I have one xbee Serie 2 to connect in one arduino pro mini 5v, for this i have one Breakout Board for XBee Module:
My problem is the 5V, i know the xbee only accept 3.3V, can i use a voltage regulator between 5v in arduino to vcc in my xbee?can i have problems with RX/TX Pins?
I know i can use a Voltage Regulator - 3.3V to power the xbee, what i don´t know is if i can use normaly the pin comunucation RX/TX directly?
You can use a voltage divider (or a pair of diodes in series) to reduce the 5V TX to 3.3V.
The 3.3V RX is more than 60% of the 5V power level, so that is enough to allow the RX pin on the Arduino to distinguish HIGH/LOW in the signal, so receiving shouldn't be a problem.