SCL
SDA
AREF
GND
13
12
~11
~10
~9
8
7
~6
~5
4
~3
2
1
0
IOREF
RESET
3.3V
5V
GND
GND
VIN
A0
A1
A2
A3
A4
A5
DIGITAL (PWM ~)
POWER
ANALOG IN
UNO
CH340G
ATMEGA328P
−
−
+
+
−
−
+
+
1
1
5
5
10
10
15
15
20
20
25
25
30
30
j
j
i
i
h
h
g
g
f
f
e
e
d
d
c
c
b
b
a
a
2N3904
S
−
KY-008
R2 · 1 kΩ
LDR1 · GL5528
U1 · Arduino UNO
Q1 · 2N3904
LS1 · KY-008
R1 · 10 kΩ
U1 · Arduino UNO
R2 · 1 kΩ
Q1 · 2N3904
LS1 · KY-008
LDR1 · GL5528
R1 · 10 kΩ
2
2
3
3
5
5
6
6
7
7
8
8
9
9
10
10
12
12
16
16
17
17
18
18
a
a
b
b
c
c
d
d
e
e
f
f
g
g
h
h
i
i
j
j
MODEL · DC simulation
USB 76.3 mA
4.06 mA
Ic 27 mA
27 mA
491 µA
491 µA
4.81 V
4.98 V
0 V
4.91 V
4.81 V
759 mV
3.11 mV
759 mV
66.8 mV
4.98 V
34.1 mV
68.1 mV
4.91 V
4.91 V
1.55 mV
−
−
+
+
−
−
+
+
1
1
5
5
10
10
15
15
20
20
25
25
30
30
j
j
i
i
h
h
g
g
f
f
e
e
d
d
c
c
b
b
a
a
SCL
SDA
AREF
GND
13
12
~11
~10
~9
8
7
~6
~5
4
~3
2
1
0
IOREF
RESET
3.3V
5V
GND
GND
VIN
A0
A1
A2
A3
A4
A5
DIGITAL (PWM ~)
POWER
ANALOG IN
UNO
ATMEGA328P
CH340G
U1 · Arduino UNO
R1 · 10 kΩ
LDR1 · GL5528
Q1 · 2N3904
LS1 · KY-008
R2 · 1 kΩ
U1 · Arduino UNO
R2 · 1 kΩ
Q1 · 2N3904
LS1 · KY-008
LDR1 · GL5528
R1 · 10 kΩ
2
2
3
3
5
5
6
6
7
7
8
8
9
9
10
10
12
12
16
16
17
17
18
18
a
a
b
b
c
c
d
d
e
e
f
f
g
g
h
h
i
i
j
j
MODEL · DC simulation
USB 76.3 mA
4.06 mA
Ic 27 mA
27 mA
491 µA
491 µA
4.81 V
4.98 V
0 V
4.91 V
4.81 V
759 mV
3.11 mV
759 mV
66.8 mV
4.98 V
34.1 mV
68.1 mV
4.91 V
4.91 V
1.55 mV
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