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My android tablet is locked up

My android tablet is locked up





Valid till 2017/5/25



Jan 27, · Hello! I was charging my tablet overnight because it was dead and when I woke up in the morning I took it off the charger because it was up to 80%. I was using it. Replies to “Android USB Host + Arduino: How to communicate without rooting your Android Tablet or Phone”. How to Unlock an Android Tablet. This wikiHow teaches how to unlock your Android tablet when you’ve forgotten the lock screen PIN or pattern. Enter an incorrect PIN.
Tell me how to reset my tab. Generally the solution in the article will set you to go with all your requirements. Click Unlock my screen. Celestine Tablet October 23, 8: Hi Jignesh A driver is not required for communicating this way. Could you please help me in this regards, I appreciate Locked kind support. I have A old mach speed xtreme with password lock on Android wondering if u all got any info on it?
Jan 27, · Hello! I was charging my tablet overnight because it was dead and when I woke up in the morning I took it off the charger because it was up to 80%. I was using it. Replies to “Android USB Host + Arduino: How to communicate without rooting your Android Tablet or Phone”. How to Unlock an Android Tablet. This wikiHow teaches how to unlock your Android tablet when you’ve forgotten the lock screen PIN or pattern. Enter an incorrect PIN.

my android tablet is locked up

my android tablet is locked up

my android tablet is locked up

my android tablet is locked up

my android tablet is locked up

my android tablet is locked up

my android tablet is locked up

my android tablet is locked up

Amp is locked up android tablet my bit windows

Connected its charger pressed power and the battery showed and wala works. Hope i hear reply from you ASAP. You can use this firmware. Also, in case it is not properly implemented by the OEM is there any work-around to access USB devices programmatically? Hi Jignesh A driver is not required for communicating this way. When I have the SIM inserted an internet connection is active. Press and hold the Power button while holding the Volume Down button.

With getInterface 1 the second interface is selected and my guess is, you need the first one. Also please note that the setup routine in this example is for the Atmega16u2 with LUFA and does probably not comply with the profilic.

So I got the cdc-acm. All well so far.. I have made an app similar to yours that retrieves list of devices connected using UsbManager. This works on higher end tablets like Acer Iconia, Xoom, etc.

But it fails for the current tablet based on Allwinner A10 I have. Is this due to the kernel requirement? Is your device simply not enumerated when using getDeviceList or is there an error thrown?

Check out post 29 on this thread: Add that XML file to your tablet and reboot it. I struggled with this for days. Hope this helps you along, and thanks to the author and those who contributed. I had almost given hope on CDC devices thinking that the drivers were missing etc.

Thanks to the author sztupy on XDA indeed! Basically I noticed that cdc-acm. Another thing noted is that usbserial. Any idea what it is for? I actually never tried to connect. However, since the interfaces of the HID device is probably already claimed by the input driver, it would be difficult to use them in the app.

Maybe it is just the default configuration of the Kernel and the OEM did not really look closely into it. Basic question but I assume answer may be useful for many readers: I uploaded soft to arduino uno and built code in eclipse.

Now I am wondering where is the problem as changes in slider position do not impact brightness of the LED. Sadly the emulator does not support USB forwarding. Thus, it is not possible to communicate with the Arduino with the mentioned method.

However, you could give Virtualbox or a similar Virtualisation Software a try with Android x Thank You very much for wonderful article. By now — I am able to communitate with printer from simple desktop Java app using libusb library under Windows7.

I would be very happy, if You could answer a few questions: As I understand — I need Android device 3. Does every device with Android 3. If answer to question 4. If I understand you correctly this is what you want to do, right?

But I would like to clarify questions 3 and 4. Although almost all the hardware parts would support it, some OEMs cut it out of the Kernel. The Galaxy S2 does not. Also the Galaxy They just whitelist only mass storage, so you cannot use the API That is incredibly stupid in my eyes and there is no justification for this — it is pure idiocy of Samsung nothing else.

So before you pick your device, check first if you find any information about the API compatibility. I hope it will be very helpful for all developers:. There is a big fragmentation in this matter.

Sorry to bother You, but I would like to ask You one more question. Thanks for sharing your knowladge. Can you help me to create some serial terminal code? One of the controllers has grbl firmware.

It respond to commands like: G0 X50 – Y10 Z0, arduino nano will respond to single numbers and letters like 1, 2, c, d, ets. I would also like to thank you. With your examples I have been able to transfer blocks of data to an Arduino and verify the transfer was correct.

However, in going back to the Galaxy Nexus from the Arduino, block transfers are failing. Some of the bytes at the start of the transfer are correct, but the full transfer is not received.

This is true whether I use a bulk transfer or an asynchronous transfer, all at Would you care to comment if this problem might be on the Android side or the Arduino side? Any suggestions would be appreciated.

I noticed that reading from the serial device Bulk IN transfers are to be handled a bit differently. If something happens to be in the serial buffer, then the length of the bulk transfer will be!

As far as I know, the request length is only available when you use the synchronous usb library. So you need to handle threading etc. Both the asynchronous version, commented out here, and the bulk transfer yield a few correct values of the 8 byte transfer from the Arduino but never the whole buffer.

Other forums have pointed out the transfer count is not available for asynchronous transfers, a failing of this version of Android. The Arduino code is:. This sends an 8 byte buffer back to the host after receiving the input buffer and a small delay to verify the transfer was correct.

Manuel, I may have found a problem with my code. I changed the transfer rate from the original to, but, more importantly, I increased the priority of the thread that was actually doing the transfers.

Previously, I had set it below the priority of the user interface; it is now set to I have not done extensive testing but it does seem to be working now. Thank you for sharing this!

Please keep us posted about your further experiences. I have a good news: All the best Thibault. I have an Arduino ; would that be the source for error? Could you please provide more detail?

A step-by-step walk-through would be just wonderful, if possible. I just recently bought an Ainol Novo 7 Paladin tablet the cheapest one that I could find and I would really like to use it in a home automation project that I am working on.

And I am starting to lose hope that I will ever get this thing to work. It would probably be better just to use a raspberry pi as a cheap realy that would send the data via network. I just looked at the kernel driver of the pl http: I think the problem might be device initialization.

I think checking out that code could help you to get started. Simply because I have some trouble understanding how this actually works. But I just managed to find the slick usb serial library demo and I must say that the example application works great.

Could you send me firmware files usbcontroller. I have rooted my device, upgraded it to Androdid 4. I have also installed and executed the diagnostic tools for USB Host mode mentioned by Mateusz in is previous comment on June 9, Do you have any idea about what can be wrong?

Many thanks in advance. Your help is greatly appreciated since I have been struggling with this for 3 weeks…: Your best bet is to use a custom ROM Cyanogen for instance and try with that.

