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Schematic

Layout

3D View

A3
SDA
AIN0
ESP_IO18
ESP_IO27
SCL
A6
ESP_IO4
ESP_IO32
ESP_IO13
A1
ESP_IO33
ESP_RX
A7
A0
ESP_IO2
A2
SDA
ESP_IO35
ESP_IO23
USB_D-
ESP_IO5
ESP_IO25
ESP_IO14
ESP_IO0
ESP_TX
USB_D+
ESP_IO16
DTS
USB_D-
ESP_IO17
ESP_IO15
USB_D+
ESP_IO26
AIN1
AIN3
RST
SCL
ESP_IO12
USB_D-
ESP_IO34
A5
AIN2
A4
SCL
ESP_IO19
USB_D+
R3
Resistance
10kΩ
U7
R9
Resistance
4.7kΩ
R8
Resistance
4.7kΩ
R5
Resistance
5.1KΩ
R4
Resistance
4.7kΩ
R6
Resistance
33.2KΩ
R7
Resistance
10kΩ
VUSB
+3V3
VUSB
+3V3
C6
Capacitance
=10uF
+3V3
C4
Capacitance
0.1uF
+3V3
+3V3
C8
Capacitance
0.1uF
+3V3
C3
Capacitance
22uF
+3V3
+3V3
+3V3
C1
Capacitance
0.1uF
C7
Capacitance
10uF
C2
Capacitance
10uF
+3V3
+3V3
R10
Resistance
10kΩ
U5
R2
Resistance
10KΩ
U4
U3

[Example] ESP32 Reference Design