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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
No, I think it's probably wiring, or you're missing pullups (which would make it unreliable).
Also check the voltage on the 3.3v line - if you had a Pico rev 1.3 board and shorted it out then you might have damaged a diode on it, in which case it might not be able to provide enough power to light the lights and provide enough voltage to make the sensor work.