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Files

Schematic

Layout

3D View

U3
Manufacturer Part Number
PC817C
U1
Manufacturer Part Number
PC817C
U4
Manufacturer Part Number
PC817C
U2
Manufacturer Part Number
PC817C
D2
R3
Resistance
1KΩ
J6
R1
Resistance
1KΩ
J2
R5
Resistance
220 Ω
J4
D1
R4
Resistance
1KΩ
D3
R2
Resistance
1KΩ
D4
U1
Manufacturer Part Number
ARDUINO_NANO
J2
J3
K1
Manufacturer Part Number
SRD-S-112D
K4
Manufacturer Part Number
SRD-S-112D
K3
Manufacturer Part Number
SRD-S-112D
Q2
J5
Q3
Q1
BZ1
K2
Manufacturer Part Number
SRD-S-112D
Q4
LCD1
Manufacturer Part Number
WC1602A
RV1
Resistance
Resistance

Arduino LCD timer