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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.
@ClearMemory041063
Glad that you have found a solution.
I'm running a Windows 7 system with WebIDE.
I tried it at all levels of minification with no problem.
The only way I could get an error is if my phat fingers missed the shift key when typing the pins. b7 instead of B7. I usually run the Esprima (offline) minification.
I also tried the Serial stuff using the terminal program Putty with positive results.
Welcome to the Art of computer programming. It's art when variables won't and constants aren't :)