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
D1 · red
RV1 · 10 kΩ
R2 · 10 kΩ
U1 · Arduino UNO
R1 · 220 Ω
D2 · green
S1 · push button
R3 · 220 Ω
U1 · Arduino UNO
RV1 · 10 kΩ
R1 · 220 Ω
D1 · red
S1 · push button
R2 · 10 kΩ
R3 · 220 Ω
D2 · green
2
2
4
4
6
6
7
7
8
8
10
10
11
11
12
12
13
13
16
16
18
18
20
20
a
a
b
b
d
d
e
e
f
f
g
g
h
h
i
i
j
j
MODEL · DC simulation
USB 45.4 mA
I 499 µA
3.01 pA
2.01 pA
0 A
24.9 pA
2.24 pA
0.87 pA
495 mV
4.99 V
4.99 V
2.49 V
686 mV
0 V
495 mV
495 mV
0 V
4.99 V
4.99 V
0 V
0 V
4.99 V
4.99 V
686 mV
686 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
R2 · 10 kΩ
R3 · 220 Ω
R1 · 220 Ω
S1 · push button
D2 · green
RV1 · 10 kΩ
D1 · red
U1 · Arduino UNO
RV1 · 10 kΩ
R1 · 220 Ω
D1 · red
S1 · push button
R2 · 10 kΩ
R3 · 220 Ω
D2 · green
2
2
4
4
6
6
7
7
8
8
10
10
11
11
12
12
13
13
16
16
18
18
20
20
a
a
b
b
d
d
e
e
f
f
g
g
h
h
i
i
j
j
MODEL · DC simulation
USB 45.4 mA
I 499 µA
3.01 pA
2.01 pA
0 A
24.9 pA
2.24 pA
0.87 pA
495 mV
4.99 V
4.99 V
2.49 V
686 mV
0 V
495 mV
495 mV
0 V
4.99 V
4.99 V
0 V
0 V
4.99 V
4.99 V
686 mV
686 mV
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