Pro mini and HC 05 interfacing issue

My HC 05 bluetooth is working when I tried it with FTDI breakout board but it throws COM error when I'm trying it with Pro mini. I have double checked the connections and also tried using resistors to give 3.3V supply to HC 05.
Any suggestions?

If you want answers from us you have to provide us with some info... During summer our crystal balls are a bit cloudy...

Aka, let us check the connections and code for example :wink: Please NO Fritzing breadboard mess.