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+--- Thread: MT4 ESP32-S3 IO pins define (/showthread.php?tid=9607)
MT4 ESP32-S3 IO pins define - admin - 07-11-2026
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