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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.
@hansamann
I am also trying to make my pico work with the esp8266 right now. I get the errors above and after looking at the tutorial again I discovered CH_PD was not connected. I s this really not required for the pico ? The table cell is empty when using the pico, so many here would try not connecting CH_PD to 3.3V. Does it need to be connected?
BTW it does not fix it. ... Still cannot make the code example work.