinn said:
I would be very careful using this dock. In the pictures it appears that it uses the very thin charging plug. I would be scared that any misalignment could damage either the dock or the pin inside the xoom.
Click to expand...
Click to collapse
Doesn't the official charger/speaker dock from Motorola also use the thin charging plug? I've looked at some youtube reviews and they seem to mention that it's not easy to dock due to that plug.
slonn said:
Doesn't the official charger/speaker dock from Motorola also use the thin charging plug? I've looked at some youtube reviews and they seem to mention that it's not easy to dock due to that plug.
Click to expand...
Click to collapse
No, the standard and speaker docks use the gold contacts on the bottom of the Xoom to charge. The standard dock has the USB connector and the speaker dock has both usb and hdmi connectors, along with the two gold spring loaded pins which make contact with the Xoom.
Just finished my mod to the HD dock. Didn't have to splice any wires for this method. I had my spare Droid X dock lying around so I ripped the USB cable out of that for this mod. The DX USB cable mounts perfectly where the HD dock USB cable does, fits like a glove, and has a female end that's just about right to extend to the bass port on the HD dock.
- Removed DX dock USB cable
- Opened HD dock
- Removed bass port/screws and set aside in the dock box (no longer using this)
- Removed mounting bracket/screws for USB/HDMI/power
- Snipped off plastic w/pliers where existing USB cable was fed through (no cutting/splicing like I said - I did this to be able to remove the existing USB cable from the hole in the mounting bracket)
- Replaced HD's USB with the DX USB (fit like a glove)
- Reattached mounting bracket/screws for USB/HDMI/power
- Fed the new USB cable through where the bass port used to be
- Moved the original HD USB to the side (extension cable through the same bass port path would re-enable speaker capabilities)
- Double side taped the new USB to the end of the bass port hole (hot glue later)
- Re-assembled the dock
Pretty easy. Like I said, a little hot glue would have made the new USB port more stable, but I'll add this later. Also if I want to re-use the internal speaker I'd just need to get a micro USB extension cable and feed that through the bass port as well - just plug it to the female USB to enable the speaker.

[Q] Flash Drive with MicroUSB connection (not USB)

I can connect USB sticks to my phone using a USB On The Go (OTG) cable which is basically a microUSB to USB adaptor.
That's great but I am looking cleaner solution. Is there a flash drive (such as USB stick) that has a microUSB male connector and can plug straight into the microUSB socket of my phone. There are plenty of adaptors and microUSB card readers but no microUSB flash drives, it seems.
I have seached all over the internet to no avail. has anyone come across such a thing?
bump, i really want one of these
BUMP!!!
I imagine a tiny flash drive where you can remove the USB plugin/cover, and underneath, see that it is meant to connect to a microUSB port.
Would be awesome for Android (Nexus, Skyrocket, etc...)
I found this thread since I am about to get my first nexus device but have literally never thought about this before now. That may give you some indication of how small the market is since most phones come with expandable memory. However, when I consider how many random ass devices and connectors you can find strolling through an electronics store, I honestly can't understand why someone hasn't built this yet.

microUSB to RCA/composite audio

OK, I am about to make the switch from iPhone to SGS3 as soon as they become available in the US.
My main concern right now is getting the audio to play through my current truck stereo deck (JVC KD-DV6200). Right now, I am using the Apple AV adapter that goes from the dock connector to composite (Red/white/yellow) and USB. This way, the phone charges while playing my tunes.
What are my options for keeping this same functionality. I want to be able to go from the microUSB to the composite (red/white) ports of the deck and also be able to charge the phone at the same time.
I am wanting to stay away from using the headphone jack as this usually results in some sort of hissing or humming interference.
I appreciate any info you can give. I'm simply trying to compile info so I can have things together when I finally jump ship.
the_buzz_man
You can get HDMI, VGA and DVI MHL adapters but not composite, and the S3 uses a new type of MHL cable so for now i think you can only find HDMI.
