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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.
@DamianMontero
AHHHHH!!!! Sheesh.
what you need is NodeMCU.D4
var LED = NodeMCU.D4; add that to the default blink script.
and this is the other BIG things. A new machine. (a 4th one) and ANOTHER usb cable.