Samsung really sucks in that matter. They pulled that crap on all their devices but the Galaxy Nexus. Thanks for this very useful post. I have also tried with a couple of external storage devices and thumb drives but the USBManager always seems to return an empty list for connected devices.

Also, could you pls. Thanks a lot, works like a charm! Cool to hear that you were able to put everything to good use! Thanks for nice guide. Could you please port it to Arduino IDE code?

We are not using Studio, we are using Eclipse. Check out our first Tutorial in the Series to get started. Can anyone send the driver to me? BUT sending makes me real headache for quite a wile now!

Do I have to prepare the data somehow? I tried to send back the received data byte by byte but no luck and debugging between the Out-endpoint and the USB gateway is not possible.

May be you have some hints for me for further investigation of my problem? What could be a problem though, is that the gateway offers more than one set of Bulk Endpoints.

PID what the endpoint numbers exactly are and then try to address them in the code directly. In the code of the example we just take the first set of bulk endpoints, which might work for the IN endpoint, but probably the OUT ep is the wrong one.

Also for easier debugging I recommend using a PC and to run some pyusb script. Thanks for your reply. I have tried with your code as well as I have developed a very simple test program to check for and list attached USB devices but that is also not working.

I am struggling with this for a very long time. Thanks a lot in advance…. Somehow the Manifest file did not appear in my above post. Here is the Manifest file for my project. Thanks for your prompt reply.

Both these devices claim to support Android API So the code shoul;d work fine on these tablets right? Also, I have a question if as per your comment the USB Host API was stubbed out of these devices then how could my code compiled and runned without error on these?

Could you put some light to this? My guess is that some OEMs just lack the knowledge, manpower or the motivation to do the implementation of the Android Framework the right way. Meanwhile I would liek to know is there any other way to check if the Android framework has been properly implemented on the device to support USB host API or not?

Also, in case it is not properly implemented by the OEM is there any work-around to access USB devices programmatically? We plan on using this in a quadcopter control system, where the Nexus sensors are used to stabilise the craft.

Now we just need to write the control code: If so, keep in mind, that you cannot power the phone and use OTG at the same time, and power will be drawn more quickly than without USB attached.

I did have a few question though. And let it be powered by android if the phone has host mode enabled? Or should I use the ADK? And if I power my arduino from something else, do I still need the usb otg cable?

Thank you very much. For that you need to recompile your kernel and flash it onto your phone. If you run a custom ROM I am almost certain, that you will find a howto for kernel config.

Then, when OTG is activated on the kernel side, you should be able to attach a device via OTG converter and see it powered. If it is not powered, then you can still use a powered hub this is only a guess though.

Also if you are running 4. Is it possible doing the same thing in the Arduino IDE? Will your approach here work in this scenario to communicate between the phone and the peripheral?.

Would you be available for a short consulting work to advice our developers on how to make this work?. If so, please let me know, we greatly appreciate it. I have a RFID reader connected and trying to communicate with it from my android app.

I need to sent this command: I was trying to do something like this:. I see that you are doing a Bulk OUT transfer in your code. Should that not be a Interrupt OUT transfer? The second part of the code seems correct to me.

I have tried out this also: But this also seems to not working properly. Hi Manuel, i have tried developing a sample app to detect usb. Can you please help me out.

I want to run PrintRun? Pronterface is a 3D printer host software written in Python and available at https: Marlin is available at https: Hi Manuel, Thanks for the code. On linux I am able to communicate with board verified with lsusb, but when I connect with Android Tab 3.

Do I need to add driver in Android tab for that, if yes can you provide steps for that. Have you also installed the above firmware on the Arduino? That is, VID is 0x or as a decimal value.

The returned HashMap by mUsbManager. Can you check if the HashMap is empty? I am using Samsung Galaxy Tablet But not able to work with other usb devices. If I get chance to test it with another cheapest tab; I will update you, but it will takes some time.

If any body tried same way with other or Samsung Galaxy Tablet I am new to electronics or i would say a learner, but i have very good experience of software development.

If you need power, then you should go with the ADK. Thank you for the quick response, I am working on a prototype and i m sorry i can not share what the idea is but just wondering that while going for production we will have to embed this ADK in our devices, wont they become so expensive?

The ADK really seems to be the best option for you. I am sure you will find some example code for firmware as well as for the Android side software. For production you would have to include the micro controller into your own hardware design.

Can you help me out? PB5 is simply defined as 5. Kind of strange that it is not defined when compiling with the Arduino IDE though. I just tried with a Samsung galaxy ii T wit Cyanogenmod 10 and works nicelly.

I had to make a few changes to make it work without problems in the Arduino IDE. I tried to use this tutorial with my arduino duemilanove and my google nexus s with 4.

When I connect the arduino with my MAC it is recognized instantly. Am I doing anything wrong or I have to do anything more than this tutorial? I just use the UsbController.

Thanks for the fast response. I think that this is possible if I change the kernel. I will search about it. Hi Manuel, Thanks for such a detailed post. Using above application I expect to see any device be listed when I try to access it through an application.

Unfortunately not a single device can be found. Under Androidx86 and various real Android tablets, everything works fine with the exact same code, but the beagleboard never let me access USB devices.

I am using UsbManager class in order to enumerate the android devices connected to the same but I am unable to get the devices list. I checked logs, its UsbDevice. Is there anything i need to change in the init.

I am sorry that it seems not to work with the Beagleboard XM. Does the board get powered when you connect it? If you get an empty list of devices back then usually it means either the board is not enumerated, or the framework part of the UsbManager has not been implemented correctly.

However, we have devices with the ACM driver here as well and they seem to work. Please keep me posted on your development, since we always get requests in the comments about devices not enumerating empty list issue.

The board gets powered properly but unfortunately, the led is being very low-dimmed and moving the slider doesnt change anything, also, the enumerate-button doesnt do anything.

Coincidentally I know what the problem is! We had that too, but only sometimes. We did this for the mega, however you need to adjust the partno – p for the uno and I cannot find that one. Hope this gets you started though.

I think you will find some on ebay. Wow, awesome speed you got there! Was 99, and is now 0 Would you like this fuse to be changed back? I get something similar. Have you tried to use a powered hub?

This should prevent the board from having brownout problems. I checked again and I did not find any solution… it seems that the fuses are somehow locked … I bet it would work with an ISP.

Hello Nice and helpful article. How do i know the board arduino or any other i have works as USB host or device? Is there any other alternative way to communicate to a external USB host with out using ADk or Open accessory protocol from my android device.

Suppose I have host device connected to my android which gives me room temp every 5 min. The Arduino Due for instance enables you to connect as both Host or Device. You should check that one out.