Other option would be to build your own cable, for more information check following links:
http://forum.xda-developers.com/showthread.php?t=1395173&page=2
http://forum.xda-developers.com/showthread.php?t=820275
Is it because this is such a new device that it is hard to find such a cable?
I have been very excited about dumping my iDevice and going Google but I must admit that this worries me somewhat. To me, a cable like this should be a basic accessory and should be readily available. Maybe I just got spoiled to that Apple AV cable.
I'm not trying to start a rant or anything, nor am I trying to dog android or apple. I'm just hoping that I missed something and that it will show up.
I'm still excited and anxious about trimming that apple tree.
the_buzz_man
Not to point out the obvious... but a single cable will not accomplish that. The micro USB is a digital port, not an analog port like the RCA jack inputs are on your stereo. So in order to convert the audio from the usb on the phone, it will need to go through a converter box to convert the signal.
You're pretty much better off just doing the headphone jack even though you dont want to. You could upgrade your stereo to one that does bluetooth streaming for cheaper than it would cost to get a converter.
Something like this *might* work... but I cannot guarantee it
http://www.amazon.com/Audio-REC2PC-Stereo-RCA-Cable/dp/B003R7KSYG
You would just need a standard USB to Micro USB adapter and hope it works.
coreyzw said:
Not to point out the obvious... but a single cable will not accomplish that. The micro USB is a digital port, not an analog port like the RCA jack inputs are on your stereo. So in order to convert the audio from the usb on the phone, it will need to go through a converter box to convert the signal.
You're pretty much better off just doing the headphone jack even though you dont want to. You could upgrade your stereo to one that does bluetooth streaming for cheaper than it would cost to get a converter.
Something like this *might* work... but I cannot guarantee it
http://www.amazon.com/Audio-REC2PC-Stereo-RCA-Cable/dp/B003R7KSYG
You would just need a standard USB to Micro USB adapter and hope it works.
Click to expand...
Click to collapse
Uh, apparently, it will. Granted, I don't know if it works w/ the GS3 (who knows what they flipped given the whole MHL adapter fiasco) but my guess is this is all generic android. Looking at the links posted above, it is possible to make a cable that will put the phone into home/car dock mode using resistors where the audio is then output via usb. I guess the sound isn't amplified so it sounds crummy w/o an amplifier, but if it's going out to a car preamp, it should be fine. When you think about it, this is how the docks work, sans the actual dock. I'm going to try to make this cable later as it doesn't look too hard.
I'm kinda sick of having to plug in two cables (w/ the GS3, it's one on top and one on the bottom which would be very awkward) and was debating whether to pursue a bluetooth solution, but this would work nicely.
This may not be the most attractive solution, but you can simply charge the phone with a car lighter plug and output the music through the headphone jack to the RCA cables. That type of cable certainly exists.
vnamee said:
Uh, apparently, it will. Granted, I don't know if it works w/ the GS3 (who knows what they flipped given the whole MHL adapter fiasco) but my guess is this is all generic android. Looking at the links posted above, it is possible to make a cable that will put the phone into home/car dock mode using resistors where the audio is then output via usb. I guess the sound isn't amplified so it sounds crummy w/o an amplifier, but if it's going out to a car preamp, it should be fine. When you think about it, this is how the docks work, sans the actual dock. I'm going to try to make this cable later as it doesn't look too hard.
I'm kinda sick of having to plug in two cables (w/ the GS3, it's one on top and one on the bottom which would be very awkward) and was debating whether to pursue a bluetooth solution, but this would work nicely.
Click to expand...
Click to collapse
**** it... good luck
wouldn't the desktop dock work? Just mount that or put that somewhere in your truck, get a 3.5mm to rca cable, use cigarette lighter charger, then plug both the charger and 3.5mm into the back of the dock and then all you have to do is set your phone on that every time and you're good to go...
viskey said:
wouldn't the desktop dock work? Just mount that or put that somewhere in your truck, get a 3.5mm to rca cable, use cigarette lighter charger, then plug both the charger and 3.5mm into the back of the dock and then all you have to do is set your phone on that every time and you're good to go...
Click to expand...
