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V2EX

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发布4月14日2026/04/14 01:55
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Used with M0 to set operating mode, can be grounded if not used 7 RXD Input UART receive, connects to TXD pin of external MCU 8 TXD Output UART transmit, connects to RXD pin of external MCU 9 AUX Output Module operating status indicator, can be used to…