can you also try 'sudo hcitool scan'? if that one works and gives no error and lescan does not then maybe your bluetooth hardware does not support LE version of Bluetooth
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.
can you also try 'sudo hcitool scan'? if that one works and gives no error and lescan does not then maybe your bluetooth hardware does not support LE version of Bluetooth