Midi controllers

Hello guys i was wondering, ive got 2 working arduino midi controllers, im using Serial - MIDI Converter: v2d to convert the serial data to midi on one of the controllers do you no of any way of getting the 2 separate arduino boards to send serial data to Serial - MIDI Converter: v2d?

Not sure I fully understand what you are saying, but if you have 2 arduino then that is why there is a midi thru connector concept.