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Schematic

Layout

3D View

GPIO13
GPIO35
R1
Resistance
Resistance
Resistance
10kΩ
+3V3
GPIO26
GPIO34
R6
Resistance
10 Ω
R2
Resistance
Resistance
Resistance
5.1kΩ
ESP_EN
R5
Resistance
10 Ω
R4
Resistance
1kΩ
GPIO33
GPIO32
R3
Resistance
Resistance
Resistance
5.1kΩ
GPIO12
GPIO36
GPIO25
R7
Resistance
10 Ω
R8
Resistance
10kΩ
GND
GPIO14
+5V
R9
Resistance
10kΩ
GPIO27
GPIO39
D1
C4
Capacitance
10uF
C11
Capacitance
0.1uF
C8
Capacitance
10uF
PWR
C9
Capacitance
10uF
RST
C6
Capacitance
0.1uF
TERM
C5
Capacitance
10uF
C10
Capacitance
0.1uF
IC3
C12
Capacitance
0.1uF
BOOT
Q1
U2
Q2
U1
IC1
A RS485 B
D3

ESP32 RS485 (Modbus) Controller Module tJmB