First of all, thank you Manuel for these helpful articles and for providing a platform for like minded people. I want this board to be the main controller.

It therefore needs to communicate with the USB stick. Inside the stick is a prolific chip with 3 endpoints. Is there anyone over here who got communications with this chip working.

If not, does anyone want to collaborate on implementing the soft driver for the chip? I bet you can get the profilic to work. What you need to do is to find out what setup commands it uses.

I think there is even a usb serial library that has that code snippet inside. If not, then you need to look through the kernel driver, there it is for sure. I guess, one would have to modify the user-mode soft-driver logic to fir the FTDI serial protocol, right?

I would like to know what exactly is the board arduino you used in the project. Can you please help me on this? Any help will be much appreciated. A google account was not set up with this tablet.

I tried too many patterns to unlock this tablet that is why I am locked out. Sign in with your Google account. I have a viewsonic tablet android and it is locked out because of drawing a wrong pattern several times.

I have tried all the methods prescribed above and none of it is working. Even though there is wifi on my tab says no internet connection. I tried the hard factory reset too but it doesnt work.

My eurostar etc-p12 tablet is locked…The does not have a sim slot, i am unable access the internet wifi turned off.. On top of that usb debugging is turned off.. Only solution left is I need to run a flash but drivers for my tab are not available…..

Please upload the drivers…. Without asking her the pattern security, I tried a few myself until I got locked out for too many pattern attempts. Tablet says to visit google. Her hotmail address and my gmail address are in no way attached.

I have been reading your answers above and have tried pushing the power button and the volume button for 15 sec. I am beside myself now and do not know what to do to fix this problem so I can use this tablet?

There is no name at all on the tablet It is a Ice Cream Sandwich and a Android 9 inch from China Still locked out, wanting me to sign in with my google account. I understand your situation we will be soon uploading a new method using computer and Android SDK to unlock the tablet.

The method is still in development. As soon it is done we will also mail it to you. I forgot my username and password in Penta ISC tablet? How to unlock Penta ISC tablet username and password.

Hello Sir, im having the same issue here. I have Rich and HL tab, and theres a hole in it. But when im trying to insert the pin, i cant feel any button inside.

I can touch something but i think its more of a pcb board or something like that. Ive done it twice but after that i have no luck, just turning on and off. I am using UBI slate 7Ci. The system is locked using the pattern lock, and I have forgotten pattern.

I tred to hard reset it following the steps. My tablet is locked by too many patterns.. But When I type that…,, But.. For his problem use ask him to send the picture or video on your email address.

Hi tablet guru, i have a Android Tablet 7 inch 4. Hope i hear reply from you ASAP. I have a Ubislate 7CI tab which is locked now. And appearing window demands Google account details. Moreover there is no physical home button and no reset hole either.

Please tell me how can I open my tab from here on? I have seen your solutions and suggestion and I did formatting by pressing start and home button but after that one picture is shown on screen like android is damaged by showing sleeping android.

We will revert immediately with the solution. Send it on admin mytabletguru. Sir your help in this matter shall highly be appreciated. I am using a Micromax tablet. I forgot my password pattern and I followed your advice by pressing the reset hole but nothing is happening.

Hey pem, the above method is correct I got my funbook talk p restarted. Press the power key first and then press the both volume keys up and down together and then take a safety pin and enter the pin into the reset hole n press it for 5 sec.

Get the pin out of the reset hole now the tab Will turned off now restart the tab it Will take around 7 mins to restart and now tab is as fresh as it was when you bought it.

Me to bhaut khush hu tension ho gayi thi mujhe to. I tried to open my tablet by volume key and power on key together. Try Reset by gently pressing through the reset pin-hole.

Find this tiny hole on one of the sides of the tablet. Use a clip or similar fine stuff to get it done. Hey Chintan, CHintan am sure there will be a reset pin-hole. Press that using a fine thing and with this we wish your tablet gets fine.

Please reply and share your experience. So I have no idea how to unlock it.. Would prefer to try fix it ourselves before taking it to the shops.. All you got to do is look for the power button and the physical home button.

In case there is no physical home button in your device, am sure volume buttons will do. Again if physical home button is absent then use the combination of Power button and Volume keys and perform the same process.

So, it is advisable to remove your external memory card and save its data, before you carry out hard reset. Okay then, let us know if it resolved your issue. Further if the tablet is still locked, contact us with your tablet model details.

We will be happy to help with our best ability. I have bought my tablet from dubai. I have used hard reset. It have opened something which have 21 options in language.

When I looked on google it seemed that language was Korean. I have tried to press something it opened camera, song etc, but it is not showing the main page. Please help me how to solve this problem.

Hey, can you find a reset pin-hole in your tablet? If an option for language selection appears, carefully select English. I reckon it shall resolve your problem. I have penta isc tablet.

I tried to format it because it was locked. Pls help me to recover it. Did you managed to sort your problem. Google Nexus Tab Pattern Lock. How do I get into my tablet I forgot my password.

Mine is a Samsung tablet and it has been locked as I forgot my password. Submit model no of your device. Try to hold power key for sec. Model no of your device. Item model number-FastTouch A Great forum my tablet is working again thanks so much.

Mention the Chipset on which your Tablet runs like intel, rockchip, allwinner etc. Yashica hd 4k 3d tablet unlock. My tablet doesnt have a forgot your password. Button is there any other option?

Try the hard reset method then. Link has been updated. Follow the steps above to unlock it.. Juan Carlos Hernandez Alonso. It can be easily removed through hard reset method.

Check the hard reset link in the above post. I put a pin in and cannot remember, I have a Google Tablet. And I want to know how to backup the tab through custom recovery.

It does not help me get in my table android. Thanks Man you are a genius keep it up!! Try the volume and power. Now enter into the recovery menu by pressing volume down and power button together.

Feer kese open hua. I need help getting into my Proscan tablet I am locked out. Ashin Khan I want to unlock my tab. Have you tried the solution 7 as mention above.

Dear i have also EuroStar Tablet Model: Please replay meincz hotmail. In that case install Android on your tablet. I think this will work. I have an bsnl penta t-tab wsc i have lost its pattern arrangement now how to unlock it.

Try to use your google account to unlock it. Hi, I have Huawei mediapad link 10 Tablet. Can someone kindly help in Unlocking this Thanls. Can I ask what will happen if I press the reset button?

Hey i need help with hard resetting my tablet it has no volume buttons. Nidhi in this situation you need to flash your tablet. Thanks to you for the superior solution, I reset my tablet and backup my data.

I have a china tablet. Hard reset methods does not work on China tablet. Love to hear that.. Thanks for suggestion now it is working. Which tablet you have got.

