interesting but i ask now,i know can do but how (im newbie)
leonardo or uno who have better thats ?
i need 32 button interface hid interface
8 analog inbut and 16 encoder inbut.
how make hid interface to have all thats ?
ino to in arduino, what more need ?
i understand leonardo have hid ready board no need change bootloader, and uno no have hid compatiple need bootloader new write.
and hid device can adding 32 button, 16 encoder,8 analog inbut.
but how 
i need only buttons and encoders my computer.
analog can take old joystick.mean usb board if need,