Click to collapse
This is what I suggested above but with the dock is a much cleaner solution.
viskey said:
wouldn't the desktop dock work? Just mount that or put that somewhere in your truck, get a 3.5mm to rca cable, use cigarette lighter charger, then plug both the charger and 3.5mm into the back of the dock and then all you have to do is set your phone on that every time and you're good to go...
Click to expand...
Click to collapse
That is one strong possibility. The only problem I foresee is how the dock will work with the phone if it is in a case. I have always kept my phones in an Otterbox defender case, and you know how hard it is to find a dock that will hold this much less lock into a usb port too. I may have to look into getting a different case that can come off easy.
Then again, maybe I will have to check into making my own cable. Most of the cable will be tucked into the dash somewhere so the aesthetics are not that important.
Will have to start doing some searching on pinouts and designs soon.
the_buzz_man
the_buzz_man said:
That is one strong possibility. The only problem I foresee is how the dock will work with the phone if it is in a case. I have always kept my phones in an Otterbox defender case, and you know how hard it is to find a dock that will hold this much less lock into a usb port too. I may have to look into getting a different case that can come off easy.
Then again, maybe I will have to check into making my own cable. Most of the cable will be tucked into the dash somewhere so the aesthetics are not that important.
Will have to start doing some searching on pinouts and designs soon.
the_buzz_man
Click to expand...
Click to collapse
There's a diagram in the post above. Essentially, the 365k resister on the ID pin launches it into dock mode, one is ground, one is to charge, and the other are left and right out. It doesn't look at all complicated. I'm going to make one later to see if it will work with my vibrant. Once I get my S3, hopefully it will still work. Then there's just the matter of making it look non-ghetto. You'd want to avoid electrical tape because the adhesive will probably melt in the car.
From reading those posts, it doesn't seem like it would be difficult at all to make this cable/adapter. Now, with the change they made to the MHL to HDMI adapter, I wonder if it changes the pinouts and the needed resistors for the S3.
I will be patiently awaiting some input/feedback from S3 owners that attempt this.
the_buzz_man
the_buzz_man said:
That is one strong possibility. The only problem I foresee is how the dock will work with the phone if it is in a case. I have always kept my phones in an Otterbox defender case, and you know how hard it is to find a dock that will hold this much less lock into a usb port too. I may have to look into getting a different case that can come off easy.
Then again, maybe I will have to check into making my own cable. Most of the cable will be tucked into the dash somewhere so the aesthetics are not that important.
Will have to start doing some searching on pinouts and designs soon.
the_buzz_man
Click to expand...
Click to collapse
You could always get a microusb extension but then that dock would have to be hidden somewhere or something.
I'm trying to do something similar to this and was wondering if anyone had come across a similar issue. Please bear with me, and forgive my primitive artwork. Number 10 below poses my real question. Here's my setup, and some commentary.
I'm a n00b, so it won't let me insert an image directly, but you can see it as an attachment.
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1) The Samsung EPL-3FHU adapter for Galaxy S3. Has 11-pin MHL input from phone, 5-pin micro-USB input from charger, and HDMI output toward display.
2) Standard micro-USB to USB cable from #1 to #3 (charger).
3) Griffin dual USB car charger.
4) Standard HDMI cable.
5) ViewHD Universal HDMI to Composite / AV Video Converter with HDMI input, optional (unnecessary) mini-USB power input, and composite A/V output to car display inputs.
6) Standard composite A/V cable.
7) The composite A/V inputs in my armrest. All gear above (#1-6) will be in my armrest, including #1, the MHL adapter.
8) Location of my phone - it fits perfectly in the ashtray opening when the ashtray door is open. I'll run a cable under the center console and out through the ashtray opening so that I can plug it in to my phone. The cable I need for this is number 10.
9) The phone, a Samsung Galaxy S III with its 11-pin MHL/micro-USB port.
10) This is the piece I don't have, can't find, and don't think I can make or re-create. I need it to be 11-pin micro-USB female on one end to plug into #1 above, and 11-pin micro-USB male on the other to plug into the phone. I think I need it to support the 11-pin Samsung micro-USB MHL pinouts (shown in macro/detail above) in order to pass both the audio/video and USB charging over the same cable. I might have to try the 5-pin flavors of MHL adapter (plus 5-to-11-pin adapter) and standard micro-USB cable to see if it works.
