Key_Matrix_v1.pdf

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Schematic Prints
JP1
JP3
JP5
VCC
PB7
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
PB6
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
PD5
PC0
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
PB5
PB5
PB4
PC1
PC2
PC3
PC4
PC5
PC6
PC7
R1
10k
PC0
PB3
PB2
PB1
PB0
R2
10k
PC1
GND
GND
R3
10k
PC2
PC3
R4
10k
PD4
PC0
PB4
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC4
R5
10k
R6
10k
VCC
VCC
PC5
PC6
R7
10k
PC7
PC6
PC3
PC2
R8
10k
PC7
PC1
PC0
PC4
PC5
PC6
PC7
PB3
PC0
PC1
PC2
PC3
PB3
PD7
PD5
PD3
PD6
PD4
JP2
JP4
JP6
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
PD7
PC0
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
PB2
PC0
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
PB7
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PD6
PC0
PB1
PC0
PB6
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC4
PC5
PC6
PC7
PB0
PC0
PC1
PC2
PC3
PB0
Key Matrix
Copyright (C) 2005 Mindaugas Milasauskas, mindaug@mindaugas.com
http://www.mindaugas.com
Version 1
PC5
PC4
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Key Matrix version 1
Parts List
Description
Designator
Quantity
Value
High Conductance Fast Diode1N4148
D1-D96
96
20x2 Header and Connector, 40-Pin, Dual row
JP1-JP6
6
Resistor
R1-R8
8 10k
177351255.022.png
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177351255.027.png 177351255.028.png 177351255.029.png 177351255.030.png
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