Also look at the NodeMCU.XX pins: http://www.espruino.com/Reference#NodeMCU
NodeMCU.XX
They already contain the mapping info for you.
@Gordon 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.
Also look at the
NodeMCU.XX
pins: http://www.espruino.com/Reference#NodeMCUThey already contain the mapping info for you.