We have successfully tested the case 4 with Microamax tablet. Try again, this will work for sure. Hard rest your tablet. See the third video from top in post to get the more info.

Click on that and a another menu will appear. In the appeared menu click on the Yes-Delete all uer data. The very same process has been described in the third video in the post. Self-driving cars are stuck at idle, while driver assistance accelerates.

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Tablet locked up android my is kills with pistols

This was removed in Android 5. This method requires that your tablet currently be connected to a wireless network. If this button doesn’t appear after 5 incorrect attempts, your device does not support this method.

Enter your Google address and password. Make sure this is the same Google account that you are signed in with on your tablet. Open Gmail on another computer or device.

You’ll be receiving an email to reset your passcode information. Open the message received from Google. It may be in the Updates tab. Click the link in the email. This will take you to a form to create a new unlock code.

Create a new PIN, password, or pattern. This will be your new temporary unlock sequence. Use your new pattern to unlock your device. It may take a few minutes for the tablet to update with the new unlock method.

Set a new code. Once you’ve unlocked the device, set a new code or pattern from the Lock Screen menu in the Settings app. Open a web browser on another computer or device. If you have a Samsung tablet that is signed in with your Samsung account, you can use the Find My Mobile online tool to unlock your screen.

Visit the Find My Mobile website. Sign in with your Samsung account. I uploaded your firmware code on mega adk, and also installed android application on Nexus S and galaxy nexus. The Galaxy Nexus on the other hand should do fine.

Or do yo have any code that helps me to achieve it? You can do it with a slightly modified version of the software code on the Android side. Can i ask you for code for Arduino side in format of ino?

I am programming on Windows 7 with Arduino 1. I tried to modify code for Arduino — http: When i left PID on 0x nothing will happend. When i changed it to 0x then activity will failed on nullpointer exception caused by conn if!

I am very new to android environment. Pls help me, this is my mini project to be submitted to the college. Having almost no knowledge of android development I would like to seek help from you.

I only need a kick start for which I need a simple app which has a button and a text box. Looking at what you have done I believe you could help me…. Thank you for your work on this. I did finally get it to work.

I have the exact setup you describe here. Oddly, I had to change the baud rate on the arduino side to to get it to work. Do you have any idea why this this is? Thank you again for the very informative article.

I test many device, you say that. Manuel Di Cerbo Post authorJune 4, at But I want to know how to deal with the interrupt IN EP a typical hid device which required to poll periodically.

Could you give me some approach or code snippet about this? I am working with Raspberry Pi. Based on your code I am able to list the devices. This Xstick is attached to RPi. I know I need to use these.

Then if i type the above two lines nothing happens. Please can you explain how to read the temperature readings on XStick using adb? Is there a way to debug the code? I use it in my new MK The error continues display.

It enters a loop to get some USB host profile. I perform ps through ssh, found a process:. It seems I cannot continue without such required file. Where can I download such USB host profile? Or any other way to skip or create it?

I would like to ask a question here. Is there any way to skip the permission granting dialog? It shows such dialog after reboot the device. Hi, This article is a godsend! I was able to get this running on a pro mini knock off by deek-robot.

I am working with acer B1A71 tablet. I have deployed most of my apps on it and working fine. Now I want to make it as a USB host. Could you please help me out.. MIne is a rooted tablet and kernel version is 3.

I have no idea how to check if it supports that API. This example you posted got me talking to the board. But now I have been trying to make the same thing work for a TI Launchpad and everything seems to be breaking.

Hi Manuel i connected and sent data from android tablet to arduino board. But i want to send data arduino to android too. How can i listen received datas in android?

In imported packages i didnt see any receive function in java. What i should to do? I have one I could help you schedule one arduino to send data to the application in android but not how to make android application displays data onscreen arduino sends me.

Hi, Thanks for a great tutorial. Managed to almost get everything working… Except that the led for me on pin 13, arduino uno rev3 not get lighted. I can see that RX led flashes when i move the slider.

But nothing happens on the led for pin I changed PID to 0x And so a little Christmas wish. I think a lot of people out there would be extremely gratefully if you added a section on how to read values from the arduino and present them in the android app.

Im try this connection with Nexus 5 and arduino mega Im little modify code: Also when I connect nexus via usb and push Enumerate. But When I change slider, on board diode EX is blinked, but other dioded is stop blinked.

Im using nexus 5 and arduino mega Device us connected, but transfer is not working. How to communicate without the roots of your Android tablet or phone. Work very fine also Arduino Mega rev3 with: I have used the android package for a demo in a talk during Linux Day Bari.

I copy your conn. I used the usb controller and it worked with a arduino mega. I have only one problem figuring out the baud rate for midi, asynchron for the controlTransfer. However do you have any code suggestion for reading from Auduino to Android.

Manuel, Sorry for duplicating this comment. Replying to your note in March stuck my comment back there where nobody may notice it. Thanks so much for this article. But when I try opening the connection using the UsbManager.

Iam new to this field and cannot figure out where the possible problem could be? How to set up them in the sketch? I need to hack the USB Permission to connect with arduino device. Is there a way to use a bluetooth connection since every mobile device today is provided of a bluetoorh stack?

From Arduino side maybe a bluetooth adapter could do the job. BUT my phone KitKat 4. Micromax A Colours 2 indian brand running KitKat 4. The phone reports the following info about the connected Arduino: Communication Device 0x2 Vendor ID: These three apps are able to provide this info: I need a program that simply reads the USB port.

Your email address will not be published. Hey Leon Is it possible that you have an Arduino of Rev. If so, then you can try to initialize it with the commands: Also please check with lsusb on your computer what interfaces you have on your Arduino.

All the best Manuel. Thank you for this post, exactly what I was looking for! Thanks, Zach and Zsolt. Have a look at the method: Hey Savcat, This will work with the Gnex.

Indeed, there is no FTDI kernel driver loaded. Just not for FTDI? Thank you so much! Hey Paloma, unfortunately the usb host api will not work on the emulator. Hello Paloma, The problem might be that your tablet does not support the usb host api.

If you have a rooted device you can add the file android. Check the other replies in the comments for more details. Thank you so much Manuel…you found my problem! Hi Giovani, I think as well, the purchasable solution is done the same way, however, I never had a closer look.

Hello Zion, Thank you for your comment on our blog. Hello Manuel, Very interessant article. My hopes remain that they will bring an update that enables OTG again. Hi Manuel, Thanks for your quick answer.

I also hope that there will be an update … All the best Thibault. Hi Lennert, I tested it with the new Arduino Board that is equipped with the Atmel-Lufa variant of the serial converter. Hi Neurobe, Thank you for the input!

