Ok I am going to be installing this tablet into my truck to replace the factory radio. My current dilemma is that I cant figure out a way to get otg host and charging working at the same time. I have tried some of the cables on ebay that are supposed to make this possible. Either one works or the other. So I was thinking maybe I could hardwire the tablet directly to my vehicle. Either wiring directly to the circuitry inside the tablet or possibly wiring in another microusb or usb port onto the tablet. I know some tablets come with an ac port already on the tablet along with the microusb port. I usually see this setup on larger tablets or some of the off market ones. I was wondering if anyone could help me thru this if it is even possible. I have also seem someone was able to make a custom kernel to enable a tablet to be charged and otg host at the same time on a different tablet. I can provide pictures of the inside on the tablet if this would help out any.
Related
One of the very few downsides to the Asus transformer is the lack of a full-sized USB port on the tablet itself. You can always purchase a dock and Asus has said that they will be selling a miniUSB >USB dongle. However, neither of these solutions is really the same as having a slot within the tablet.
I figured the folks at XDA wouldn't stand for this!
Here is my challenge. Add a full USB slot to the tablet and post instructions.
Here is how I could see this going down:
1) Someone with more hardware know-how, open up your transformer and find a physical spot in which one could place a full female USB connector with a small mounting bracket.
I haven't seen a hardware teardown yet probably due to lack of stock.
2) Figure out wiring from a full USB slot to controller. Perhaps directly splicing with the microUSB cables?
3) Either do it yourself or write up your findings and let the community try.
I think with a small dremmel tool and some pieces from radioshack we could make a pretty good mod.
What do you guys think?
I'd be interested to see someone do this, but I think 99.99% of the population would be too afraid to take a dremel to their TF considering it is about 6 mm in width at the edges. It would have to be a pretty tiny dremel. That's not considering the risk of opening it up. Then, finding the right location to solder the USB port to on the circuit board.
I think I'll wait for the dongle
The easiest would be a dock connector to USB dongle. That way, it doesn't require opening anything, just scoping the dock and how that works.
Just wait for the official solution that's my advice
For what it's worth, I bought a usb 3.0 F-F adaptor and attached it to the power cable. I then plugged in a usb memory stick. There was some activity and drivers were loaded on the Transformer, but the memory stick was not recognized.
Anyone else have any luck with this?
So, I purchases a USB OTG cable in an attempt to try and expand the functionality of Webtop while using Nebtop. I've been unable to get any response from the phone when I plug in this cable. I've tried my wireless Logitech mouse and keyboard that worked off the bat with my TF101 using the Unifying remote they came with as well as an external TB drive.
Has anyone else had any experience with this? It seems logical that the phone supports host mode since the actual dock has 3 full sized USB ports.
All the information pertaining to this sort of thing I've come up with seems extremely phone specific but if there's a simple solution I'm missing thanks all the more.
ri4naire said:
So, I purchases a USB OTG cable in an attempt to try and expand the functionality of Webtop while using Nebtop. I've been unable to get any response from the phone when I plug in this cable. I've tried my wireless Logitech mouse and keyboard that worked off the bat with my TF101 using the Unifying remote they came with as well as an external TB drive.
Has anyone else had any experience with this? It seems logical that the phone supports host mode since the actual dock has 3 full sized USB ports.
All the information pertaining to this sort of thing I've come up with seems extremely phone specific but if there's a simple solution I'm missing thanks all the more.
Click to expand...
Click to collapse
The problem actually lies in the usb port of the phone itself. The dock was designed for this purpose, and the dock app handles most that for you, the one thing that the dock is able to do that a straight USB cable can't do, is provide enough "bus" power to use a mouse or even a USB stick directly from the phone. If you want to use a Mouse you will need to get a dock. I got mine directly from wireless.att.com, and it was only $49.00 back in Nov. when I got it. It works VERY well with webtop.
P.S. Motorola is very famous for doing things like this to force you into a dock, or to lock out certain features that everyone really wants to use.
I made my own dock by using a powered usb hub I had sitting around (it was actually the one that came with Rock Band for my Xbox 360). I did have to modify it slightly so that the 1 pin was powered from the 5V (a simple shunt from the 5V inner pin of the power supply solder joint to the solder joint of the 1 pin worked fine--although it might be wise to insert an inline fuse since it also charges your phone while plugged in).
Otherwise, the only other thing needed is coming in the form of your otg adapter that should short the 5 pin (common) with your 4 pin (ID). I did this by cracking open an extra micro usb cable and soldering a wire between the two.
So, my setup was like this:
1. Modified usb cable to short the 4 & 5 pins to let the phone know to go into host
2. Use a female A-female A usb coupler to join the usb cable to the powered hub (I got mine here from Monoprice
3. Get 5V to the 1 pin in the usb hub to provide power to your phone and for whatever is plugged into the hub.
With this, I was easily able to run a usb mouse and a wireless keyboard that had a usb dongle. Paired with a micro hdmi cable to hdmi-dvi adapter, I am able to use my office monitor and the webtop linux. I honestly haven't really used it much yet (if I found it really useful, I probably would have just paid for the dock).
