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Strange, can you confirm the following things for me: That you are using the library in the first post of this forum and that you don't have any other versions of library installed? That you have tried the example sketch in the first post unaltered (apart from uncommenting the line with the correct...

I have just purchased an LCD 1602. I am having problems making it work. I have compiled and uploaded the sketch (the hello world one). It compiles ok and loads ok but the text does not show on the screen. I had the SRA/SCL from the LCD connected to A4 and A5 as mentioned in the sketch comments. The ...