OTG mode

[gtranche]

This is really awesome !
Juste an info to add for RPI zero
don't forget to activate the OTG on the RPI
echo "dtoverlay=dwc2" | sudo tee -a /boot/config.txt
echo "dwc2" | sudo tee -a /etc/modules

and reboot
without this module I cannot launch the recovery_menu

Another information, without a gamepad on the wiiu you only have a black screen on tv. I had to disabled CBHC in blind mode.