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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@the1laz
I definitely swapped the ch340g pins a few times to be sure. Not sure if I swapped the pins on the pl2303hx, but both pins had the same voltage on when measured. All good for me now that I found one that works, but could be a bit harder to work out for someone who doesn't have a pile of random usb-uart modules lying around.