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D2
R1
Resistance
Resistance
Resistance
10kΩ
J1
R6
Resistance
10 Ω
R2
Resistance
Resistance
Resistance
5.1kΩ
C9
Capacitance
10uF
RST
R5
Resistance
10 Ω
USB1
R4
Resistance
1kΩ
J2
R3
Resistance
Resistance
Resistance
5.1kΩ
R7
Resistance
10 Ω
C5
Capacitance
10uF
R8
Resistance
10kΩ
BOOT
R9
Resistance
10kΩ
D1
C4
Capacitance
10uF
C3
Capacitance
10uF
C11
Capacitance
0.1uF
C8
Capacitance
10uF
PWR
C6
Capacitance
0.1uF
Q1
U2
TERM
C10
Capacitance
0.1uF
C2
Capacitance
0.1uF
C1
Capacitance
0.1uF
IC3
C12
Capacitance
0.1uF
Q2
U1
IC1
A RS485 B
D3

ESP32 RS485 (Modbus) Controller Reference Design