spcomputing:
Good job. Only thing I can see is a nomenclature on the '2560 ICSP header the SCL should be SCK like the other SPI pins.
Thanks! And yes, it should. I corrected it. Also, since the header has the same position and pinout as the UNO, it should be green.
While I was at it, I clarified that the DC input is center positive, and called out the second ICSP socket as well.