User manual

Board ID setting (SW1)
ID3 ID2 ID1 ID0 Board ID
1 1 1 1 0
1 1 1 0 1
1 1 0 1 2
1 1 0 0 3
1 0 1 1 4
1 0 1 0 5
1 0 0 1 6
1 0 0 0 7
0 1 1 1 8
0 1 1 0 9
0 1 0 1 10
0 1 0 0 11
0 0 1 1 12
0 0 1 0 13
0 0 0 1 14
0 0 0 0 15
Note: On: 1, Off: 0
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