i bought a cheap CH340G USB-to-TTL converter and am still having troubles getting it to work. in my scouring for solutions, i stumbled across a thread about USB-to-Serial converter and someone mentioned using a MAX3222 to make a USB-to-RS232 converter. then i remembered i actually have one of thos…

Can i use a USB-to-RS232 Serial converter to connect to Arduino ?

LarryD March 31, 2018, 3:42am 2

@ExpertGeezer

RS232 uses a different voltage than TTL.

You need USB to TTL

1 Like

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