Schematic of [Example] ESP32 Reference Design
U4
Manufacturer Part Number
USB4110-GF-A
R3
Resistance
10kΩ
A3
SDA
AIN0
ESP_IO27
B1
SCL
A6
ESP_IO32
ESP_CMD
A1
ESP_IO33
A7
A0
B2
A2
B7
SDA
ESP_IO35
R8
Resistance
4.7kΩ
R5
Resistance
5.1KΩ
SDA
ESP_IO23
USB_D-
B6
SCL
ESP_IO25
ESP_CLK
U5
Manufacturer Part Number
ADS1115IDGSR
USB_D+
R4
Resistance
4.7kΩ
ESP_SD3
USB_D+
ESP_IO26
AIN1
AIN3
B3
ESP_SD2
B0
USB_D-
ESP_SD1
ESP_IO34
A5
AIN2
A4
SCL
B4
ESP_IO19
B5
+3V3
+3V3
+3V3
+3V3
+3V3
+3V3
+3V3
+3V3
C6
Capacitance
=10uF
U2
Manufacturer Part Number
MCP23017-E/SO
TP5
C4
Capacitance
0.1uF
R10
Resistance
10kΩ
C8
Capacitance
0.1uF
TP4
TP3
TP6
C2
Capacitance
10uF