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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.
@Gordon
I'd definitely try some pullups - it might have just been on the edge of working with I2C1.
However it might be that your SSD1306 LCD has them built in anyway - worth a try though.
That's great about the PRs - thanks!