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Schematic

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R3
Resistance
10kΩ
R12
Resistance
1kΩ
U7
Manufacturer Part Number
PCA9685PW,118
R14
Resistance
10kΩ
R9
Resistance
4.7kΩ
R17
Resistance
10kΩ
R11
Resistance
1kΩ
R8
Resistance
4.7kΩ
R5
Resistance
5.1KΩ
R13
Resistance
10kΩ
R4
Resistance
4.7kΩ
R6
Resistance
33.2KΩ
R16
Resistance
10kΩ
R18
Resistance
10kΩ
R7
Resistance
10kΩ
R15
Resistance
10kΩ
VUSB
VUSB
+3V3
+3V3
VIN
+3V3
C6
Capacitance
=10uF
+3V3
C4
Capacitance
0.1uF
+3V3
+3V3
C8
Capacitance
0.1uF
+3V3
+3V3
+3V3
C3
Capacitance
22uF
+3V3
+3V3
+3V3
C1
Capacitance
0.1uF
C7
Capacitance
10uF
C2
Capacitance
10uF
+3V3
+3V3
+3V3
J5
AIN0
A5
B3
ESP_IO36
A4
B5
PWM1
ESP_IO14
A0
PWM15
A3
PWM13
ESP_IO5
AIN3
ESP_IO25
PWM2
PWM5
A6
AIN1
B1
A2
J4
PWM0
PWM9
PWM10
SDA
J1
ESP_IO32
ESP_IO0
J3
ESP_TX
PWM6
R10
Resistance
10kΩ
S2
J7
USB_D-
ESP_IO13
SDA
ESP_IO33
J8
ESP_IO12
A1
B6
PWM7
AIN2
PWM11
USB_D+
ESP_IO34
DTS
USB_D-
B0
ESP_TX
A7
J2
USB_D+
ESP_IO27
AIN1
PWM12
AIN3
ESP_IO26
ESP_IO0
RST
ESP_IO39
SCL
B2
PWM3
J6
ESP_RX
USB_D-
AIN2
ESP_IO2
PWM8
SCL
B7
ESP_EN
B4
AIN0
ESP_IO35
USB_D+
ESP_EN
PWM14
PWM4
S1
U4
Manufacturer Part Number
USB4110-GF-A
U3
Manufacturer Part Number
TPS564201DDCR
U5
Manufacturer Part Number
ADS1115IDGSR
Q1
Q2
L1
Inductance
=2.2uH
U6
Manufacturer Part Number
CP2102N-A02-GQFN28

[Example] ESP32 Reference Design