I'm trying to drive a 'bog standard' 16x2 LCD display with a nano - but I've swapped the pins around for my convenience and configured them with
The display doesn't work. If I rewire the pins as per the examples and use
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
it works fine.
Poking around with a scope I find that RS on ( my) pin D2 isn't being toggled - all the rest are.
I can toggle the pin 'by hand' with digitalWrite, so it's not a hardware problem.
Any bright ideas?