Connecting an Arduino Mini Pro 3.3V/8MHz with an Arduino UNO 5V/16MHz

Hi, I would like to know if is there any problem about using an arduino with a clock frecuency of 8MHz, and sending/receiving data to/from another Arduino at 16 MHz. I just want to establish a simple Serial connection between them.

Thanks for your answers.

The board profiles in the Arduino IDE will automatically manage the clocks for you, just make sure to change the board setting.

You will probably want a voltage divider on the 5V side's transmit (TX) to bring it down to 3.3V, but the 3.3V TX side is enough to drive the 5V side's receive (RX)

Thanks for your prompt answer.

What if I try to connect them wirelessly using an transceiver like Nrf24L011? Does the different clocks frequency affect the data?

Thank you again.

kevinjaire:
What if I try to connect them wirelessly using an transceiver like Nrf24L011? Does the different clocks frequency affect the data?

That will be no problem the communication is completely managed by the nRF24.

...R
Simple nRF24L01+ Tutorial

Thanks a lot.