Schematic

1
1
2
2
3
3
4
4
D D
C C
B B
A A
D2
1N4148
IN_CH1
1
2
3
P1
Header 3H
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
Raspi-Connect1
Header 20X2
3.3V 5.0V
3.3V
GND
GND
GND
GND
GND
GND
GND
1 2
3
4
5
K1
Relay
IN_CH1
IN_CH2
IN_CH3
P25 P28
P29
P25
P28
P29
aveshare
W
GND
1 2
3 4
5 6
8
10
12
14
16
18
20
WPiBCM
7
9
11
13
15
17
19
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
2
3
4
17
27
22
9
10
11
0
5
6
13
19
26
WPiBCM
7
8
9
0
12
2
3
13
14
30
21
22
23
24
25
14
15
18
23
24
25
7
8
1
12
16
20
21
15
16
1
4
5
6
10
11
31
26
27
28
29
3.3V
P_SDA
P_SCL
P7
GND
GND
GND
GND
GND
GND
GND
GND
P0
P_MOSI
P2
P3
3.3V
P_MISO
P_SCK
ID_SD
P21
P22
P23
P24 P27
P26
ID_SC
P_CE1
P_CE0
P6
P5
P1
P_RX
P_TX
LED1
VCC5.0 5.0V
10uF
C1
104
C2
PWR
1K
R2
D1
SS54
1
3
5
2
4
6
JMP
Header 3X2
P4
VCC5.0
1
2 3
4
U1
PC817
D3
1N4148
1K
R1
3.3V
GND
GND
Q1
S8050
1K
R4
GND
VCC5.0
10K
R3
IN_CH2
1
2
3
P2
Header 3H
1 2
3
4
5
K2
Relay
LED2
VCC5.0
1
2 3
4
U2
PC817
D4
1N4148
1K
R5
3.3V
Q2
S8050
1K
R7
GND
VCC5.0
10K
R6
IN_CH3
1
2
3
P3
Header 3H
1 2
3
4
5
K3
Relay
LED3
VCC5.0
1
2 3
4
U3
PC817
D5
1N4148
1K
R8
3.3V
Q3
S8050
1K
R10
GND
VCC5.0
10K
R9
L1
RPi Relay Board

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