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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.
@Kalus
Maybe there is an issue with the configurable bitrate of the HC-05. Some modules have
38400 bit/s as default and the Espruino expects 9600 bit/s at Serial1 for using it as console interface at startup. The bitrate of the HC-05 module could be changed by AT commands.