Any thoughts?
I would just splice into the mhl 11 pin cable and extend it as needed.
I've got a galaxy s3 but no mhl cable yet. Waiting for the price to drop a little...
Sent from my GT-I9300 using xda app-developers app
futaris said:
I would just splice into the mhl 11 pin cable and extend it as needed.
I've got a galaxy s3 but no mhl cable yet. Waiting for the price to drop a little...
Click to expand...
Click to collapse
Hi futaris - thanks for the reply. The problem I have with that is two-fold. One, the actual 11-pin micro-USB section of the MHL adapter is very short, and doesn't leave a lot of room to actually snip wires, pull back insulation, and solder on an extension (to all 11 wires). Also, it's a one-shot deal with that option. If something goes wrong I'm out of $40 USD. That's why I was mainly avoiding using that method. If I use the 11-pin to 5-pin adapter tip, which functionality would I lose (charging, video, audio)? I don't need USB OTG in the car. That may be a better bet here.
dcs3 said:
Hi futaris - thanks for the reply. The problem I have with that is two-fold. One, the actual 11-pin micro-USB section of the MHL adapter is very short, and doesn't leave a lot of room to actually snip wires, pull back insulation, and solder on an extension (to all 11 wires). Also, it's a one-shot deal with that option. If something goes wrong I'm out of $40 USD. That's why I was mainly avoiding using that method. If I use the 11-pin to 5-pin adapter tip, which functionality would I lose (charging, video, audio)? I don't need USB OTG in the car. That may be a better bet here.
Click to expand...
Click to collapse
The 5 pin adapter doesn't cost you any HDMI functionality or charging. It only costs you USB OTG that I know of.
thacounty said:
The 5 pin adapter doesn't cost you any HDMI functionality or charging. It only costs you USB OTG that I know of.
Click to expand...
Click to collapse
Ok, so I tried the older 5-pin MHL adapter with the 11-pin to 5-pin adapter tip and it works. However, when I tried to use a standard micro-USB female to male extension cable (www .amazon.com/Micro-B-Female-Extension-Manhattan-307420/dp/B007TLEDTW), it wouldn't pass any video or audio. Are the pinouts from the 11-to-5-pin tip different than a standard micro-USB cable? Can anyone think of another way to allow me to place the MHL adapter further away (maybe 5ft) from the phone itself? Has anyone tried one of these along with the 11-to-5-pin adapter for the S3? www .amazon.com/gp/product/B006V7F380
dcs3 said:
Ok, so I tried the older 5-pin MHL adapter with the 11-pin to 5-pin adapter tip and it works. However, when I tried to use a standard micro-USB female to male extension cable (www .amazon.com/Micro-B-Female-Extension-Manhattan-307420/dp/B007TLEDTW), it wouldn't pass any video or audio. Are the pinouts from the 11-to-5-pin tip different than a standard micro-USB cable? Can anyone think of another way to allow me to place the MHL adapter further away (maybe 5ft) from the phone itself? Has anyone tried one of these along with the 11-to-5-pin adapter for the S3? www .amazon.com/gp/product/B006V7F380
Click to expand...
Click to collapse
I have heard that you can't extend USB very far, but I have no data to back that up. How about a longer HDMI cable instead?

USB 'B' to USB 'micro b'

I'm looking for a USB 'B' (the one that looks like a square) to micro to connect my s3 to a DAC. I know that there a micro to female USB, and USB A->B, but I'd rather not have to deal with all that for convince. Is there anywhere I can get the cable I'm looking for?
Or if anyone knows where I can get the 2 connectors I could make it myself, but I haven't found someone who sells decently priced USB connectors.
For the DIY soldering required end of things check out SparkFun https://www.sparkfun.com/products/9614 (the have other parts as well).
