new board has atmega and a pic programmed
changed the v3 code to reflect pin changes on atmega
the pic on the expansion board is responding, and replced
the led buffers with the correct buffer chips. The PIC software
needs a few tweeks and a second board building with fewer
the i2c up to the expansion seems to be running. will need
to test with a fully wired led set.
I will finish up on Saturday with a full test and final software