Do you think it was a firmware version change? I'm struggling to think what the issue could be.
I know the HD44780 sometimes gets upset if it's sent data too quickly, but honestly I doubt that's the issue here.
@Gordon started
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.
Do you think it was a firmware version change? I'm struggling to think what the issue could be.
I know the HD44780 sometimes gets upset if it's sent data too quickly, but honestly I doubt that's the issue here.