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+--- Thread: rs232 problem (/showthread.php?tid=6761)
RE: rs232 problem - admin - 10-04-2024
no, just weld the chip's pin, maybe don't have good contact.
RE: rs232 problem - alex989 - 10-24-2024
I have check the continuity of the pin and there is continuity from esp pin to serial chip and from serial chip to db9.
RE: rs232 problem - admin - 10-24-2024
Use electric ferrochrome to re-solder the pins of chip U14:SP3232