I got some from E-bay a while back as well. http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=140737641542&ssPageName=ADME:L:eek:C:US:3160
For all things cable related the answer is usually http://www.monoprice.com/. The definitive supplier of good quality reasonably priced cables.
I cant find any such cable, why not just use the converter cables?
all you need is a male micro to female usb type a and you can use your regular usb male a to usb male b cable
you can get it pretty cheap on amazon
you can try to make your own, if you already have these spare cables you will have to sacrifice them
here are the pin diagrams http://www.allpinouts.org/index.php/USB_-_Universal_Serial_Bus (the 11 pin micro usb model is used for hdmi out)
you might want to read through this thread as well as it asking the same thing you want (just a mini-b instead of b)
http://www.head-fi.org/t/628374/samsung-galaxy-s3-to-dac-usb-micro-b-male-to-mini-b-male
Hooking one end of a USB cable type to another end is uber easy.
Just splice the four wires together.
Tape it up if you don't solder.
Otherwise, the Headfi link posted above is a good start. Those guys are always looking up weird ways to hook up the phone to a DAC. Here's another good thread where I remember someone looking for something similar to what you are. It's buried deep in a zillion page thread though.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1620

Note 10 Dex on Atrix Lapdock ( didn't want to hijeack the other HP Elite X3 topic )

Here's to let everyone know that dex on the Note 10 works with the old Atrix lapdock very well
In case anyone has one lying around and wants to see it in action, you would want the following accessories:
1. USB-C to HDMI adapter ( I opted for 1 with HDMI, USB 3.0 & USB-C in for power )
2. micro HDMI to HDMI cable
3. Female micro HDMI to Female micro HDMI adapter
Optional:
1. Modified USB A to micro USB cable ( more on this later )
2. Female micro USB to Female micro USB adapter
3. USB Cable + Charger to charge your phone
If all you want is to bring up dex on your lapdock, all you need are the HDMI connectors. You will want to use a Bluetooth keyboard & mouse to navigate dex and will not be able to charge your phone.
Going 1 step further, you can use a multi-function USB-C adapter with HDMI, USB OTG & USB in for power.
Here, you would modify a usb cable to give you access to the lapdock keyboard & mousepad. The lapdock was designed to be an all-in-one setup with the Atrix phone, so the 10 hour battery could also charge the Atrix. <-- That's our problem. So you will need to snip the RED wire in the usb cable to prevent the lapdock from potentially frying your phone or other devices.
Theoretically, you can charge the phone using the 2 usb ports on the back of the lapdock, but it's a trickle effect. It'll take forever and you won't be happy. I did it in a pinch & running any applications under dex still consumed my phone's battery. Plugging it into a charger, though, kept my phone @ 100%.
A big caveat here is the mousepad is NOT multitouch, so I still used my bluetooth mouse for the scroll wheel.
Here's where this becomes a lot of fun... the lapdock screen is great for running emulators in a decent window. I plugged in my shield gamepad with a usb cable into the back of my lapdock and was able to play pretty much anything I wanted to. Still plugged into an outlet kept the phone @ 100% while emulating 100%+ speeds.
The larger screen is also very nice for streaming tv/movies.
There is an option in the Dex control panel to output audio through the HDMI cable, so you aren't relying on your phone for audio.
Anyway, if you have one of these gems lying around, it's a great way to extend the value of this phone.
ycavan said:
Here's to let everyone know that dex on the Note 10 works with the old Atrix lapdock very well
In case anyone has one lying around and wants to see it in action, you would want the following accessories:
1. USB-C to HDMI adapter ( I opted for 1 with HDMI, USB 3.0 & USB-C in for power )
2. micro HDMI to HDMI cable
3. Female micro HDMI to Female micro HDMI adapter
Optional:
1. Modified USB A to micro USB cable ( more on this later )
2. Female micro USB to Female micro USB adapter
3. USB Cable + Charger to charge your phone
If all you want is to bring up dex on your lapdock, all you need are the HDMI connectors. You will want to use a Bluetooth keyboard & mouse to navigate dex and will not be able to charge your phone.
