MedeaWiz® Hydra™
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30 |
P a g e
Matrix and Keypad Button Wiring
Matrix wiring of the inputs allows us to use many more pushbuttons than the individual inputs
available.
We use a system of Columns and Rows. Each column and each row is assigned to an input on
the Hydra.
A pushbutton will have 2 terminals. One is connected to a column and the other to a row.
Each intersection of a column and row is a place for a pushbutton. See the example on page 32.
Since the Hydra has 10 input terminals, we can have up to a 5x5 matrix with up to 25 push
buttons.
3x4 Matrix wiring Input terminals marked on the front panel
Button number
Input Connection 1
Input Connection 2
Plays file named
1
0
3
001
2
1
3
002
3
2
3
003
4
0
4
004
5
1
4
005
6
2
4
006
7
0
5
007
8
1
5
008
9
2
5
009
10
0
6
010 (* clear key on Mode 33, 34)
11
1
6
011 ( zero on Mode 33, 34)
12
2
6
012 (# enter key Mode 33, 34)
4x4 Matrix wiring Input terminals marked on the front panel
Button number
Input Connection 1
Input Connection 2
Plays file named
1
0
4
001
2
1
4
002
3
2
4
003
4
3
4
004
5
0
5
005
6
1
5
006
7
2
5
007
8
3
5
008
9
0
6
009
10
1
6
010
11
2
6
011
12
3
6
012
13
0
7
013
14
1
7
014
15
2
7
015
16
3
7
016
