Interfacing with Arduino I2C LCD

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  1. - 27th February 2017, 05:35 #36
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    richard
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    Default Re: Interfacing with Arduino I2C LCD

    This is the init command from my working Arduino sketch "LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE)" all three jumpers are open A0:2.
    ok must be PCF8574A [addr range 0x38-0x3f]

    so $7e is sounding good for an address , one of those includes should work .

    another thought
    you did not specify osc speed you may need
    DEFINE I2C_SLOW 1
    Last edited by richard; - 27th February 2017 at 05:42.
    Warning I'm not a teacher
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