Hello power7net,
I've just received a HC-07 breakout board. In your picture I see that you didn't use a voltage divider for the RX line of the HC-07 so you drive it with 5V...right? This device does not seem to be 5V tolerant, and it is written on the back of that board to use 3.3V for RX line. So, I'm just wondering, did you have any problems running it as pictured ?
I'm unsure if I should bother using a voltage divider or something. I don't find many infos about those modules.