Going 1 step further, you can use a multi-function USB-C adapter with HDMI, USB OTG & USB in for power.
Here, you would modify a usb cable to give you access to the lapdock keyboard & mousepad. The lapdock was designed to be an all-in-one setup with the Atrix phone, so the 10 hour battery could also charge the Atrix. <-- That's our problem. So you will need to snip the RED wire in the usb cable to prevent the lapdock from potentially frying your phone or other devices.
Theoretically, you can charge the phone using the 2 usb ports on the back of the lapdock, but it's a trickle effect. It'll take forever and you won't be happy. I did it in a pinch & running any applications under dex still consumed my phone's battery. Plugging it into a charger, though, kept my phone @ 100%.
A big caveat here is the mousepad is NOT multitouch, so I still used my bluetooth mouse for the scroll wheel.
Here's where this becomes a lot of fun... the lapdock screen is great for running emulators in a decent window. I plugged in my shield gamepad with a usb cable into the back of my lapdock and was able to play pretty much anything I wanted to. Still plugged into an outlet kept the phone @ 100% while emulating 100%+ speeds.
The larger screen is also very nice for streaming tv/movies.
There is an option in the Dex control panel to output audio through the HDMI cable, so you aren't relying on your phone for audio.
Anyway, if you have one of these gems lying around, it's a great way to extend the value of this phone.
Click to expand...
Click to collapse
Annoyingly I have a Atrix lapdock but I'm not confident about the rewiring so found a good discounted HP Elite X3 lapdock. Only if someone sold the full cable and adaptor package on eBay for the Atrix
haha, it sounds more complicated than it actually is
just remember that the RED cable in the micro usb cables is power, so that's the only one that needs cutting. What I did was:
1. cut the usb cable in half
2. strip a little bit of the non-RED cables and twisted them together.
3. use electrical tape to cover each of the re-attached cables.
4. pull the red leads back onto the black sheathe
5. use electrical tape to go over the junction between the 2 halves of the cable.
All of the other components are things that are easy to order online, Amazon.
ycavan said:
haha, it sounds more complicated than it actually is
just remember that the RED cable in the micro usb cables is power, so that's the only one that needs cutting. What I did was:
1. cut the usb cable in half
2. strip a little bit of the non-RED cables and twisted them together.
3. use electrical tape to cover each of the re-attached cables.
4. pull the red leads back onto the black sheathe
5. use electrical tape to go over the junction between the 2 halves of the cable.
All of the other components are things that are easy to order online, Amazon.
Click to expand...
Click to collapse
Okay I'll order cables and have a go!
Please confirm the 3rd item in your list is a micro hdmi female to micro hdmi female as elsewhere I have seen micro female to standard female. Thanks
jah said:
Okay I'll order cables and have a go!
Please confirm the 3rd item in your list is a micro hdmi female to micro hdmi female as elsewhere I have seen micro female to standard female. Thanks
Click to expand...
Click to collapse
Yes, I use a micro hdmi female to female adapter for my micro hdmi male to normal hdmi male cable.
Suggestion
My take on these DeX apps is straightforward: they’re not great. If you just use them for simple tasks like texting, copying and pasting small bits of text, or dragging and dropping a file or two, it’s fine. Pushing any harder than that is likely to be a recipe for sorrow, however, as things tend to get laggy pretty quickly. I think that’s more the fault of the desktop software than the phone’s hardware, but regardless, it’s slightly disappointing.
I don’t think that’s a reason to avoid buying the Note 10, which is still an excellent phone. But the experience did get me thinking: why did I and so many others have the objectively irrational hope that DeX would unlock new ways of interacting with your phone?
I think it’s because the idea of making a sole computer sits right next to flying cars in the “this is what the future will be” section of our collective unconsciousness.
alexhalessays said:
My take on these DeX apps is straightforward: they’re not great. If you just use them for simple tasks like texting, copying and pasting small bits of text, or dragging and dropping a file or two, it’s fine. Pushing any harder than that is likely to be a recipe for sorrow, however, as things tend to get laggy pretty quickly. I think that’s more the fault of the desktop software than the phone’s hardware, but regardless, it’s slightly disappointing.
