How to make a USB OTG cable for connecting a keyboard and/or mouse to the Nexus Q - Nexus Q General

Hi folks,
I hope this helps someone out there. I didn't have a USB A female to USB micro A male On-The-Go (OTG) cable, they are rather rare. So I made my own. I have it plugged in right now and both my keyboard and mouse (Logitech K350) communicate to the bluetooth dongle, which is plugged into this cable, and into the Q and working fine.
This is how to make one:
Cut the female USB A female end off a USB extension cord
Cut the male USB micro A end off a USB micro extension cord (the micro A looks squarish, the micro B looks trapezoidal. Both will fit in the Q's receptacle. This should be possible to do with a micro B end too, but I didn't try it.
Solder the wires together, matching color to color. Tape up the wires so they don't touch.
Now you'll notice the "big" USB has four pins and the micro USB has five pins. And you soldered four wires. So what about that fifth pin? Open up the micro A connector. Most of them are fused shut but you can usually slit it on either side with a knife and open it like a clam shell. Find the fifth pin (it'll be the only one not connected to anything). Short that pin to the ground pin using a bit of wire or solder. You can figure out which one is the ground pin either by looking at the wire color (should be black) or consulting a micro USB pinout diagram.
Glue the clamshell back together again.
Plug in your keyboard and/or mouse (dongle or otherwise) and it should work! Does for me! Not only the basic keyboard/mouse functions but also many of the special keys, like the special "play" / "pause" / etc buttons at the top. Esc is back.

davidnhutch said:
Hi folks,
I hope this helps someone out there. I didn't have a USB A female to USB micro A male On-The-Go (OTG) cable, they are rather rare. So I made my own. I have it plugged in right now and both my keyboard and mouse (Logitech K350) communicate to the bluetooth dongle, which is plugged into this cable, and into the Q and working fine.
This is how to make one:
Cut the female USB A female end off a USB extension cord
Cut the male USB micro A end off a USB micro extension cord (the micro A looks squarish, the micro B looks trapezoidal. Both will fit in the Q's receptacle. This should be possible to do with a micro B end too, but I didn't try it.
Solder the wires together, matching color to color. Tape up the wires so they don't touch.
Now you'll notice the "big" USB has four pins and the micro USB has five pins. And you soldered four wires. So what about that fifth pin? Open up the micro A connector. Most of them are fused shut but you can usually slit it on either side with a knife and open it like a clam shell. Find the fifth pin (it'll be the only one not connected to anything). Short that pin to the ground pin using a bit of wire or solder. You can figure out which one is the ground pin either by looking at the wire color (should be black) or consulting a micro USB pinout diagram.
Glue the clamshell back together again.
Plug in your keyboard and/or mouse (dongle or otherwise) and it should work! Does for me! Not only the basic keyboard/mouse functions but also many of the special keys, like the special "play" / "pause" / etc buttons at the top. Esc is back.
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Looking for this? $2.50 per includes shipping on amazon http://www.amazon.com/gp/product/B005N55WHI/ref=oh_details_o02_s00_i00

Well then...

Related

Convert Netbook Keyboard to USB Keyboard

I've got a netbook that decided to pack its bags and tell me what for... Does anyone even know if it's possible to modify the connection (it's one of those laptop ribbon cables) to a USB connection that I could plug into my gTab?
I'm not squimish, and I can probably figure this out on my own, I'm just wondering if anyone has experience or done this before.
FYI, it's an Gateway LT 1004u
Thanks
converting the matrix would be to hard in a way.
unless the keyboard is native usb already ,
So sorry to reply to such an old post, but I may have come up with a solution.
I have yet to try this, as I don't have the parts necessary, but i am planning on giving it a go some time.
You will need:
The circuit from a USB keyboard (make sure you have the silicone cap that holds the ribbon cable in place)
Old laptop / netbook keyboard
(If required) an adapter to connect the ribbon cable (the pins on the keyboard will usually be the same amount as there is on the circuit, the ribbon cable is just really small)
1. (If required) attach the ribbon cable adapter to the ribbon cable of the keyboard.
2. Line up the pins of the ribbon cable with the keyboard circuit.
3. Place the silicone cap over the ribbon cable and pop it into place.
4. Plug in the keyboard to a USB slot on your computer and test if all the buttons work.
5. If some of the keys are wrong, use a program to rebind them (I don't know of any such program but I'm sure one exists)

40 pin cable!!

