−
−
+
+
−
−
GND
+
+
1
1
5
5
10
10
15
15
20
20
25
25
30
30
35
35
40
40
45
45
50
50
55
55
60
60
j
j
i
i
h
h
g
g
f
f
e
e
d
d
c
c
b
b
a
a
EN
VP
VN
D34
D35
D32
D33
D25
D26
D27
D14
D12
D13
GND
VIN
3V3
GND
D15
D2
D4
RX2
TX2
D5
D18
D19
D21
RX0
TX0
D22
D23
ESP32
WROOM-32
CP2102
U1 · ESP32 DevKit
D1 · red
R1 · 220 Ω
U1 · ESP32 DevKit
R1 · 220 Ω
D1 · red
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
18
18
19
19
24
24
25
25
27
27
a
a
b
b
c
c
j
j
GND
MODEL · DC simulation
USB 51.7 mA
6.7 mA
6.7 mA
3.3 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
3.19 V
0 V
4.99 V
3.3 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
1.71 V
0 V
0 V
−
−
+
+
−
−
GND
+
+
1
1
5
5
10
10
15
15
20
20
25
25
30
30
35
35
40
40
45
45
50
50
55
55
60
60
j
j
i
i
h
h
g
g
f
f
e
e
d
d
c
c
b
b
a
a
EN
VP
VN
D34
D35
D32
D33
D25
D26
D27
D14
D12
D13
GND
VIN
3V3
GND
D15
D2
D4
RX2
TX2
D5
D18
D19
D21
RX0
TX0
D22
D23
CP2102
ESP32
WROOM-32
D1 · red
R1 · 220 Ω
U1 · ESP32 DevKit
U1 · ESP32 DevKit
R1 · 220 Ω
D1 · red
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
18
18
19
19
24
24
25
25
27
27
a
a
b
b
c
c
j
j
GND
MODEL · DC simulation
USB 51.7 mA
6.7 mA
6.7 mA
3.3 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
3.19 V
0 V
4.99 V
3.3 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
1.71 V
0 V
0 V
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