Hello, dl2man, I have a USDX of your v2.1 OLED screen version. I want to ask you a question about USB / TTL. There are five interfaces on the board: RXD, TXD, GND, DTR, RTs. Which interfaces correspond to the FT232RL module respectively? Please help me. Thank you. Because the picture could not be sent to the email, I sent it to the forum at the same time. Sorry.
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