['Speed'                         => [2, 'v', '%u', [  0,1,100,0]]],#speed x 100 , 16 bit vax unsigned, 0 to 65535 (655.35) m/s
  ['Voltage'                       => [1, 'C', '%u', [200,1,100,0]]],#Voltage x100, + 2V, 8 bit char unsigned, 0 (2V) to 255 (4.55V)
  ['Method'                        => undef                        ],#0 length item for using the format for other things like building human displays