The obvious easy way is to just get the dock. However, I really like being able to do this on my own and since I had this stuff already laying around. Also, the cheap prices from monoprice (I actually made $4 off of the purchase from a PayPal bill-me-later promotion).
So, you should be able to get it to work if you get power to the bus on your usb (but again, it might be safe to pass an appropriate fast-acting fuse, ferrite core, or something to protect from surges). I haven't had issue yet, but I also don't use it often...yet .
It sounds like a bit of yes and a bit of no. The OTG cable I got is microUSB to female full USB, am I going to need to modify this cable as you've described by crossing the 4th and 5th pins?
I'm thinking about ordering this "7 Port USB Squid Hub" since it has the 5v power adapter, do you think it might work?
Just one more question and thanks for all the help but should I not see any response from the phone when I plug in the cable? I read through some of the reviews for cheap cables on Amazon and apparently sometimes they're just useless.
ri4naire said:
It sounds like a bit of yes and a bit of no. The OTG cable I got is microUSB to female full USB, am I going to need to modify this cable as you've described by crossing the 4th and 5th pins?
I'm thinking about ordering this "7 Port USB Squid Hub" since it has the 5v power adapter, do you think it might work?
Just one more question and thanks for all the help but should I not see any response from the phone when I plug in the cable? I read through some of the reviews for cheap cables on Amazon and apparently sometimes they're just useless.
Click to expand...
Click to collapse
The OTG cable have should work. The OTG cable, to my knowledge, should already have pins 4 & 5 shorted together. I'm not completely certain, but if it's designed as an OTG, it would probably already have that done. If you have an ohmmeter/multimeter, you could try to check (it's hard to isolate the small pins, but you can try). If it's already going to the USB female (type A), you will then be able to directly attach your hub when you get it (without the need of the coupler I had to get).
When I used mine, there was no notification that said "Hey, I'm in USB Host Mode!". However, if you successfully have a mouse attached, you'll see a mouse cursor arrow on your screen.
Have fun with it and if you can't get it to work, let me know and I'll try to explain with even more detail (perhaps with some pretty pictures) of what I did. I more or less went off of what I could glean from reading what others did.
It works great! Also, it is weird to see the mouse on this little a screen, it seems oversized.
I just plugged everything in and it worked off the bat. I'm using just two items from Amazon I got for under 12 bucks (plus, of course, the keyboard and mouse I already had for my computer). I don' think I can post links to the forums yet but the ASINs for the items if people want to do this on the super cheap are as follows:
B0043TBCDS 7 Port USB Squid Hub, a whopping $5.19
B005N55WHI Micro-B USB OTG Cable... $5.99
I chose these because of their Prime eligibility and also for their form factor so as not to cover the HDMI port, I bet it's not impossible to get these even cheaper.
While this isn't technically a replacement for the dock since I had to root the device and I have to press "Load" in Nebtop if I want to go to Webtop I'm extremely pleased with the results.
I also love that all the soft keys are available. The ones I've discovered are that right button on the mouse as well as Esc are Back, the Home key is Home, clicking the wheel as well as Ctrl, Cmd, Alt and a whole slew of others bring up the Menu, but all I can find is F5 for Search.
On another note, while the phone does charge when hooked up, a practical boon, the screen still times out despite having the "Stay awake" feature checked. This is annonying when the phone is on it's side accross the room and I have to squint to see the cursor and swipe it unlocked sideways as well as click back into Mirror Display.
Hi. I've just recently tried out an app from the market that would let me control emulators and some games with a Wii remote, but it wasn't compatible with my G2x. However, I stumbled upon what is most commonly known as "OTG" cable, but discovered they were worthless for the G2x as of now because 2.3 doesn't have USB hosting.
What I wanted to know is, number one, will the G2x have USB hosting when the official 4.0 update comes out, or is it missing some special hardware needed for that? And number two, is there any risks in just getting a cheap MicroUSB to Female USB cable from a trusted seller? Like, can it damage any internal parts because of different voltages between devices or something like that? Or is the worst thing that can happen is the cable simply not working?
I'd really appreciate an answer on this one, because USB hosting seems to open up a lot of possibilities with our devices.
The short answer as of right now is NO there aren't any common ways to enable USB Host. With that said, can the Tegra2 chip in the G2x support host mode?...yes. Will it require a custom kernel?...yes. So basically your phone needs to be rooted to say the least and a kernel framework to enable and support it. I'm actually looking into this as we speak but it's looking like it'll be a while.
As for the cable... no most generic micro-USB cable won't work as is. The OTG cables have either a 'grounded' 4th pin or a disconnected 4th in some usb host modes. But either way you either need an OTG cable or if you search online you can find several ways to splice and solder back generic USB.
