sorry, was at work, attention was not 100% with my writing.
I meant 'block power', as LEDs only allow a current one way.
So you could make the file something like this then, and it would turn off at level 0?:
Code:
level 0 - device 0 level 10 - device 11 level 20 - device 147
level 1 - device 1 level 11 - device 17 level 21 - device 170
level 2 - device 2 level 12 - device 25 level 22 - device 195
level 3 - device 3 level 13 - device 35 level 23 - device 225
level 4 - device 4 level 14 - device 47 level 24 - device 255
level 5 - device 5 level 15 - device 60
level 6 - device 6 level 16 - device 75
level 7 - device 7 level 17 - device 89
level 8 - device 8 level 18 - device 105
level 9 - device 9 level 19 - device 125