RS485_B
RS485_TX
RS485_EN
RS485_TX
GPIO21
GPIO34
RS485_B
GPIO25
GPIO27
GPIO22
RS485_A
ESP_IO0
GPIO35
GPIO16
GPIO33
GPIO12
RS485_RX
GPIO15
RS485_RX
GPIO26
GPIO13
GPIO2
RS485_A
GPIO32
GPIO14
GPIO23
ESP_IO0
GPIO27
GPIO17
+3V3
C11
Capacitance
0.1uF
+5V
R6
Resistance
10 Ω
R5
Resistance
10 Ω
+3V3
R7
Resistance
10 Ω
C10
Capacitance
0.1uF
C12
Capacitance
0.1uF
R8
Resistance
10kΩ
+3V3
R9
Resistance
10kΩ
BOOT
U2
TERM
IC3
A RS485 B
D3