I have been looking for a while, but there doesn't seem to a custom kernel that supports USB Host mode. I already have USB OTG adapter (mini Male to 4 pin USB female) + arduino board etc.. So are there any custom kernels out there?
oOo B0XeR oOo said:
The short answer as of right now is NO there aren't any common ways to enable USB Host. With that said, can the Tegra2 chip in the G2x support host mode?...yes. Will it require a custom kernel?...yes. So basically your phone needs to be rooted to say the least and a kernel framework to enable and support it. I'm actually looking into this as we speak but it's looking like it'll be a while.
As for the cable... no most generic micro-USB cable won't work as is. The OTG cables have either a 'grounded' 4th pin or a disconnected 4th in some usb host modes. But either way you either need an OTG cable or if you search online you can find several ways to splice and solder back generic USB.
Click to expand...
Click to collapse
this^^^
Nothing had really changed on this front, if you want to use Android as an ardi interface, I'd suggest you grab a cheapo phone that supports it out of the box.
Sent from my LG-P999 using Tapatalk
I bring you back to life!!!
Any update on this? Seems ICS/JB roms are out now... any strides in getting OTG to work? I'm looking to make a G2x into a dedicated TV gamer unit to replace my MK808 and forgot about OTG for my air mouse. I have a Bluetooth mouse to get me by but the airmouse was awesome.
I guess I can look for a Bluetooth airmouse as a last resort.
player911 said:
I bring you back to life!!!
Any update on this? Seems ICS/JB roms are out now... any strides in getting OTG to work? I'm looking to make a G2x into a dedicated TV gamer unit to replace my MK808 and forgot about OTG for my air mouse. I have a Bluetooth mouse to get me by but the airmouse was awesome.
I guess I can look for a Bluetooth airmouse as a last resort.
Click to expand...
Click to collapse
No OTG happiness for the G2X with any ROM and/or Kernel. There is a board from Sparkfun which provides an interface that enables a non-OTG phone to work like one for interfacing to Arduino, etc.
https://www.sparkfun.com/products/10748?
http://forum.xda-developers.com/showpost.php?p=19967110&postcount=8
Hi guys,
I'm trying to figure out how many products do actually use the 11 pin microUSB connector. I know the S4 and the Note 2 do, and I guess I'm pretty safe asuming the Note 3 and S5 also have it. Do you guys know any other device having 11pin microUSB connectors?
For the rest, the advantage of this connector is the capability of having an HDMI connection, with space for additional (and simultaneous) USB connections. That means, with the proper adapter/dock, you get to have a full fledged "computer", with monitor, USB mouse and keyboard, and you can even plug external drives, all at the same time.
The ports with 5 pins on the other hand don't seem to be able, so you either have HDMI or USB, but not both at the same time.
So yeah, any other model? I'm seeing now on the search suggestions it seems the HTC Hero also has something like that...Is there any list or compilation somewhere?
Hi all,
I am trying to mod my old tf300t and keyboard dock into a dex dock for my note 9. Im not worried about the tablet portion as i can get a lcd controller for the panel. However ive been soldering and desoldering for the last 3 days. I am trying to leverage the docks kb controller and add a usb connection or modify the dock port into a usb.
I have looked at the various pinouts but cannot get the keyboard working.
I dont care about audio or sd card or the extra usb port.
Any help or pointers would be great.
Here is a mockup of the pinouts i have soldered based on the pinouts i found
Ive been trying to test it on an old s7edge incase i wire something wrong. It detects a regular keyboard but when i try this nothing...if i use the wall charger i see that the dock is charging but still nothing at the dock connector. Ive been trying with a usb 2.0 cable. Connected to the d+ d- vcc ( all 3) and multiple grounds and i pinned the sense pin to ground as well.
I have also tried to open the charge cable and solder the usb to the data pins on that both with and without ground. And use a 5v plug and the original asus plug.
The dock port is basically garbage at this point so if i plan to use that i need to use the 2 20 wire connectors and map the individual wires .
I have managed to get the s7edge to detect that something is connected. However i then resoldered the pins to try more as it wasnt working. So i need to go back to the beginning to try again. I believe my issue was due to the otg aspect of the usb. Im using an adapter for the phone but i also tried to wire the connector the same way. Ill take some pictures of it later if i can get it working
So not sure if anyone is following this thread but i have made progress.
I have totally butchered the original 40 pin connector and now am tapping into the 40 individual wires that connect the main board to the connector pcb. I can get my s7edge to detect that the usb connector is attached but it keeps telling me that a high power usb device is attached and that it needs an external power source.... so today i busted out the multimeter and i believe i connected one of the usb host vcc connections to the other vcc connections so i separated this. I also believe that the s7edge has some usbotg voltage issues so im going to test it with an old macbook pro with windows to see what it picks it up as. When i get some more time i will try to trace the other wires there might be something else needed
Maybe
Nice job, I'm not particularly knowlegdable in electronics but I remember there is a battery portion in the dock? Maybe it causes some error during otg?