Involvement:General (knows how to use it) - Ownership:1 week to 1 month
Very good (when it works :P) product, you just have to go to arduino.cc to see the tutorial for liquidCrystal library but you have to get by for the keyborad (no library :/).
To connect it, just like the other said, do : liquidCrystal lcd(8, 9, 4, 5, 6, 7) without forgetting to include the library : #include <liquidCrystal.h>
I don' know why but at the begining, it won't work ... I can't see anything on it and suddenly it work !?! I won't understand because now it's ok. Don't look for a library, there aren't any up to date :/ for my own the backlight is too dark. just turn the potentiometer left and right and stop when white squares appears.
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