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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.
@Gordon
Ahh, yes - check out the section
I typed save() but Espruino won't work (or stops working quickly) when powered from a computer (it only works from a USB power supply, battery, or the computer when the Web IDE is running)in Troubleshooting: http://www.espruino.com/TroubleshootingBasically Espruino can't tell if you've got an application running on your PC or not, and it decides not to lose any data you send down USB - so once a certain amount of info has been printed to the console it'll stop and wait for it to be read.
You could just do
console.log = function(){};to stop prints, or you can forcibly move the console elsewhere with (for example)Serial1.setConsole()