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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.
@Rarder44
I cleaned the whole board but nothing, same problem.
doing some calculations and tests I found that a 150 ohm resistor between the button pin and 3.3v solves the problem (it means that the pin is "short" to gnd with around 400 ohm); the problem is that it consumes about 6/7 mAh... too much...
I'll try cleaning the board again and maybe reflowing the chip with a hot air gun...