• Do you have I2C pullups?

    Yes there are 4.7KΩ pullups for SDA and SCL onboard.

    I'd seriously suggest that you try it out first with an Espruino Pico - just to remove the possibility that something (I2C or Graphics) on ESP8266 is broken

    This Code and more complex one is working with this OLED from adafruit without any problems, so I2C and Graphics is working excellent on ESPs with 1v85, but yes I will try this too.

    Testing with g.setContrast(number from 0..255)and {height:32} did no changes.

    Will try to skip this 74LVC1G245 for SDA and SCL because this device is not visible with i2cdetect on beaglebone


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