USB to TTL Serial Adapter Module CH340G Downloader 3.3V 5V Converter Pro STC ISP
6,10 €
RX: TTL serial data receive pin. Install the CH340 driver, the serial port number will appear in the computer device manager, short the TX and RX pins with wires, open the serial port assistant on the computer and verify that the USB to TTL serial port board receives and sends data on its own.
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