External pullup, of course, connected.
I use hardware I2C-pins because I try hardware and software I2C. In both cases PCF8574 works, display is inits and cursor is shown.
I try without I2C delay and with it from 1 to 30.
Note! Without string "Display On" cursor is not shown. In all examples I don't see this string.
Mr. MWS! Code is very simple and Proteus design is in archive. Please, make it work. It will be more informative for me.
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