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Files

Schematic

Layout

3D View

U1
D3
IC3
IC1
U2
TERM
A RS485 B
+3V3
VBUS
+3V3
R1
Resistance
Resistance
Resistance
10kΩ
+3V3
J1
PWR
+5V
R6
Resistance
10 Ω
R2
Resistance
Resistance
Resistance
5.1kΩ
+3V3
C9
Capacitance
10uF
R5
Resistance
10 Ω
R4
Resistance
1kΩ
J2
R3
Resistance
Resistance
Resistance
5.1kΩ
+5V
+3V3
R7
Resistance
10 Ω
C5
Capacitance
10uF
+3V3
VBUS
+5V
+3V3
R8
Resistance
10kΩ
+3V3
+3V3
R9
Resistance
10kΩ
+3V3
+3V3
ESP_RX
GPIO36
D1
ESP_RX
CC1
ESP_TX
RS485_B
USBDP
RS485_TX
RS485_EN
RS485_TX
USBDN
GPIO15
GPIO14
ESP_TX
GPIO21
USBDP
GPIO34
GPIO34
RS485_B
GPIO25
CC2
GPIO27
ESP_IO0
GPIO25
USBDN
RST
ESP_IO0
GPIO22
USB1
GPIO16
RS485_A
Q1
GPIO5
ESP_IO0
CC1
USBDP
GPIO13
GPIO17
GPIO12
RS485_EN
GPIO35
GPIO16
GPIO33
GPIO12
RS485_RX
USBDN
ESP_RX
GPIO33
GPIO36
GPIO32
GPIO15
USBDN
ESP_EN
USBDP
GPIO2
RS485_RX
GPIO26
GPIO13
GPIO22
CC2
GPIO2
GPIO39
GPIO26
RS485_A
GPIO39
USBDN
GPIO32
ESP_EN
GPIO14
GPIO21
ESP_TX
BOOT
ESP_EN
GPIO23
GPIO23
Q2
ESP_IO0
GPIO5
GPIO27
ESP_EN
GPIO17
USBDP
GPIO35
D2
C4
Capacitance
10uF
C3
Capacitance
10uF
C11
Capacitance
0.1uF
C8
Capacitance
10uF
C6
Capacitance
0.1uF
C10
Capacitance
0.1uF
C2
Capacitance
0.1uF
C1
Capacitance
0.1uF
C12
Capacitance
0.1uF

ESP32 RS485 (Modbus) Controller Reference Design vbne