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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
Why are you using that old version of Espruino? Update to v84 (and to v85 when it comes out)
Might you have an ESP8266 with an old version of the code on it? In that case, you use a different module and baud rate as noted above.
Also - put a capacitor between Vcc and Gnd right next to the ESP8266, like 10-100uf range, preferably ceramic. I've had problems with ESP-01 boards like that resetting themselves without a cap on them...