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Schematic

Layout

3D View

R12
Resistance
1kΩ
R14
Resistance
10kΩ
R9
Resistance
4.7kΩ
PWM1
PWM15
PWM13
PWM2
R11
Resistance
1kΩ
PWM5
PWM0
PWM9
PWM10
R8
Resistance
4.7kΩ
PWM6
USB_D-
R13
Resistance
10kΩ
SDA
PWM7
PWM11
USB_D+
DTS
USB_D-
ESP_TX
R6
Resistance
33.2KΩ
PWM12
ESP_IO0
RST
SCL
PWM3
ESP_RX
R7
Resistance
10kΩ
PWM8
ESP_EN
USB_D+
PWM14
PWM4
L1
Inductance
=2.2uH
U5
Manufacturer Part Number
ADS1115IDGSR
Q1
Q2
U7
Manufacturer Part Number
PCA9685PW,118
VUSB
VUSB
+3V3
+3V3
+3V3
C6
Capacitance
=10uF
R10
Resistance
10kΩ
+3V3
C8
Capacitance
0.1uF
+3V3
C3
Capacitance
22uF
+3V3
+3V3
+3V3
C1
Capacitance
0.1uF
U6
Manufacturer Part Number
CP2102N-A02-GQFN28
C2
Capacitance
10uF
+3V3
U4
Manufacturer Part Number
USB4110-GF-A

[Example] ESP32 Reference Design