First off I'd to say hello from Alaska,
Ok this may sound strange but does anybody out there know where i might find or have one made, I'm looking for a cable with 2 40 pin connectors on both ends, 1 male and the other female. This is for my TF201 and dock, I would use it so I don't have to take off the case to the Prime just plug in to the prime and to the dock..
Thank you all Stan
Cables to Go should be able to do this for you. I've had them make custom cables for me before. It likely won't be cheap, but they should be able to do it.
www.cablestogo.com
Just in case anyone was curious, I thought I would try to get lucky and see if a female-female USB adapter with a standard ASUS 40-pin cable on either end would work. However, it was only a novel attempt and the tablet does not recognize the dock as I had hoped.
I am sure Cables-to-Go could get something to work, but I agree that it will be quite expensive. It would be nice if there was a jumper cable accessory to accomplish this same concept since I am in the same position as the OP and typically carry the tablet in its own case and only use the dock when I have alot of typing to do.
On a side note, I did confirm that my Logitech Anywhere Mouse with the Unifying Receiver does work 100% with my tablet and Dock!....I just may be able to leave the laptop at the office yet!
Does anyone have a mapping of the pins and wires? I would like to try and "splice" two cables together to try and make a jumper cable but would need to make sure that I make the right connections. Any assistance would be greatly appreciated.
I don't think that's going to work for several reasons.
First and foremost, if use two TP USB cables as the souce of the parts, you'll end up with a "jumper" cable with male connectors at both ends. You need male to female, remember?
Secondarily (and almost as important) is the number of contacts on the USB end of the cable. USB has four conductors plus shield and nine conductors plus shield in USB 3. Taking a cursory glance at USB plug on my TP cable, that's all there is. I don't see any additional conductors.
Following this, it's EXCEEDINGLY unlikely that the cable has 40 wires (one for each pin on the Prime end) running the full length. If it did, where would they connect to on the USB plug? Kinda silly to include extra copper to go nowhere.
Instead, if you were to pry open the 40 pin male plug, you'll see that most the pins aren't connected to anything. They're not needed for the USB cable.
Sorry to say, this just isn't going to work.
If you do choose to clip one of your cables just to have a look-see, cut the cable somewhere in the middle. If you cut right up next to the USB plug, you won't have ample wire there to repair what you're about to break.
I am aware that you will need a female adapter to make a true "jumper" cable. However, there may be a way of jerry-rigging a connection to the dock if a female connector can't be found (I have yet to find a part online).
My question is more in regards to whether or not anyone had a schematic of which of the pins are connected to which of the respective USB pins so that I could determine the best way of making a connection....short of having a cable for the ASUS TF201 like this: iPhone Extension Cable

[Q] micro usb charging ports on tablet z

I was wondering if experts on this forum can help clarify these questions.
The tablet Z has a rectangular shaped micro usb receptacle which is the microusb A/B type as I understand it. Although the normal popular micro usb B type connector which is supplied with the tablet Will fit in there, it is kind of loose, being able to move a little bit. Whereas the A type connector which is usually found on the OTG cables is a perfect fit and does not move around..
So, why is it that even Sony does not supply a cable which perfectly fit the receptacle?
If I use an otg cable to charge somehow (by making another cable from otg cable for eg or using otg with a normal usb male to male cable), since 5 pins are used in the otg connector will it in any way damage the tablet? (physically or otherwise..)

Dock connector is longer: why

Hi,
Does anyone has any idea why the micro-USB connectors which are used to connect a HDMI or VGA cable to the micro-USB port of the Samsung Galaxies are longer than let's say a data micro USB connector?
I've tried a micro-USB extension cable, and they don't work with these video-output connectors because they're too long. When I looked inside the connector I noticed that all the connection points are way down the connector, and that the upper part is just extra. So I've tried filing off the upper part. Now it charges the phone, but still no video output.
Thanks!
Never mind, just found an answer to my question
Apparently the dock / video out connectors are 11 pin micro USB connectors. The data and charging cable connectors are 5 pin.
Now to find an extension cable for that. I wonder if this excists.
It would be much easier to find HDMI/VGA extension cable rather then the 11 ping micro usb.
golalmo said:
It would be much easier to find HDMI/VGA extension cable rather then the 11 ping micro usb.
Click to expand...
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Indeed, but the problem is that I want to extend the dock connector so I can put my Note 3 next to my dock to put it in landscape.

Dual screen magnetic adapter not work with OTG?

