My SG90 Servo don't wnat to work alongside with hc-05 module using arduino

and one more problem was that later then my servo stopped working but I can hear some tik tik noise when closing my ears to it but it's not rotating at all, I tried to feed it from an external power supply but still the same.
yeah one more thing,
can anyone tell me how can I get the impedance of this servo so i can feed him the right way