I don’t think that’s a reason to avoid buying the Note 10, which is still an excellent phone. But the experience did get me thinking: why did I and so many others have the objectively irrational hope that DeX would unlock new ways of interacting with your phone?
I think it’s because the idea of making a sole computer sits right next to flying cars in the “this is what the future will be” section of our collective unconsciousness.
Click to expand...
Click to collapse
Also if you can run DeX well on a lapdock, you may not need a Samsung Tab S6!.
alexhalessays said:
My take on these DeX apps is straightforward: they’re not great. If you just use them for simple tasks like texting, copying and pasting small bits of text, or dragging and dropping a file or two, it’s fine. Pushing any harder than that is likely to be a recipe for sorrow, however, as things tend to get laggy pretty quickly. I think that’s more the fault of the desktop software than the phone’s hardware, but regardless, it’s slightly disappointing.
I don’t think that’s a reason to avoid buying the Note 10, which is still an excellent phone. But the experience did get me thinking: why did I and so many others have the objectively irrational hope that DeX would unlock new ways of interacting with your phone?
I think it’s because the idea of making a sole computer sits right next to flying cars in the “this is what the future will be” section of our collective unconsciousness.
Click to expand...
Click to collapse
I use DeX with my lapdock instead of my "real" laptop a lot of the time. My emails are on my phone, contacts are on my phone, pretty much all of the gaming apps I use are on my phone. The only time I ever really need my laptop is to play high end games that aren't ported to Android. Now, if only LoD would come out for the note10... :/
Does the Note 10 support the old 1366x768 resolution on the Atrix Lapdock? I remember getting it going on my Note 8 and it's not a supported resolution leading to really unusable low-res blocky everything on the screen.
bchliu said:
Does the Note 10 support the old 1366x768 resolution on the Atrix Lapdock? I remember getting it going on my Note 8 and it's not a supported resolution leading to really unusable low-res blocky everything on the screen.
Click to expand...
Click to collapse
Yup.
Okay, managed to get my old Motorola Atrix working with my Note 10+. Took a different route to the one described above as the female to female couplers are not easy to source. So I used the Rasberry PI cables for the Atrix and my Samsung Note 8 Dex hub, which was free with the Note 8. But I have to use a BT mouse. Otherwise a good solution. But I would recommend the HP Elite X3 lapdock instead if there is not much a price difference on eBay.
ycavan said:
Here's to let everyone know that dex on the Note 10 works with the old Atrix lapdock very well
In case anyone has one lying around and wants to see it in action, you would want the following accessories:
1. USB-C to HDMI adapter ( I opted for 1 with HDMI, USB 3.0 & USB-C in for power )
2. micro HDMI to HDMI cable
3. Female micro HDMI to Female micro HDMI adapter
Optional:
1. Modified USB A to micro USB cable ( more on this later )
2. Female micro USB to Female micro USB adapter
3. USB Cable + Charger to charge your phone
If all you want is to bring up dex on your lapdock, all you need are the HDMI connectors. You will want to use a Bluetooth keyboard & mouse to navigate dex and will not be able to charge your phone.
Going 1 step further, you can use a multi-function USB-C adapter with HDMI, USB OTG & USB in for power.
Here, you would modify a usb cable to give you access to the lapdock keyboard & mousepad. The lapdock was designed to be an all-in-one setup with the Atrix phone, so the 10 hour battery could also charge the Atrix. <-- That's our problem. So you will need to snip the RED wire in the usb cable to prevent the lapdock from potentially frying your phone or other devices.
Theoretically, you can charge the phone using the 2 usb ports on the back of the lapdock, but it's a trickle effect. It'll take forever and you won't be happy. I did it in a pinch & running any applications under dex still consumed my phone's battery. Plugging it into a charger, though, kept my phone @ 100%.
A big caveat here is the mousepad is NOT multitouch, so I still used my bluetooth mouse for the scroll wheel.
