>Another handy trick for products with 44780 type LCD
>modules -  if for example your product uses a 16x2 LCD,
>plug a 40x2 module in for testing and you instantly
>have 24x2 characters to output debug info, using all
>your existing display routines.

Great idea, except won't you need another pin for the second chip select? I
thought these have two 44780 devices on them to get the number of rows.

But still using a larger than required display is a great idea.

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