10-20-2023, 12:32 PM
RS485:
RXD(A): GPIO32
TXD(B): GPIO33 (DOWN terminal in your photo)
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4G GSM Module / Extend serial port: (UP terminal in your photo)
RXD: GPIO13
TXD: GPIO15
RXD(A): GPIO32
TXD(B): GPIO33 (DOWN terminal in your photo)
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4G GSM Module / Extend serial port: (UP terminal in your photo)
RXD: GPIO13
TXD: GPIO15