Lennert, Try connecting via a hi-speed hub. Let us know the result! Thank you so much Neurobe! This is very helpful! Hello Emanuele, Have you tried heimdall for flashing the tablet?

Hey Emanuele, Sorry to answer that late… In Samsung builds you link the initramfs statically to the kernel. Hi Manuel, Learned a lot from your blog and all discussions! If anyone faced the same problem and find a way out, please let us konw, tks!

Thanks for that code. Hi Felipe, Check on which interface your bulk endpoints are running using libusb – v for instance. Thanks for the reply! Hi Manuel, Thank You very much for wonderful article. Thank You for answer.

Thank You for Your answer. I hope it will be very helpful for all developers: Manuel, Sorry to bother You, but I would like to ask You one more question. Hi Manuel, Thank You very much for fast answering, and sharing Your great knowledge.

We are using something like this: I believe my code is functionally identical to yours: The Arduino code is: Hi Manuel, I have a good news: Thank you for noting! I am new to Android, have some experience with Arduino, but not much.

Hi Roli, I just looked at the kernel driver of the pl http: Hi Manuel, Thank you very much for sharing your knowledge and kindly answering the comments to your post. Hi, Thanks for this very useful post.

Hey Sayan, I believe what you are looking for is something like this: Hey Kracha, Cool to hear that you were able to put everything to good use! Hey Pete, We are not using Studio, we are using Eclipse.

Dear Manuel, first of all many thanks for this great article. Many thaks in advance and kind regards, Steven. I am glad the article helped you to get started.

Hi Manuel, Thanks for your reply. What device are you using? Hi Manuel, Thanks for your prompt reply. Hey Sayan, In short: Your code runs fine, but the Framework just gives you an empty list of USB devices back.

I hope that shed some light on the problem. Hi Manuel, Thanks for the clarification. I will try to check with the device vendor regarding this. Hey Manuel, We plan on using this in a quadcopter control system, where the Nexus sensors are used to stabilise the craft.

Hi, thank you very much for this post. Hi Manuel, Thanks for putting together this very informative write-up. I have a question on a project I am about to undertake as follows: Hi Manuel, Thanks for the quick response!.

I have another follow-on question: I was trying to do something like this: Hi Manuel, I have tried out this also: My code will look like this. Hi Jignesh A driver is not required for communicating this way.

I am appreciating your help, thanks again. Hello Manuel, first of all thank you for the article, and sorry i am a bit late here as this post seems to be older. Thank you very much Tariq.

Hello Tariq, Thank you very much. It is pretty popular and has an active community. Hi Manuel, Thank you for the quick response, I am working on a prototype and i m sorry i can not share what the idea is but just wondering that while going for production we will have to embed this ADK in our devices, wont they become so expensive?

Sorry for the second post just trying to be more specific. You would then attach your sensors to the ADK and use analogue inputs to measure them. I hope this gets you started. Hi Manuel, Thank you for your guidance, I did some more research and found the following: Hi Stan PB5 is simply defined as 5.

Hello Joao, the nexus s does not feature usb otg. Hi, Thanks for the fast response. On a separate note, with the Linaro build on the Pandaboard we have been able to communicate. Hey there, thanks for this awesome write-up!

This command should fix it sudo avrdude – p m – c usbtiny – U lfuse: Hello Tim, I did this in a terminal.. Maybe you need an ISP programmer. Now all I get is this: Hello Tim, I get something similar.

I mean a hub that is powered with a 5V power adapter. Hi all, First of all, thank you Manuel for these helpful articles and for providing a platform for like minded people.

Thanks very much, Willem. I will have a look into the matter as well. Never mind, the code should work… Have not gotten it to work myself though. Hope this helps others! Hi Dylan, it is possible, yet you will need to adjust the control transfers and possibly the polling mechanism.

Hi Laura, the parameters are extracted from the libftdi api which is open source and for the rev 3 arduino from the source of the firmware lufa running on the 16u2. Hi Nikola, Are you able to grant your application permission for your Arduino?

What do you think does it mean? But i tried with usb Mouse and Keyboard and it works. I can control the phone with them. You still think that Usb API is not supported?

Can i fix it by rooting the phone, because my phone is not rooted? This application uses two different methods to collect information: Please note all the consequences for your device warranty when rooting your system though.

I will try this method, and let you know what have I managed to do. Android Community – For Application Development. Hi I am student and currently working on a project for my univerity. I hope you can help me with this problem!

Did you ever find a solution to the setup for the TUSB in your project? Currently we are using the same as you use d Arduino Uno Thanks for your help in advance! Hi Manuel, I am also interested in receiving data back from the Arduino.

Thank you for your great work. I am trying to make your solution for Mega ADK, but it is not easy… I uploaded your firmware code on mega adk, and also installed android application on Nexus S and galaxy nexus.

But Mega ADK did not respond. It was still in power off status even I connected to Nexus. Do I have to change more? Could you help me what do I have to change?

Thank you in advance. Thanks very much for respond. Now whether a device can achieve this function? What do I need to write their own drivers? Does now it have any way to slove it? Hello Manuel, I am working with Raspberry Pi.

I know I need to use these conn. Many thanks for this article. Then you should recover it using your email address by clicking in the corner of the lock screen where it says “Forgot password.

Not Helpful 0 Helpful 0. How many times can I flash my Android tablet? You can flash your tablet any time you want if you don’t make mistakes like installing an incompatible “ROM”.

How do I connect my phone to my pc? Answer this question Flag as How can I flash a tablet that freezes from onset when I power it up? How do I find the unlock pattern on my Samsung tablet?

Already answered Not a question Bad question Other. Tablet Computers Android In other languages: Thanks to all authors for creating a page that has been read, times.

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Help answer questions Start your very own article today.

In that case you have to you have to re-install Android. But first get the SD card repaired in any mobile repairing shop as you need a working SD card slot to install Android.

I am using a micromax Funbook Tab and getting error, Too many patter attemts and I have forgottten the user and id password. I tried above all steps by using power and voulme keys and also inserted pin for reset but no option came for Factory setting same error message displayed, too many patter attemts..

Step 4 will work for sure. We have personally tried and tested it on Micromax Funbook Tab. Try it once more. Even after that it did not get unlocked then I would recommend you to reinstall Android on it.

See this post to know more http: I have lenovo idea tabAAH tablet it has no home key. Then you have to follow the forth steps as mentioned above. Press the volume and power button together to enter the reset mode.

It has only a power button there is no volume or home button. Please help me bring my tablet back to life. I have Micromax funbook talk P, it is locked due to too many wrong pattern attempt and also WiFi is showing off.

