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My I2C address was 0x3F, and I appeared to have no problems but this: LiquidCrystal_I2C lcd(I2C_ADDR, En_pin, Rw_pin, Rs_pin, D4_pin, D5_pin, D6_pin, D7_pin); gave me the error that the integer provided by I2C_ADDR was not a valid argument, the first argument being 'int'. I don't know what to do.
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