Robot (sensa 3.2) (3/23/09) port assignment
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M1	=	D3 	left motor		(out = 0)
M2 	= 	D1	left motor		(out = 0)
M3 	=	D2	right motor		(out = 0)
M4	=	D0	right motor		(out = 0)
		C2	motors enable/disable	(out = 0)

		C7	sound			(out = 0)
		D4	Front bumber		(in  = 1)  (+5 = false)
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		C0	left 38khz IR LED   	(out = 0)
		D5	fire sensor	   	(in  = 1)  (+5 = false)
		C6	right 38khz IR LED	(out = 0)
		E2	38khz IR detector	(in  = 1)  (+5 = false)

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