There is no physical home button through which I can recover my tablet. Hello there I am having problem with Karbonn Smart Tablet 9. Hi Cheerag, You tablet is stuck at the boot menu.

Hard reset or reset key will not work in this case. Hi there, I have an china android tablet.. I just want to format my tablet. Most of the China tablet can be formatted using a boot-able memory card.

The process of making a boot-able memory card will be soon published in the site. Robot II tablet, probably china made.. I have the same problem.. What shall I do? In this case use the Google application specific password method to unlock the tablet.

See the second video in the post for more detail. Sir I am using byond mi-book m1 tablet I forgot my patter and its locked now how can i get rid of it….. You have entered into the reset mode.

Now to get the menu option click on the either Home button or back button. There you will see the option. When I have the SIM inserted an internet connection is active. When I tried the buttons sequence I can only get to the Android Icon laying with an red exclamation symbol over it.

I will appreciate your help. I found a way. After that, press the same buttons intermittently until the recovery menu appears. Thanks for your advise it worked for me, tablet is now working, its only that you loose sum apps but the music and videos is there, Thanks.

I have Suntab tablet it has no home key. It is locked due to too many pattern attempts. I tried to do the hard reset by pressing power and home button but it is not working. I have a 51cubee u26gt.

I have the same problem as above but there is no volume or home button only a power button and a reset hole. Can you please help me in hard resetting it? We have gotten to the part where you hold the volume and the power button down at the same time.

We get the little android bot pops up with the gears rotating on his stomach and then a bar flashes really fast across the bottom of the screen. Can anyone help us with this problem.

It would be really appreciated. Plz help me how to make my table alive. Sir your help in this matter shall be highly appreciated. How to do that?????? I did formatting by pressing start and home button but after that one picture is shown on screen like android is damaged by showing sleeping android….

I have android Tablet Model: My current screen is asking me the Google id and password. Could you please help me in this regards, I appreciate your kind support. I have a 7 inch Merlin android 4 tablet PC.

No matter what I do I can not access the recovery screen. There is no request for a google account password either. You just get 5 tries after which you have to wait 30 seconds and can try again.

My tab got locked the same way and as said in step 3 I did but still my Micromax funbook is not getting opened. I have Adnodoid Tablet Model: Lava My tablet is locked by trying too many patterns..

Thanking you Sir, Pradeep. It belonged to his son. It is of course set up with a password and neither of them remember it. Nothing works, I hope you can help. I have a dragon touch android tablet.

Where is the reset button!? I put in the right username and password but it goes black and when I press the power button and it goes right back to the screen where it asks me for my username and password.

Which tablet you have got? Also the only way now is you have to unlock the tablet through the debugging mode. The method for that will be soon published. I tried the combination keys vol up and down and power button then press the reset button nothing happens.

Hi Guru, I got a tablet Micromax funbook infinity P with locked pattern because of my friends tried too many wrong patterns. I tired to reset it following your steps. When i press the reset button the tablet is starts again like switch on it and the same page of asking google id and password is coming.

Tell me how to reset my tab. The registered Google account will show your tablet as the registered device. I am able to unlock pattern by putting correct mail id and password for my locked pattern of iberry axo3g tablet.

I recently bought an Android 4. The tablet has a reset button, the volume keys and a power button. I tried the methods you mentioned above with no success. Can you please help me on this? Any help will be much appreciated.

A google account was not set up with this tablet. I tried too many patterns to unlock this tablet that is why I am locked out. Sign in with your Google account. I have a viewsonic tablet android and it is locked out because of drawing a wrong pattern several times.

I have tried all the methods prescribed above and none of it is working. Even though there is wifi on my tab says no internet connection. I tried the hard factory reset too but it doesnt work.

My eurostar etc-p12 tablet is locked…The does not have a sim slot, i am unable access the internet wifi turned off.. On top of that usb debugging is turned off.. Only solution left is I need to run a flash but drivers for my tab are not available…..

Please upload the drivers…. Without asking her the pattern security, I tried a few myself until I got locked out for too many pattern attempts. Tablet says to visit google. Her hotmail address and my gmail address are in no way attached.

I have been reading your answers above and have tried pushing the power button and the volume button for 15 sec. I am beside myself now and do not know what to do to fix this problem so I can use this tablet?

There is no name at all on the tablet It is a Ice Cream Sandwich and a Android 9 inch from China Still locked out, wanting me to sign in with my google account. I understand your situation we will be soon uploading a new method using computer and Android SDK to unlock the tablet.

The method is still in development. As soon it is done we will also mail it to you. I forgot my username and password in Penta ISC tablet? How to unlock Penta ISC tablet username and password.

Hello Sir, im having the same issue here. I have Rich and HL tab, and theres a hole in it. But when im trying to insert the pin, i cant feel any button inside. I can touch something but i think its more of a pcb board or something like that.

Ive done it twice but after that i have no luck, just turning on and off. I am using UBI slate 7Ci. The system is locked using the pattern lock, and I have forgotten pattern. I tred to hard reset it following the steps.

My tablet is locked by too many patterns.. But When I type that…,, But.. For his problem use ask him to send the picture or video on your email address.

Hi tablet guru, i have a Android Tablet 7 inch 4. Hope i hear reply from you ASAP. I have a Ubislate 7CI tab which is locked now. And appearing window demands Google account details.

Moreover there is no physical home button and no reset hole either. Please tell me how can I open my tab from here on? I have seen your solutions and suggestion and I did formatting by pressing start and home button but after that one picture is shown on screen like android is damaged by showing sleeping android.

We will revert immediately with the solution. Send it on admin mytabletguru. Sir your help in this matter shall highly be appreciated. I am using a Micromax tablet. I forgot my password pattern and I followed your advice by pressing the reset hole but nothing is happening.

Hey pem, the above method is correct I got my funbook talk p restarted. Press the power key first and then press the both volume keys up and down together and then take a safety pin and enter the pin into the reset hole n press it for 5 sec.

Get the pin out of the reset hole now the tab Will turned off now restart the tab it Will take around 7 mins to restart and now tab is as fresh as it was when you bought it. You will need to root.

But as well as acting as a safety net in case you uninstall something important, Titanium Backup can also be used to backup your user data… any and all user data. Even better, once rooted you can create complete backups of your entire handset using the ClockworkMod Recovery option, providing you with extra protecting in case of a major malfunction.

Recovery can only be accessed before booting into Android, but it provides additional backup options in case, for whatever reason, Android fails to boot properly or experiences a crippling error.

This makes ClockworkMod Recovery an essential tool for those looking to install custom versions of Android. We all know manufacturers are often pretty slow at delivering the latest Android offerings even to their flagship handsets, let alone aging devices.

