Thanks a lot - now all 20 buttons “do something” in vvvv. But as some controllers share the same “bit groups” (don’t know the correct term), the values add up when pressed simultaneously. For example pressing one button makes the third bit-group go “32”, another button makes it go “1” - pressing both buttons at the same results in “33”. As the buzz controller consists of 4 individual controllers (for 4 players) connected to one usb plug, it is quite likely that two buttons are pressed at the same time. In that case an identification of the buttons wouldn’t be possible (at least not for me ;-)).
I don’t know if i made it clear - in short, i can’t manage to identify the buttons correctly when some of them are pressed at the same time. It wouldn’t be too bad, I think, but if there was a way to solve this problem, it would be really cool!