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C10
Capacitance
0.1uF
C12
Capacitance
0.1uF
+3V3
+3V3
R8
Resistance
10kΩ
+3V3
BOOT
RS485_TX
RS485_EN
GPIO21
GPIO34
GPIO25
GPIO22
GPIO35
GPIO33
RS485_RX
GPIO26
GPIO32
GPIO23
ESP_IO0
GPIO27
IC3

ESP32 RS485 (Modbus) Controller Module