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serial rx/tx and rs485 A/B
#2
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
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serial rx/tx and rs485 A/B - by gsmstudio - 10-20-2023, 07:55 AM
RE: serial rx/tx and rs485 A/B - by admin - 10-20-2023, 12:32 PM

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