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Simple Arduino interface for 20x4 LCD display and 4x4 matrix keypad using I2C.

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ILogEverything/2004-display-4x4-keypad

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2004-display-4x4-keypad

Basic 2004 LCD and 4x4 Keypad sketch

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Simple Arduino interface for 20x4 LCD display and 4x4 matrix keypad using I2C.

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