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U2
Manufacturer Part Number
MCP23017-E/SO
U4
Manufacturer Part Number
USB4110-GF-A
U3
Manufacturer Part Number
TPS564201DDCR
R2
Resistance
10KΩ
U1
Manufacturer Part Number
ESP32-WROOM-32
+3V3
+3V3
C4
Capacitance
0.1uF
+3V3
+3V3
C7
Capacitance
10uF
+3V3
R3
Resistance
10kΩ
R5
Resistance
5.1KΩ
R4
Resistance
4.7kΩ
A3
SDA
AIN0
ESP_IO18
ESP_IO27
SCL
ESP_IO4
ESP_IO32
ESP_IO13
A1
ESP_IO33
ESP_RX
A0
ESP_IO2
A2
ESP_IO35
ESP_IO23
ESP_IO5
ESP_IO25
ESP_IO14
ESP_IO0
ESP_TX
ESP_IO16
ESP_IO17
ESP_IO15
USB_D+
ESP_IO26
AIN1
AIN3
ESP_IO12
USB_D-
ESP_IO34
AIN2
SCL
ESP_IO19

[Example] ESP32 Reference Design