@user59035 is this the board you are using ? http://www.14core.com/wp-content/uploads/2015/06/Node-MCU-Pin-Out-Diagram1.png
@MaBe started
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.
@user59035 is this the board you are using ?
http://www.14core.com/wp-content/uploads/2015/06/Node-MCU-Pin-Out-Diagram1.png