RX TX

im newbie in here i know the MEGA 2560 has the 3 couple serial communication i wanna using RX2 and TX2 how can i declare or define the pins thx

If you want to use it for serial comms, Serial2.begin().

how can i declare or define the pins thx

The pins for each of the Serial ports are fixed. You cannot change them

See Arduino Serial

Nautilius:
im newbie in here i know the MEGA 2560 has the 3 couple serial communication i wanna using RX2 and TX2 how can i declare or define the pins thx

Check the documentation on the MEGA product page. There is complete pin information there.

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