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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.
@Gustav
Thanks for your replies ! I did some investigation based on your answers and then it hit me.. I was driving the 3.3v side of the logic level shifter from Pin D25 with pinMode as 'input_pullup'.. bad idea. Moved it to normal 3.3 v pin. Now everything works smooth, first led works, dual strips.
Do you know why that was not working ?