Hello,
Why 2 uC? You have 6 ADC inputs to use, and you can multiplex 2 LCDs by using one spare pin to connect the 'E' entry from the second LCD.
If you really want to have 2 uCs for whatever reason, I'd suggest to do a board with 1 uC+ 1 LCD and just build 2 of them.. That way you can go higher or lower in the future.
the application calls for a display for each solar unit. it is an advertising board.
however, you raise a good point. i am getting 5 boards made (the minimum) and its about $40. with a waste of 4 units. however, if i split it up. i am using 2/5. dont know why i didnt think of that, haha.
thanks.