I tried to hook up a game controller via the OTG adapter and it appears to not send any power out from it. Even with a USB thumb drive and other USB C adapters, nothing seems to work. Has anyone else noticed this? You can transfer data via the cable just fine, but I find it strange it doesn't send any power through the plug.
Have you tried connecting it the other way round?
tomixnscale89 said:
I tried to hook up a game controller via the OTG adapter and it appears to not send any power out from it. Even with a USB thumb drive and other USB C adapters, nothing seems to work. Has anyone else noticed this? You can transfer data via the cable just fine, but I find it strange it doesn't send any power through the plug.
Click to expand...
Click to collapse
I noticed the same thing. I believe it's because once it comes out the other side with the 5-pin adapter, it is then reduced to the old micro-usb specification, which uses 5 wires. True USB-C connection has like 20 or 24 pins. I was able to get a couple very basic OTG of things to work, like a mouse and a thumb drive. BUT HERE IS THE CATCH - The mag connector has 5 pins, reduced from 20-some on the C connection.. so true USB-C connection is no longer possible once you get on the other side of the connector. So the trick is to NOT use a USB-C OTG when it's in the case with magnetic adapter. You must use a Micro USB OTG with a Micro-to-C adapter attached to that. Even so, not everything worked just by sticking on the Micro-to-C adapter.. Mouse and a thumb drive worked, but my ethernet adapter and VGA/HML/HDMI adapters did not. Out of the case, I can use my USB-C to HDMI cable to display on my TV. But same cord does not work with the magnetic adapter with the case. It is simply not possible because the reduction of contact pins from phone to case to magnet.. One more thing to consider, if you're trying to do anything other than charging, make sure the magnet is on the right way.. there's a little logo it should be in the front.
If I can come across a spare or broken Dual Screen case, I'd be curious to take it apart and see if it would be possible to rig it up with a better plug for the case.. find which wires go to the workings of the DS and leave them intact, but then try to replace the magnetic pins with a female C plug that has all the contacts intact still..
Seymour_Asses said:
I noticed the same thing. I believe it's because once it comes out the other side with the 5-pin adapter, it is then reduced to the old micro-usb specification, which uses 5 wires. True USB-C connection has like 20 or 24 pins. I was able to get a couple very basic OTG of things to work, like a mouse and a thumb drive. BUT HERE IS THE CATCH - The mag connector has 5 pins, reduced from 20-some on the C connection.. so true USB-C connection is no longer possible once you get on the other side of the connector. So the trick is to NOT use a USB-C OTG when it's in the case with magnetic adapter. You must use a Micro USB OTG with a Micro-to-C adapter attached to that. Even so, not everything worked just by sticking on the Micro-to-C adapter.. Mouse and a thumb drive worked, but my ethernet adapter and VGA/HML/HDMI adapters did not. Out of the case, I can use my USB-C to HDMI cable to display on my TV. But same cord does not work with the magnetic adapter with the case. It is simply not possible because the reduction of contact pins from phone to case to magnet.. One more thing to consider, if you're trying to do anything other than charging, make sure the magnet is on the right way.. there's a little logo it should be in the front.
If I can come across a spare or broken Dual Screen case, I'd be curious to take it apart and see if it would be possible to rig it up with a better plug for the case.. find which wires go to the workings of the DS and leave them intact, but then try to replace the magnetic pins with a female C plug that has all the contacts intact still..
Click to expand...
Click to collapse
Thank you @Seymour_Asses ! I saw here https://twitter.com/konic0s/status/1202966945693220865 that LG G8X supports USB-C to HDMI adapters but I didn't know if it also worked with the Dual Screen case but now I know it doesn't, thanks for the information, very helpful ! :good:
BTW I think that when you connect the Dual Screen case to the G8X it uses the dedicated USB-C high speed pins of the G8X for video-out so these pins are not available anymore for other HDMI out, I'm not sure about it and don't have any proofs but it seems you are right about not enough pins on the mag connector.
If i remember correctly, the manual states that most USB-C functions wont work though the dual screen case. I think there was some speculation that its due to most of that bandwidth being used for the second screen.
Quite simple: the Mag USB-C adapter is for charging only. It drives me mad as i have a professional USB-C headphone that I use for conferencing.
But I understand the reason: when in dual screen, the USB-C data connection is in use dor the second screen, enabling the USB-C connection beyond that requires a hub to be built in the case "before" the DS connection (so it wont work building it in the dongle itself).
I wish LG went with a Pogo connector on the bottom or on the side to activate the DS case. This would have made the chin slimmer and freed up the USB-C port.
Anyway, it is what it is now, and i will not trade my LG G8x DS for anything at the moment... Until maybe that Surface Duo phone for which I might need to sell a vital organ ?

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