ok, so I got everything plugged in. I didn’t really understand what you meant in Note1, so I attempted to plug the CTS pin into the 3.3v pin on the TTL device. after 5 seconds of being plugged in I smelled burning (HAHAHA) so I quickly unplugged it and the USB->TTL device was hot (of course). BUT the Diavolino did appear to be functioning. I got a little LED hello from it.