Date: 2017-11-16 01:55
The APK is signed by Google and upgrades your existing app. The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way. Rather than wait for Google to push this download to your devices, which can take days, download and install it just like any other APK.
I have also installed and executed the diagnostic tools for USB Host mode mentioned by Mateusz in is previous comment on June 9, 7567:
and the final veredict for my device has been 8775 OS support YES 8776 although the tool itsefl did not detect any device connected when I plugged my Arduino UNO board to my phone and my application does only detect USB Mass Storage devices while iterating over
If your phone is Galaxy SII then it has an MHL port and you need to buy a cable for out the links suggested by Fidelis above.
For this to work you would need a MHL cable, which is a cable that has HDMI in one end and a micro usb port on the other.
for it to 8775 activate 8776 USB Host.
So if you are keen on trying, you can root your device, use 8775 adb remount 8776 to remount the system partition and use 8775 adb push 8776 to put the file into your etc folder and try again.
6. The Arduino Due for instance enables you to connect as both Host or Device. You should check that one out.
7. If you have an external USB Host then the preferred way is to communicate using the ADK protocol. You could of course write your own implementation (turn to the source code of the Android ADB Daemon for that), however that will require a lot more effort and know-how than use the current ADK API.
With both the aforementioned firmware installed your Arduino board and the Android application installed on your phone or tablet, you will be able to control the brightness of the Arduino Uno 8767 s built-in LED with a slider on your Android device. Again, please note that this will only work with devices that actually support both USB host mode (hardware, kernel requirement) as well as the Android USB host API (Android OS requirement).
I have an Arduino 7559 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.