Hello. The Mame for Ouya play very well and autodetect the PS3 PAD. All work fine but no L3 + R3. In the Ouya Pad this keys are insert coin and start game. I go to setting (push home in pad) but no way for set L3 + R3 or edit key. Solution?
Menu setting like this
I’m guessing from that menu that the Ouya version is very old. You might try using a newer Android apk instead, which should allow you to configure your gamepad buttons through the input submenu.
This screen is not from my Ouya (i find online) and today my console download the last update.
Ah, ok. In that case, you should be able to go into the input settings and disable autoconfiguration, then use the manual binds menu to map your buttons as you like.
Ok, autodetect is OFF and i go to Configure All (Retropad). Here i’ve another window (B Button (down) press Joypad) but from the pad i don’t have reaction, If i go out and i back the pad don’t work 
I need delete the config file for use again the ps3 pad.
From the Android menus (i.e., not the in-game RGUI menu), go to ‘settings’ and then the ‘input’ tab. Make sure the box under ‘configuration autodetection’ is unchecked, then scroll down some more and look for ‘player 1 custom binds’. You should be able to bind stuff there.
I’ve two menu, the first is this and work from button home and i’ve the problem for custom the pad ( autodetect is OFF and i go to Configure All (Retropad). Here i’ve another window (B Button (down) press Joypad) but from the pad i don’t have reaction, If i go out and i back the pad don’t work)
The second is this
i can go here with R2 and i can set L3 and R3 for insert coin and start game but i don’t know how i can save this configuration.