U2: ULN2803
image/svg+xml
Left edge
Left edge
Bottom edge
Bottom edge
Top edge
Top edge
Right edge
Right edge
= track separated beneath
= track separated beneath
= component inserted into this hole
= component inserted into this hole
= link/jumper
= link/jumper
= connector
= connector
R3
+
= connector
= connector
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
M
M
N
N
O
O
A
P
B
Q
C
R
D
S
E
T
F
U
G
V
U1: PIC16F628
U1: PIC16F628
J1
J1
J2
J2
J3
J5
J4
J6
J5
J7
R4
R2
U2: SN7554410
J5
J3
R3
R4
R4
R3
J4
J4
R3
R5
R3
+
R3
T1
R3
R1
R3
C1