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


ESP32 RS485 (Modbus) Controller Module tJmB

ESP32 RS485 (Modbus) Controller Module tJmB thumbnail
This project is a controller module that uses the ESP32-WROOM-32E and the MAX3485 to communicate with Modbus devices. It has a USB-C port for power and data, a voltage regulator for stable operation. It also has a CH340C chip for USB to serial conversion. #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #reusable #module #simple-embedded #espressif #template #MAX3485 #RS485 #maximintegrated

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