Some are getting better at it, but this is still an ongoing issue for many users. Pretty much every semi-popular handset has a decent following of developers working on porting the latest versions of Android to their handsets, most of which can be found over at the XDA Forums.

Not to mention that most custom ROMs are updated to the latest version of Android very quickly too, bringing you the best of both worlds. Remember when all phones were slow?

Well, not all, but they all needed that extra push. A very popular thing to do among root users was overclocking the processor to make things more snappy.

Even mid-end smartphones are pretty fast now, so there is not much of a need, but some of you may still want to speed things up. This sends an 8 byte buffer back to the host after receiving the input buffer and a small delay to verify the transfer was correct.

Manuel, I may have found a problem with my code. I changed the transfer rate from the original to, but, more importantly, I increased the priority of the thread that was actually doing the transfers.

Previously, I had set it below the priority of the user interface; it is now set to I have not done extensive testing but it does seem to be working now. Thank you for sharing this! Please keep us posted about your further experiences.

I have a good news: All the best Thibault. I have an Arduino ; would that be the source for error? Could you please provide more detail? A step-by-step walk-through would be just wonderful, if possible.

I just recently bought an Ainol Novo 7 Paladin tablet the cheapest one that I could find and I would really like to use it in a home automation project that I am working on. And I am starting to lose hope that I will ever get this thing to work.

It would probably be better just to use a raspberry pi as a cheap realy that would send the data via network. I just looked at the kernel driver of the pl http: I think the problem might be device initialization.

I think checking out that code could help you to get started. Simply because I have some trouble understanding how this actually works. But I just managed to find the slick usb serial library demo and I must say that the example application works great.

Could you send me firmware files usbcontroller. I have rooted my device, upgraded it to Androdid 4. I have also installed and executed the diagnostic tools for USB Host mode mentioned by Mateusz in is previous comment on June 9, Do you have any idea about what can be wrong?

Many thanks in advance. Your help is greatly appreciated since I have been struggling with this for 3 weeks…: Your best bet is to use a custom ROM Cyanogen for instance and try with that.

Samsung really sucks in that matter. They pulled that crap on all their devices but the Galaxy Nexus. Thanks for this very useful post. I have also tried with a couple of external storage devices and thumb drives but the USBManager always seems to return an empty list for connected devices.

Also, could you pls. Thanks a lot, works like a charm! Cool to hear that you were able to put everything to good use! Thanks for nice guide. Could you please port it to Arduino IDE code?

We are not using Studio, we are using Eclipse. Check out our first Tutorial in the Series to get started. Can anyone send the driver to me? BUT sending makes me real headache for quite a wile now!

Do I have to prepare the data somehow? I tried to send back the received data byte by byte but no luck and debugging between the Out-endpoint and the USB gateway is not possible.

May be you have some hints for me for further investigation of my problem? What could be a problem though, is that the gateway offers more than one set of Bulk Endpoints.

PID what the endpoint numbers exactly are and then try to address them in the code directly. In the code of the example we just take the first set of bulk endpoints, which might work for the IN endpoint, but probably the OUT ep is the wrong one.

Also for easier debugging I recommend using a PC and to run some pyusb script. Thanks for your reply. I have tried with your code as well as I have developed a very simple test program to check for and list attached USB devices but that is also not working.

I am struggling with this for a very long time. Thanks a lot in advance…. Somehow the Manifest file did not appear in my above post. Here is the Manifest file for my project. Thanks for your prompt reply.

Both these devices claim to support Android API So the code shoul;d work fine on these tablets right? Also, I have a question if as per your comment the USB Host API was stubbed out of these devices then how could my code compiled and runned without error on these?

Could you put some light to this? My guess is that some OEMs just lack the knowledge, manpower or the motivation to do the implementation of the Android Framework the right way.

Meanwhile I would liek to know is there any other way to check if the Android framework has been properly implemented on the device to support USB host API or not? Also, in case it is not properly implemented by the OEM is there any work-around to access USB devices programmatically?

We plan on using this in a quadcopter control system, where the Nexus sensors are used to stabilise the craft. Now we just need to write the control code: If so, keep in mind, that you cannot power the phone and use OTG at the same time, and power will be drawn more quickly than without USB attached.

I did have a few question though. And let it be powered by android if the phone has host mode enabled? Or should I use the ADK? And if I power my arduino from something else, do I still need the usb otg cable?

Thank you very much. For that you need to recompile your kernel and flash it onto your phone. If you run a custom ROM I am almost certain, that you will find a howto for kernel config.

Then, when OTG is activated on the kernel side, you should be able to attach a device via OTG converter and see it powered. If it is not powered, then you can still use a powered hub this is only a guess though.

Also if you are running 4. Is it possible doing the same thing in the Arduino IDE? Will your approach here work in this scenario to communicate between the phone and the peripheral?. Would you be available for a short consulting work to advice our developers on how to make this work?.

If so, please let me know, we greatly appreciate it. I have a RFID reader connected and trying to communicate with it from my android app. I need to sent this command: I was trying to do something like this:.

I see that you are doing a Bulk OUT transfer in your code. Should that not be a Interrupt OUT transfer? The second part of the code seems correct to me. I have tried out this also: But this also seems to not working properly.

Hi Manuel, i have tried developing a sample app to detect usb. Can you please help me out. I want to run PrintRun? Pronterface is a 3D printer host software written in Python and available at https: Marlin is available at https: Hi Manuel, Thanks for the code.

On linux I am able to communicate with board verified with lsusb, but when I connect with Android Tab 3. Do I need to add driver in Android tab for that, if yes can you provide steps for that.

Have you also installed the above firmware on the Arduino? That is, VID is 0x or as a decimal value. The returned HashMap by mUsbManager. Can you check if the HashMap is empty? I am using Samsung Galaxy Tablet But not able to work with other usb devices.

If I get chance to test it with another cheapest tab; I will update you, but it will takes some time. If any body tried same way with other or Samsung Galaxy Tablet I am new to electronics or i would say a learner, but i have very good experience of software development.

If you need power, then you should go with the ADK. Thank you for the quick response, I am working on a prototype and i m sorry i can not share what the idea is but just wondering that while going for production we will have to embed this ADK in our devices, wont they become so expensive?

The ADK really seems to be the best option for you. I am sure you will find some example code for firmware as well as for the Android side software. For production you would have to include the micro controller into your own hardware design.

Can you help me out? PB5 is simply defined as 5. Kind of strange that it is not defined when compiling with the Arduino IDE though. I just tried with a Samsung galaxy ii T wit Cyanogenmod 10 and works nicelly.

I had to make a few changes to make it work without problems in the Arduino IDE. I tried to use this tutorial with my arduino duemilanove and my google nexus s with 4. When I connect the arduino with my MAC it is recognized instantly.

