Yo you can't make fun of my icons and leave the non-fixed-width table font hanging. UI guy would be disappointed. But all the prototype code was built on top of another game, so the ui and the buttons and sad trombone just came standard. I think that version could even still play SET if you got to the right menu.
The closest I got to fancy plans was making this
before I started soldering, but the gist of it is a lot like the o-lynx one phillip posted, but with different parts. The bluetooth chip is an hm-10, the serial chip is some micro 232, and I don't have a battery because I crammed it all inside the SI box and used one of the power traces on the circuit board so it turns the radio on and off with the si station. There's also a 5-pin headphone jack that works as a physical switch for the serial port wires, so you can plug in a serial cable if you need to play old school. And some bonus pins for when you need to reprogram the hm-10.
Thanks everybody, I've been having a lot of fun taking things apart lately.