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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.
@Ollie
Just on the power thing, I've been running from USB via a USART adapter with a 100uF capacitor soldered between the VCC and GND (ESP8266-01) and have no issues - even when running a DS18B20 and 433Mhz radio from the same adapter. Nice big capacitor seems to be key - and I've read mounting as close to the ESP8266 as possible, is also a good idea