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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.
@fdufnews
I must apologize.
I have retried and found that the problem is coming from a stupid breadboard (and its stupid user).
It is a bit old and some contacts are "sporadic". Trashed and replaced by a new one and all is working as expected.