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D2
GPIO36
CC1
ESP_TX
CC2
ESP_IO0
USBDN
USBDP
USBDN
ESP_RX
USBDN
USBDP
CC2
GPIO39
ESP_EN
ESP_EN
USBDP
D1
C4
Capacitance
10uF
VBUS
R1
Resistance
Resistance
Resistance
10kΩ
+3V3
PWR
R2
Resistance
Resistance
Resistance
5.1kΩ
+3V3
C9
Capacitance
10uF
R4
Resistance
1kΩ
R3
Resistance
Resistance
Resistance
5.1kΩ
+5V
C5
Capacitance
10uF
C2
Capacitance
0.1uF
C1
Capacitance
0.1uF
VBUS
+5V
+3V3
+3V3
+3V3
USB1
Q1
Q2
U1
IC1

ESP32 RS485 (Modbus) Controller Reference Design vbne