Projector controller project

Hello all! I'm looking at making a controller for my video projector with arduino. I want it to do a few things

All of these items will be triggered by two dmx (lighting control) channels Channel 1: will control a servo drive shutter system I'm figuring on using the pwm ports for this channel 2: will send different rs232 commands based upon the level of the dmx channel (0-255) Those commands will include a rest state where no rs232 is being sent, a lamp on command, a lamp off command and a set input to x command.

Can this be done with 1 board or should I look at two different ones?

Any help and guidance getting me in the right direction would be great .