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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.
@MaBe
You should try one of these i2c device scanner to be sure about your wires and pullup resistors are ok. If the list does not show your device, start checking used pins and cable. Or maybe you are just using the wrong address ;-)