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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.
@DrAzzy
I use a 1117-series 3.3v regulator (specifically the ZLDO series, since they've got the best specs of the 1117 clones - very low quiescent current, and lowish dropout). I would not try to use any regulator physically smaller than SOT-223 (TO-220 for throughole people is more than sufficient) - they inevitably can't dissipate the heat (that's probably why it worked at first for you - the reg was cold. Then you plugged it in, it started heating up, and shortly after, it started to go into thermal shutdown or folded back the output voltage until it started cooling down, and it stopped working) .
I've seen people try to use SOT-23 regs, and running off 5v, the one Gordon used on the pico can just barely handle an ESP8266 - but ESP32 is a little more demanding.