title: Arduino Mega Multi Serial String
body: <p>I've tried to find an answer in other places, but without success.. I hope here can someone can help me..</p>
  
  <p>I'll try to simplify my question as I can:
  Well.. <strong>Is it possible to compound a string from multiple UARTs, than send that over another ?</strong></p>
  
  <p>I use Serial2 to comunicate with an Attiny, and Serial1 is wired to a Bluetooth module.</p>
  
  <p>Is there any chances to  wait for data from attiny, add the received data to the string and then pass it over bluetooth ?</p>
  
  <p>Something like this Attiny => Attiny + Arduino Mega Results ~> bluetooth ?</p>