CIRCUIT
Circuit - PCB Design
Ground (GND) Copper Area On Back of PCB
J1
Q1-4
U2
U1
U3
U4
SW1
R1-4
R5
RV1
R6
R7-14
SW2
U5
D1
C1
R15
R16
R17
R18
D2
D3
D4
74HC595
U6
74HC595
C2
R19
S
W
2
PO
T
S
W
1
S
W
2
PO
T
S
W
1
L
A
T
CL
K
SE
R
O
E
L
A
T
CL
K
SE
R
Qh
’
L
A
T
CL
K
SE
R
Qh
’
GND
VCC
VCC
GND
DIGITISER