I connected my 3DR Radio V1,1 to my cellphone using a femal usb to fembal usb between my radio usb, and the my cellphone data/ charging cable (with a USB 2.0 on one side and a USB micro.
But my cellphone won't detect my radio. It doesn't even turn on the LEDs. What do I do?
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I will note the short cable that came with my 3DR radios will only work with the blue end (90 degree) plugged into my Motorola Maxx HD. The phone is rooted so has the usb host check. I don't know if non-rooted Motorola phones are compatible.
On my Kindle Fire (2nd gen), it is installed with N2A OS making it 100% android which also works without problems. In lieu of buying the N2A OS, one can install Cyanogenmod OS which is open source Android, but more work. http://wiki.cyanogenmod.org/w/Devices ; However, if the bootloader is locked you're out of luck
It really is irritating how companies prevent modding their firmware.
I also use a micro usb extension cable allowing better placement of the radio.
I'll buy an OTG cable and report back. I have a nexus 5. I should work...
People are correct to point you to the OTG cable.
Pin 4 of the micro side has to be grounded for it to be detected... that is why the OTG cable is a MUST!
A simple patch-cable/adapter/gender-changer/spliced wire will not work.
You still will need an USB OTG cable OTG cable as Chris said............
I have phones and tablets, but only works with USB OTG
so if your phone is supported but you don't have OTG cable it will NOT work
You need a special OTG cable.
And your phone should suport USB OTG.