Any users of this?
I would like to know 2 things:
1) The dimensions of the board itself (not counting the pins header). I have a HC-07 and the board of the HC-05 looks a little longer and I need to know how much longer.
2) How to connect and use the STATE and KEY pins? On my HC-07 there is only 4 pins but theere are holes for those 2 pins and they are connected to the BT board, I tried to connect the STATE to an arduino input and read it, but it always read 0, connected or disconnected. Must I use a pullup or pulldown resistor? Or is it just that the HC-
0507 doesn't use these pins at all?