Quote Originally Posted by karenhornby View Post
Been looking through old posts, what I'd ideally like to do is "convert?" the LCD module to work as 1wire
You 'could' do that...but the LCD/PIC combo would have to be self-powered obviously.
And...you'd have to figure out a way to be able to detect a logic level change on the receiving end without a ground reference (i.e. how do you know you've got +5v if you don't know what ground is at?). And, yes, there is a relatively easy way to do this.