3.  Are you aware of anyone who has already developed a carrier board that will hold hold two Balloon3's?
 
I don’t think anyone has done this yet but of course you are welcome to contribute a design for one. I know others are keen to use multiple Balloons linked together,
how do you see the two boards communicating?
 
This was the very reason I was hoping someone else had already done this....
 
Does anyone have suggestions for a solution to the communications issue?
 
Dan