Ah, this is simple - Renoise/Duplex is sending messages, and they are being received by the iPad.
But the messages sent by the iPad are not received by Renoise
Check the TouchOSC settings - you need to enter the IP address (or hostname, in some cases) of your computer in the field named “Host”
How you determine your IP address depends on your operation system (here’s a link - note that you need to know the internal address, not the web one)
Thanx for your help, it´s now working ! I did well entered my ip address since the begining , but i didn’t see that i had activated osc server and when i descativated it everything worked.
I still have a last question , the ‘lock’ button of hydra , xy pad and repeater blink everytime and i can’t use it, it doesn’t work. Do you Know what happens ? In my dupplex browser these buttons are displaying a heart and blink too…i don’t Know why i can’t use them
It means they have no device to control - they are homeless, so to speak. If you had one or more XYPad/Repeater/Hydra devices in your song, you’d be able to target them using prev/next buttons, and press “lock” to take control.
Please check out the documentation for each application
http://forum.renoise…8-duplex-xypad/
http://forum.renoise…uplex-repeater/
ok i understand. Thank you very much for your support.
omg omg omg omg omg omg hoooooooowwww did i not know about this?!?!? ILU ILU MUAH MUAH <3 <3 <3 <3 
JOY JOY JOY JOY YEEEEEEEEEEHAAAAAAAAA
:::starts humping nearest leg:::
OSCPad has custom layouts for android (and sort-of loads touchOSC layouts) but I don’t have an android device at the moment so can’t confirm it.
This is cool. wants me to get an ipad <3<3
edit: derp. Nevermind, got it fixed and it works great. Awesome!!