I seem to be missing something.
You are. Documentation. Work keeps getting in the way.
Try this...
• With the TinyISP sketch loaded in the Arduino IDE, switch to the[font=Courier New] _TinyISP_BuildOptions.h [/font]tab
# (sadly, it ended up the last tab)
• Add this line below the[font=Courier New] Put build options here [/font]comment...
[font=Courier New]#define RELAY_KNOCK_BANG_ENABLED 1[/font]
• Upload the modified sketch (don't forget to remove the auto-reset disable capacitor)
# Or, with the Arduino IDE
not running use an external editor to modify the file.