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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.
@Wilberforce
Are the 4,5 above the same - does it refer to gpio # or PIN number, or board label?
Perhaps try
NodeMCU:D4andNodeMCU:D5as these map the board labeling to pin numbering... http://www.espruino.com/Reference#l_NodeMCU_D0