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D2
ESP_RX
GPIO36
ESP_RX
CC1
ESP_TX
RS485_B
USBDP
RS485_TX
RS485_EN
RS485_TX
USBDN
GPIO15
GPIO14
ESP_TX
GPIO21
USBDP
GPIO34
GPIO34
RS485_B
GPIO25
CC2
GPIO27
ESP_IO0
GPIO25
USBDN
ESP_IO0
GPIO22
GPIO16
RS485_A
GPIO5
ESP_IO0
CC1
USBDP
GPIO13
GPIO17
GPIO12
RS485_EN
GPIO35
GPIO16
GPIO33
GPIO12
RS485_RX
USBDN
ESP_RX
GPIO33
GPIO36
GPIO32
GPIO15
USBDN
ESP_EN
USBDP
GPIO2
RS485_RX
GPIO26
GPIO13
GPIO22
CC2
GPIO2
GPIO39
GPIO26
RS485_A
GPIO39
USBDN
GPIO32
ESP_EN
GPIO14
GPIO21
ESP_TX
ESP_EN
GPIO23
GPIO23
ESP_IO0
GPIO5
GPIO27
ESP_EN
GPIO17
USBDP
GPIO35
D1
C4
Capacitance
10uF
+3V3
C3
Capacitance
10uF
VBUS
+3V3
C11
Capacitance
0.1uF
+3V3
C8
Capacitance
10uF
+5V
+3V3
C6
Capacitance
0.1uF
+5V
+3V3
C10
Capacitance
0.1uF
+3V3
C2
Capacitance
0.1uF
C1
Capacitance
0.1uF
VBUS
+5V
C12
Capacitance
0.1uF
+3V3
+3V3
+3V3
+3V3
+3V3
R1
Resistance
Resistance
Resistance
10kΩ
J1
R6
Resistance
10 Ω
R2
Resistance
Resistance
Resistance
5.1kΩ
R5
Resistance
10 Ω
R4
Resistance
1kΩ
J2
R3
Resistance
Resistance
Resistance
5.1kΩ
R7
Resistance
10 Ω
R8
Resistance
10kΩ
R9
Resistance
10kΩ
PWR
C9
Capacitance
10uF
RST
USB1
Q1
C5
Capacitance
10uF
BOOT
Q2
U2
TERM
IC3
U1
IC1
A RS485 B
D3

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Documents

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    Assets

    ESP32 RS485 (Modbus) Controller Reference Design-removebg-preview.png

    ESP32 RS485 (Modbus) Controller Reference Design-removebg-preview.png

    ESP32 RS485 (Modbus) Controller Reference Design-removebg-previewThumbnail

    ESP32 RS485 (Modbus) Controller Reference Design

    ESP32 RS485 (Modbus) Controller Reference Design 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, and headers for connecting sensors and actuators. It also has a CH340C chip for USB to serial conversion. #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #referenceDesign #simple-embedded #espressif #template #MAX3485 #RS485 #maximintegrated #reference-design

    Properties

    creativecommons.org/licenses/by/4.0/

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $3.00–$3.58

    Digi-Key

    $10.25–$19.97

    LCSC

    $6.17–$6.95

    Mouser

    $10.86

    Verical

    $3.86–$3.98

    Controls