Here's where this becomes a lot of fun... the lapdock screen is great for running emulators in a decent window. I plugged in my shield gamepad with a usb cable into the back of my lapdock and was able to play pretty much anything I wanted to. Still plugged into an outlet kept the phone @ 100% while emulating 100%+ speeds.
The larger screen is also very nice for streaming tv/movies.
There is an option in the Dex control panel to output audio through the HDMI cable, so you aren't relying on your phone for audio.
Anyway, if you have one of these gems lying around, it's a great way to extend the value of this phone.
[/QUOT
ycavan said:
Here's to let everyone know that dex on the Note 10 works with the old Atrix lapdock very well
In case anyone has one lying around and wants to see it in action, you would want the following accessories:
1. USB-C to HDMI adapter ( I opted for 1 with HDMI, USB 3.0 & USB-C in for power )
2. micro HDMI to HDMI cable
3. Female micro HDMI to Female micro HDMI adapter
Optional:
1. Modified USB A to micro USB cable ( more on this later )
2. Female micro USB to Female micro USB adapter
3. USB Cable + Charger to charge your phone
If all you want is to bring up dex on your lapdock, all you need are the HDMI connectors. You will want to use a Bluetooth keyboard & mouse to navigate dex and will not be able to charge your phone.
Going 1 step further, you can use a multi-function USB-C adapter with HDMI, USB OTG & USB in for power.
Here, you would modify a usb cable to give you access to the lapdock keyboard & mousepad. The lapdock was designed to be an all-in-one setup with the Atrix phone, so the 10 hour battery could also charge the Atrix. <-- That's our problem. So you will need to snip the RED wire in the usb cable to prevent the lapdock from potentially frying your phone or other devices.
Theoretically, you can charge the phone using the 2 usb ports on the back of the lapdock, but it's a trickle effect. It'll take forever and you won't be happy. I did it in a pinch & running any applications under dex still consumed my phone's battery. Plugging it into a charger, though, kept my phone @ 100%.
A big caveat here is the mousepad is NOT multitouch, so I still used my bluetooth mouse for the scroll wheel.
Here's where this becomes a lot of fun... the lapdock screen is great for running emulators in a decent window. I plugged in my shield gamepad with a usb cable into the back of my lapdock and was able to play pretty much anything I wanted to. Still plugged into an outlet kept the phone @ 100% while emulating 100%+ speeds.
The larger screen is also very nice for streaming tv/movies.
There is an option in the Dex control panel to output audio through the HDMI cable, so you aren't relying on your phone for audio.
Anyway, if you have one of these gems lying around, it's a great way to extend the value of this phone.
Click to expand...
Click to collapse
Hi, I'm trying to do the same. I've got a Note 10+ hooked up to my old Atrix lapdock. Note goes to a multiport adapter. From the adapter's USB-A output, I ran a cable to the lapdock's micro-USB. From the adapter's HDMI out, I ran a cable to the lapdock's mini-HDMI. With that, I can use the lapdock's screen but no keyboard or trackpad.
I ran a cable from the adapter's USB-C to one of the lapdock's rear USB ports, after snipping the red wire, but still no kb/m. The phone does charge like this though.
What have I done wrong? TIA.
Click to expand...
Click to collapse
The USB cable going to the micro-USB port on the lapdock needs to have the red cable snipped. What I did was to snip the red cable and pull both snipped ends back, then use a bit of electrical tape to cover that part of the wire so the snipped ends don't accidentally touch anything.
The USB cable(s) going to the rear of the lapdock are fine unmodified.
Dude/Dudette thank you so much!!! It's only because I came across your thread here that I decided to try and resurrect my trusty old lapdock, and now it works perfectly!
Thanks for replying so quickly. I modified the wrong cable - snipped the red wire on the USB cable running to the rear USB-A port. Doh!
ycavan said:
The USB cable going to the micro-USB port on the lapdock needs to have the red cable snipped. What I did was to snip the red cable and pull both snipped ends back, then use a bit of electrical tape to cover that part of the wire so the snipped ends don't accidentally touch anything.
The USB cable(s) going to the rear of the lapdock are fine unmodified.
Click to expand...
Click to collapse

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