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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.
@Jean-Philippe_Rey
Pull-ups are not the problem, in this case. If this was the case, a timeout would occur on I2C (both if pull-ups are missing or if the slave did not respond) and would therefore be notified in the console