Krodal:
[quote author=Nick Gammon link=topic=104708.msg785538#msg785538 date=1336351670]I recently made a sketch that detects your current board and fuses
So did I, but to detect the Arduino's own fuse and signature: Arduino Playground - HomePage (use command 'i')
[/quote]
This is a nice bit of kit. Consider this swiped for my collection.