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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.
@DrAzzy
Oh crap, there's the digitalWriting to a bank of four of them at once. Which can be done with port expander, but not compatible with my soft-pin idea...
The HD44780 provides a straight-forward way to extend (and does almost all the work - I'd think it would be 5-10 minutes of work tops to get that side sorted out once we had a driver for the port expander.
mmm...
I'm going to start a new thread to focus on the port expander, since this is a matter we need to think carefully about; it requires some thought to make it maximally useful...