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MT4 ESP32-S3 IO pins define
#1
IIC Bus:

SDA:GPIO5
SCL:GPIO4

24C02 EPROM i2c address: 0x50

-----------------

Ethernet (W5500) I/O define:

clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41

interrupt_pin: GPIO2
reset_pin: GPIO1

--------------------
RS485:
RXD:GPIO7
TXD:GPIO6

Tuya module:
RXD:GPIO17
TXD:GPIO16

Tuya network button: Tuya module's P28
Tuya network LED: Tuya module's P16
--------------------
1-Wire-TEP1:GPIO18
1-Wire-TEP2:GPIO8

--------------------

433MHz RF receiver: GPIO38
IR receiver: GPIO15

DL(download) button: GPIO0
---------------------
Motor1:
IN1-1: GPIO39
IN1-2: GPIO46
PWM1: GPIO9

Motor2:
IN2-1: GPIO11
IN2-2: GPIO10
PWM2: GPIO12

Motor3:
IN3-1: GPIO13
IN3-2: GPIO47
PWM3: GPIO14

Motor4:
IN4-1: GPIO48
IN4-2: GPIO45
PWM4: GPIO21

   
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MT4 ESP32-S3 IO pins define - by admin - 07-11-2026, 02:09 AM

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