It could also be related to I2C interface speed? By default Espruino uses quite a low speed just to make it more likely for things to work. You could try specifying bitrate:100000 in I2c.setup?
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.
It could also be related to I2C interface speed? By default Espruino uses quite a low speed just to make it more likely for things to work. You could try specifying
bitrate:100000
in I2c.setup?