Really I just wanted to play with these things. And what is easier than sensing and recording temperature? So that's what I did. I had a HC-05 BT module setting around so I decided to use that for communication as it will work with 3.3v just fine and I would not have to keep hooking up my USB / TTL converter up to modify the lua files.
Please if you have any comments / suggestions on the circut or code feel free to lemme know.