Here is a list of things that are different on Macchina 1.1:
- Removed SPI jumper scheme and moved ICSP header to same place as Mega 2560.
- Added Stuff option for CAN isolation
- Improved J1850 circuit
- added ability for ISO interface to be either hardware or software serial depending on jumper selection
- cooler Matte color PCB
- changed to 8 pin pluggable header instead of 2 headers
- thru-hole USB connector for durability