Am I doing anything wrong or I have to do anything more than this tutorial? I just use the UsbController. Thanks for the fast response. I think that this is possible if I change the kernel.

I will search about it. Hi Manuel, Thanks for such a detailed post. Using above application I expect to see any device be listed when I try to access it through an application. Unfortunately not a single device can be found.

Under Androidx86 and various real Android tablets, everything works fine with the exact same code, but the beagleboard never let me access USB devices. I am using UsbManager class in order to enumerate the android devices connected to the same but I am unable to get the devices list.

I checked logs, its UsbDevice. Is there anything i need to change in the init. I am sorry that it seems not to work with the Beagleboard XM. Does the board get powered when you connect it? If you get an empty list of devices back then usually it means either the board is not enumerated, or the framework part of the UsbManager has not been implemented correctly.

However, we have devices with the ACM driver here as well and they seem to work. Please keep me posted on your development, since we always get requests in the comments about devices not enumerating empty list issue.

The board gets powered properly but unfortunately, the led is being very low-dimmed and moving the slider doesnt change anything, also, the enumerate-button doesnt do anything. Coincidentally I know what the problem is!

We had that too, but only sometimes. We did this for the mega, however you need to adjust the partno – p for the uno and I cannot find that one. Hope this gets you started though.

I think you will find some on ebay. Wow, awesome speed you got there! Was 99, and is now 0 Would you like this fuse to be changed back? I get something similar. Have you tried to use a powered hub?

This should prevent the board from having brownout problems. I checked again and I did not find any solution… it seems that the fuses are somehow locked … I bet it would work with an ISP.

Hello Nice and helpful article. How do i know the board arduino or any other i have works as USB host or device? Is there any other alternative way to communicate to a external USB host with out using ADk or Open accessory protocol from my android device.

Suppose I have host device connected to my android which gives me room temp every 5 min. The Arduino Due for instance enables you to connect as both Host or Device.

You should check that one out. First of all, thank you Manuel for these helpful articles and for providing a platform for like minded people. I want this board to be the main controller. It therefore needs to communicate with the USB stick.

Inside the stick is a prolific chip with 3 endpoints. Is there anyone over here who got communications with this chip working. If not, does anyone want to collaborate on implementing the soft driver for the chip?

I bet you can get the profilic to work. What you need to do is to find out what setup commands it uses. I think there is even a usb serial library that has that code snippet inside.

If not, then you need to look through the kernel driver, there it is for sure. I guess, one would have to modify the user-mode soft-driver logic to fir the FTDI serial protocol, right? I would like to know what exactly is the board arduino you used in the project.

But only for a specific product and vendor ID. I want to confirm that the above mentioned driver from the INDIServer project is indeed working great. Now I can finally start with the implementation of the rest of my z-wave server: Everything seems well but… I use a Huawei 3G modem with this tablet with no problems at all.

It means that it works as USB host properly. I have tried with an Arduino UNO rev. Please, could anyone with a C91 whether got this tablet working this issue? I implemented it and everything went smooth, even on my Arduino Duemlanove.

Thanks Manuel for your valuable helo,. Thanks for the post. Is it possible that this could work with a prolific usb-serial device? Also how would uart fit into this?

You would probably start by checking the kernel driver for those usb transfers or sniff them from your host machine you could even use wireshark. Hello, I have a problem with the connection.

I tried with Serial. Any suggestions for this problem? I will really appreciate your help. Thanks in advance Nikola. Are you able to grant your application permission for your Arduino?

Is it listed in your device list via UsbManager? For the purpose of troubleshooting I add this get method to your UsbController class: And added TextView to your main activity so I can read the listed devices on the phone, and it gets updated in the slide event listener.

Cyanogenmod will enable you to use it though almost for certain. That will be my last try. This application uses two different methods to collect information:. Anyways you had been a great help for me.

I am engineering student and this will be a part of my final project. Thank you very much, and keep up the good work. I am looking forward to get this work on my andriod tablet. Will let you know the results.

I am student and currently working on a project for my univerity. I am trying to write an app which is capable of reading date by using the TUSB http: Something like USB to serial.

But it is rather tricky to receive the information of the cc I dont know which methods I should use or which parameter are correct. So maybe you have an idea how the methods like controlTransfer etc.

Indeed if you have another USB-Serial controller the setup is always a bit tricky. I urge you to try and use wireshark while you connect the controller to your Host Machine and then check what control transfers are issued!

This is a method guaranteed to work. If you are lucky please get back to us so we can refer to your work. I got things to work very well with the Arduino Uno — so I know the Android side can work — and I can see the Vendor ID and Device ID for the TI module when I iterate devices Decimal for the vendor and decimal for the device, but things keep crashing and no data is ever exchanged as far as I can see.

I have a small doubt. This code continously sends data from the android phone to the arduino. Is there anyway i can send discreet data. For example, I want to send data byte 0x03 to the arduino only on a button press.

When i put the following code on a button press sUsbController. I think its because the buffer is overflowing as the android code is continously sending the data 0x03 to the arduino. Any way i can make the android code send the data only once?

Also be sure to always call Serial. Is there example code that I could add for sending information back to the android device? Perhaps if I were to take a few analog reads from the arduino and I want to send them to be graphed on the android?

The buffer you submitted as argument will then hold the data from the Arduino. We are using your program for our project at school and we would like to ask you for some help.

It would be very appreciated! Secondly we need to know if your program is also executable on the arduino micro board http: Currently we are using the same as you use d Arduino Uno.

Thank you so much. You can send data back by issuing a transfer to the bulk out endpoint and then you will receive the data that you are sending with Serial. The data is then stored in the buffer you transmit.

Thank you very much! Do you know if your program also works on the Arduino Micro? I am also interested in receiving data back from the Arduino.

Mini cooper up is my tablet android locked new

But i want to send data arduino to android too. If not, then register it http: Hi, I start in recovery to mount the data in USB storage, but i cant find settings. Hey Chintan, CHintan am sure there will be a reset pin-hole. Do these same steps work on all models of dopo? When I debug, it seems that Usb Device is not discovered. This will work with the Gnex.

Is there a way to debug the code? Hard reset wont work the phone just turns back on.. Techno Newbie July 21, 1:

I have the same tab. Thanks for suggestion now it is working. Help answer questions Start your very own article today. I found that there is a three way A device, B device, charger option exactly for this in the OTG standard see ref 6 in http:

See…

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Clean crossfit is tablet locked up my android miles day

Thanks for that code. A 16 digit password will be generated Keep this password handy. Could you please provide more detail? Tried all the suggestions on all the other articles. See…

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